Methods, systems, devices, and media for calculating internal forces of a design section of a wallboard member

Abstract

The present application relates to the field of nuclear island civil structure design, and particularly relates to a method, system, device and medium for calculating internal force of a design section of a wallboard component, which comprises: splitting the wallboard component into multiple entity units; dividing all the entity units into multiple entity unit sets according to the thickness of the wallboard component, and constructing a local coordinate system for each entity unit set; for each entity unit of the entity unit set: identifying its intersection line and determining its design section under the local coordinate system; obtaining the coordinates of a calculation point on the intersection line under a natural coordinate system; constructing an internal force calculation model of the entity unit based on the coordinates; calculating the stress of each calculation point based on the internal force calculation model of the entity unit; and calculating the internal force of the design section based on the stress of each calculation point. The present application avoids complex graphical element operations on each entity unit, simplifies the calculation process, improves the calculation efficiency, and can improve the engineering efficiency for processing a large number of entity units.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of nuclear island civil structure design, and particularly relates to a method, system, device and medium for calculating internal force of design section of wall plate component. BACKGROUND

[0002] The nuclear island civil structure is usually analyzed by using finite element software Ansys. For wall plate components that do not conform to the plate shell theory, such as thick walls, thick plates and prestressed containment structures that need to be analyzed in detail, solid elements are usually used for simulation, and the output is the stress of the element node. It is necessary to define the design section and "map" the stress of the element node to the design section to obtain the stress distribution of the defined design section, and finally the design internal force of the design section is obtained by integral operation. In order to ensure the safety of the design, the design safety of all positions of the wall and plate components needs to be evaluated. In the design, a line segment that penetrates the thickness of the wall and plate and intersects with the surface to form the shortest length is defined at the centroid of the boundary surface of each solid element corresponding to one surface of the wall plate component to represent the unit length design section in two mutually orthogonal directions at this position.

[0003] The above steps are all completed by using the function commands related to the operation of graphical elements of the finite element software Ansys, such as the Path command to define the starting point of the line segment, the Pdef command to "map" the stress of the element and node to each point on the line segment, and the Pcal command to integrate the stress distribution of the line segment into the internal force of the design section.

[0004] However, the existing method takes a long time to operate with graphical elements, which seriously affects the engineering efficiency when facing the calculation of design sections of tens of thousands of solid elements of nuclear island plant buildings. SUMMARY

[0005] To solve the above problems, the present application provides a method, system, device and medium for calculating internal force of design section of wall plate component.

[0006] The first aspect of the present application discloses a method for calculating internal force of design section of wall plate component based on Ansys, comprising:

[0007] Based on Ansys, the wall plate component is divided into a plurality of solid elements;

[0008] According to the thickness of the wall plate component, all the solid elements are divided into a plurality of solid element sets, and a local coordinate system is constructed for each solid element set;

[0009] For each solid element of the solid element set in the local coordinate system,

[0010] According to the shape of the solid element, the intersection line is identified;

[0011] determining a design section according to the intersection line;

[0012] obtaining coordinates of a preset calculation point on the intersection line in a natural coordinate system based on Ansys;

[0013] constructing an element internal force calculation model based on the coordinates of each calculation point in the natural coordinate system; wherein the element internal force calculation model describes an interpolation relationship between stress of the calculation point and stress of all nodes of the solid element in the local coordinate system;

[0014] calculating stress of each calculation point based on the element internal force calculation model;

[0015] calculating internal force of the design section based on stress of each calculation point.

[0016] Further, the step of dividing all the solid elements into a plurality of solid element sets according to the thickness of the wall panel member comprises:

[0017] dividing the solid elements in all the solid elements, which belong to a part of the same wall panel member with regular thickness change, into a solid element set.

[0018] Further, the step of identifying the intersection line according to the shape of the solid element comprises:

[0019] obtaining two surface sections of the solid element according to the shape of the solid element;

[0020] taking a centroid of any surface section as a starting point, calculating the shortest line segment of a straight line segment passing through the starting point and penetrating through two surface sections as an intersection line.

[0021] Further, the step of determining a design section according to the intersection line comprises:

[0022] determining a section parallel to the xy plane of the local coordinate system as a first design section based on Ansys according to the intersection line;

[0023] determining a section parallel to the yz plane of the local coordinate system as a second design section based on Ansys according to the intersection line.

[0024] Further, when the solid element is a hexahedron, the step of constructing an element internal force calculation model based on the coordinates of each calculation point in the natural coordinate system comprises:

[0025] obtaining specified type stress values of eight nodes of the hexahedron solid element in the local coordinate system and their coordinate values in the natural coordinate system;

[0026] The internal force calculation model of the unit is constructed according to the following formula:

[0027]

[0028]

[0029] wherein Stress I is the specified type stress value of node I in the local coordinate system, the coordinate value of node I in the natural coordinate system is (-1, 1, -1), Stress J is the specified type stress value of node J in the local coordinate system, the coordinate value of node J in the natural coordinate system is (-1, -1, -1), Stress K is the specified type stress value of node K in the local coordinate system, the coordinate value of node K in the natural coordinate system is (1, -1, -1), Stress L is the specified type stress value of node L in the local coordinate system, the coordinate value of node L in the natural coordinate system is (1, 1, -1), Stress M is the specified type stress value of node M in the local coordinate system, the coordinate value of node M in the natural coordinate system is (-1, 1, 1), Stress N is the specified type stress value of node N in the local coordinate system, the coordinate value of node N in the natural coordinate system is (-1, -1, 1), Stress O is the specified type stress value of node O in the local coordinate system, the coordinate value of node O in the natural coordinate system is (1, -1, 1), Stress P is the specified type stress value of node P in the local coordinate system, the coordinate value of node P in the natural coordinate system is (1, 1, 1), Stress is the specified type stress value of a specific calculation point in the local coordinate system, the coordinate value of the specific calculation point in the natural coordinate system is (r, s, t).

[0030] Further, based on the stress of each of the calculation points, the step of calculating the internal force of the design section comprises:

[0031] based on the stress of each of the calculation points, the axial force of the first design section and the second design section is calculated respectively;

[0032] based on the stress of each of the calculation points, the bending moment of the first design section and the second design section is calculated respectively;

[0033] based on the stress of each of the calculation points, the shear force of the first design section and the second design section is calculated respectively;

[0034] Based on the stress of each of the calculation points, the torsion of the first design section and the second design section is calculated respectively.

[0035] Further, the step of calculating the axial force of the first design section and the second design section based on the stress of each of the calculation points comprises:

[0036] The axial force N1 of the first design section in the normal direction is calculated according to the following formula:

[0037]

[0038] The axial force N2 of the second design section in the normal direction is calculated according to the following formula:

[0039]

[0040] Wherein, i represents the serial number of the calculation point, n+1 represents the number of the calculation points in one of the intersection lines, Stress_σ z,i represents the normal stress of the i-th calculation point in the z-axis direction of the local coordinate system, Stress_σ x,i represents the normal stress of the i-th calculation point in the x-axis direction of the local coordinate system, and Δs represents the straight line distance between two adjacent calculation points in the intersection line.

[0041] Further, the step of calculating the bending moment of the first design section and the second design section based on the stress of each of the calculation points comprises:

[0042] The bending moment M1 of the first design section around the x-axis of the local coordinate system is calculated according to the following formula:

[0043]

[0044] The bending moment M2 of the second design section around the z-axis of the local coordinate system is calculated according to the following formula:

[0045]

[0046] Wherein, i represents the serial number of the calculation point, n+1 represents the number of the calculation points in one of the intersection lines, Stress_σ z,i represents the normal stress of the i-th calculation point in the z-axis direction of the local coordinate system, Stress_σ x,i represents the normal stress of the i-th calculation point in the x-axis direction of the local coordinate system, and Δs represents the straight line distance between two adjacent calculation points in the intersection line, s i represents the straight line distance between the i-th calculation point and the first calculation point.

[0047] Further, the step of calculating the shear force of the first design section and the second design section respectively based on the stress of each of the calculation points comprises:

[0048] calculating a first shear force R1 of the first design section and a second shear force R2 of the second design section based on the stress of each of the calculation points, the first shear force R1 and the second shear force R2 being parallel to the x-axis in the local coordinate system xy plane;

[0049] calculating a third shear force Q1 of the first design section based on the stress of each of the calculation points, the third shear force Q1 being parallel to the y-axis in the local coordinate system xy plane;

[0050] calculating a fourth shear force Q2 of the second design section based on the stress of each of the calculation points, the fourth shear force Q2 being parallel to the y-axis in the local coordinate system yz plane.

[0051] Further, the step of calculating the first shear force R1 of the first design section and the second shear force R2 of the second design section based on the stress of each of the calculation points comprises:

[0052] The first shear force R1 of the first design section and the second shear force R2 of the second design section are calculated according to the following formula:

[0053]

[0054] wherein i represents the serial number of the calculation point, n+1 represents the number of the calculation points in one of the intersection lines, Stress_τ xz,i represents the shear stress of the i-th calculation point parallel to the z-axis direction in the local coordinate system xz plane, and Δs represents the straight line distance between two adjacent calculation points in the intersection line.

[0055] Further, the step of calculating the third shear force Q1 of the first design section based on the stress of each of the calculation points comprises:

[0056] The third shear force Q1 of the first design section is calculated according to the following formula:

[0057]

[0058] wherein i represents the serial number of the calculation point, n+1 represents the number of the calculation points in one of the intersection lines, Stress_τ yz,i represents the shear stress of the i-th calculation point parallel to the y-axis direction in the local coordinate system yz plane, and Δs represents the straight line distance between two adjacent calculation points in the intersection line.

[0059] Further, the step of calculating the fourth shear force Q2 of the second design section based on the stress of each calculation point comprises:

[0060] The fourth shear force Q2 of the second design section is calculated according to the following formula:

[0061]

[0062] Wherein, i represents the serial number of the calculation point, n+1 represents the number of the calculation points in one of the intersection lines, Stress_Tau_xz represents the shear stress of the i-th calculation point in the xz plane of the local coordinate system, and Δs represents the straight line distance between two adjacent calculation points in the intersection line. xy,i 12

[0063] Further, the step of calculating the torsion of the first design section and the second design section respectively based on the stress of each calculation point comprises:

[0064] The torsion M around the normal of the first design section or the second design section is calculated according to the following formula: 12

[0065]

[0066] Wherein, i represents the serial number of the calculation point, n+1 represents the number of the calculation points in one of the intersection lines, Stress_Tau_xz represents the shear stress of the i-th calculation point in the xz plane of the local coordinate system, and Δs represents the straight line distance between two adjacent calculation points in the intersection line. xz,i i

[0067] The second aspect of the present application discloses a system for calculating internal forces of design sections of a wallboard component based on Ansys, comprising:

[0068] A splitting module is configured to split the wallboard component into a plurality of entity units based on Ansys;

[0069] A first construction module is configured to divide all the entity units into a plurality of entity unit sets according to the thickness of the wallboard component, and to construct a local coordinate system for each entity unit set;

[0070] An identification module is configured to identify, for each entity unit of the entity unit set, an intersection line according to the shape of the entity unit in the local coordinate system;

[0071] A determination module is configured to determine a design section according to the intersection line; ​​​

[0072] Ansys, obtain coordinates of preset calculation points on the intersection line in a natural coordinate system;

[0073] A second construction module is configured to construct an element internal force calculation model based on the coordinates of each calculation point in the natural coordinate system, wherein the element internal force calculation model describes an interpolation relationship between stress of the calculation point and stress of all nodes of the physical element in the local coordinate system.

[0074] A first calculation module is configured to calculate stress of each calculation point based on the element internal force calculation model.

[0075] A second calculation module is configured to calculate internal force of the design section based on the stress of each calculation point.

[0076] The third aspect of the present application discloses an electronic device, comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to realize the steps of the internal force calculation method of the design section of the wallboard component based on Ansys.

[0077] The fourth aspect of the present application discloses a storage medium, wherein the storage medium stores a computer program, and the computer program is executed by a processor to realize the steps of the internal force calculation method of the design section of the wallboard component based on Ansys.

[0078] The present application defines an intersection line, selects a plurality of calculation points, then constructs an element internal force calculation model based on the coordinates of the calculation points in a natural coordinate system, calculates stress of each calculation point, and finally calculates internal force of the design section, thereby avoiding complex graphic element operations on each physical element, greatly simplifying the calculation process, and improving the calculation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0079] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0080] Figure 1 is a flowchart of the internal force calculation method of the design section of the wallboard component based on Ansys disclosed by the embodiments of the present application;

[0081] Figure 2 is a schematic diagram of an entity unit and its node disclosed by the embodiment of the present application;

[0082] Figure 3 is a schematic diagram of intersection lines, design sections and calculation points of a hexahedral entity unit disclosed by the embodiment of the present application;

[0083] Figure 4 is a schematic diagram of multiple calculation points on the intersection lines disclosed by the embodiment of the present application;

[0084] Figure 5 is a schematic diagram of various internal forces of the design section disclosed by the embodiment of the present application;

[0085] Figure 6 is a structural schematic diagram of an internal force calculation system of a design section of a wallboard component based on Ansys disclosed by the embodiment of the present application;

[0086] Figure 7 is a structural schematic diagram of an electronic device disclosed by the embodiment of the present application. DETAILED DESCRIPTION

[0087] In order to make the personnel in the technical field better understand the present application scheme, the technical scheme in the embodiment of the present application will be described clearly and completely below in combination with the drawings in the embodiment of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor are within the scope of protection of the present application.

[0088] The terms "first", "second", and the like in the specification and claims of the present application and the above-mentioned drawings are used to distinguish different objects, not to describe a specific order. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, device, or product that includes a series of steps or units is not limited to the listed steps or units, but can optionally include steps or units not listed, or can optionally include other steps or units inherent to the process, method, product or end.

[0089] In this document, the reference to "embodiment" means that the specific features, structures or characteristics described in connection with the embodiment can be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily mean the same embodiment, nor is it independent or alternative to other embodiments. The person skilled in the art explicitly and implicitly understands that the embodiments described herein can be combined with other embodiments.

[0090] The present application establishes an interpolation relationship of stress values of calculation points of intersection lines and node stress values of solid elements according to finite element basic theory, and solves the problem of low calculation efficiency caused by repeated definition of intersection lines when extracting internal forces of the defined design section under each load case. The node stress of the solid element is "mapped" to the calculation points of each intersection line by using the established interpolation relationship of stress values, avoiding the use of the Pdef and Pcal commands of the relatively low-efficiency finite element software Ansys related to graphical element operation, and further improving the calculation efficiency. The calculation time of 10 hours is shortened to less than 1 hour. The problem of low extraction efficiency of internal forces of the unit length design section of the wall plate component simulated by the finite element solid element is completely solved to meet the needs of the nuclear island civil structure design.

[0091] Please refer to Figure 1 , as shown in the figure. Figure 1 is a flowchart of a design section internal force calculation method of a wall plate component based on Ansys disclosed by an embodiment of the present application. As shown in the figure, Figure 1 the design section internal force calculation method of the wall plate component based on Ansys can include the following operations:

[0092] S101, based on Ansys, the wall plate component is divided into a plurality of solid elements;

[0093] Ansys is a general-purpose finite element analysis software, mainly used for finite element analysis and optimization design of physical fields such as structure, fluid, heat conduction, electromagnetic field, and acoustic field in engineering fields. Ansys can simulate various engineering problems in actual physical environment, such as stress analysis, thermal analysis, fluid analysis, etc. The wall plate component in this embodiment refers to the wall or floor in the nuclear island civil structure, and the division of the wall plate component into a plurality of solid elements is a key step of finite element analysis, which is called meshing or gridding. In Ansys, users can use the built-in meshing tool to mesh the model.

[0094] Figure 2 Three kinds of solid elements and their nodes are shown, the first one is a hexahedral solid element, which has I, J, K, L, M, N, O, and P eight nodes, and the hexahedral solid element is taken as an example in this embodiment. Figure 2 The second one is a prism solid element, which is regarded as a hexahedral solid element with K and L nodes coinciding and O and P nodes coinciding in engineering applications, Figure 2 and the third one is a tetrahedral solid element, which is regarded as a hexahedral solid element with K and L nodes coinciding and M, N, O, and P nodes coinciding in engineering applications.

[0095] S102、According to the thickness of the wallboard component, all the solid units are divided into a plurality of solid unit sets, and a local coordinate system is constructed for each solid unit set;

[0096] In an optional embodiment, the step of dividing all the solid units into a plurality of solid unit sets according to the thickness of the wallboard component comprises:

[0097] The solid units belonging to the part of the same wallboard component with regular changes in thickness are divided into a solid unit set.

[0098] In this optional embodiment, the regular change in thickness means that the thickness of the wallboard component can be expressed using a function, for example, the thickness changes linearly.

[0099] In this optional embodiment, the local coordinate system is an orthogonal coordinate system.

[0100] S103、For each solid unit of the solid unit set: in the local coordinate system, according to the shape of the solid unit, identify its intersection line;

[0101] In an optional embodiment, the step of identifying the intersection line according to the shape of the solid unit comprises:

[0102] According to the shape of the solid unit, obtain its two surface sections;

[0103] Take the centroid of any surface section as the starting point, calculate the shortest line segment among the line segments that pass through the starting point and penetrate the two surface sections as its intersection line.

[0104] In this optional embodiment, the centroid refers to the geometric center or average position point of the surface section, also known as the center of mass or gravity. The centroid of the solid unit can be determined by geometric methods or integral calculation.

[0105] The surface section refers to the surface of the solid unit exposed to the wall surface or the floor surface. Figure 3 Taking a hexahedral solid unit as an example, its intersection line is shown, one end of which penetrates the centroid of a surface section.

[0106] S104、According to the intersection line, determine its design section;

[0107] In an optional embodiment, the step of determining the design section according to the intersection line comprises:

[0108] Based on Ansys, determine the section parallel to the xy plane of the local coordinate system according to the intersection line as the first design section;

[0109] Based on Ansys, a cross section parallel to the yz plane of the local coordinate system is determined according to the intersection line as a second design section.

[0110] In this optional embodiment, the length of each design section is a preset unit length, which is 1 meter in this embodiment. The intersection line coincides with the center line of each design section, as shown in the leftmost side. Figure 3 The rightmost side.

[0111] S105, based on Ansys, obtaining the coordinates of the preset calculation points on the intersection line in the natural coordinate system;

[0112] The natural coordinate system is a widely used concept in finite element analysis. In the natural coordinate system, each node of an element (i.e., a solid element) is assigned one or more dimensional coordinates. These coordinates are usually chosen to be values between -1 and 1. In finite element analysis, the physical shape of each element is usually complex, while in the natural coordinate system, these elements are abstracted into simple shapes such as line segments, squares, cubes, etc. In this way, any point inside an element can be uniquely determined by the coordinates in the natural coordinate system. Then, by shape functions, these parameters can be associated with the stress values of the element nodes to obtain the stress values of the point, where the shape functions are the element internal force calculation model described in step S106.

[0113] In Ansys software, the coordinates of each calculation point in the natural coordinate system can be obtained by the moper function.

[0114] The calculation points are preset. In this embodiment, the intersection line is divided into n segments to obtain n+1 calculation points, as shown in Figure 4 The rightmost side. Figure 4 The intersection line on the middle shows the preset multiple calculation points.

[0115] S106, based on the coordinates of each calculation point in the natural coordinate system, constructing an element internal force calculation model; wherein the element internal force calculation model describes the interpolation relationship between the stress of the calculation point and the stress of all nodes of the solid element in the local coordinate system.

[0116] In an optional embodiment, when the solid element is a hexahedron, the step of constructing an element internal force calculation model based on the coordinates of each calculation point in the natural coordinate system includes:

[0117] Obtaining the specified type stress values of the eight nodes of the hexahedral solid element in the local coordinate system and their coordinates in the natural coordinate system;

[0118] The element internal force calculation model is constructed according to the following formula:

[0119]

[0120] wherein Stress I is the specified type stress value of node I in the local coordinate system, the coordinate value of node I in the natural coordinate system is (-1, 1, -1), Stress J is the specified type stress value of node J in the local coordinate system, the coordinate value of node J in the natural coordinate system is (-1, -1, -1), Stress K is the specified type stress value of node K in the local coordinate system, the coordinate value of node K in the natural coordinate system is (1, -1, -1), Stress L is the specified type stress value of node L in the local coordinate system, the coordinate value of node L in the natural coordinate system is (1, 1, -1), Stress M is the specified type stress value of node M in the local coordinate system, the coordinate value of node M in the natural coordinate system is (-1, 1, 1), Stress N is the specified type stress value of node N in the local coordinate system, the coordinate value of node N in the natural coordinate system is (-1, -1, 1), Stress o is the specified type stress value of node O in the local coordinate system, the coordinate value of node O in the natural coordinate system is (1, -1, 1), Stress P is the specified type stress value of node P in the local coordinate system, the coordinate value of node P in the natural coordinate system is (1, 1, 1), Stress is the specified type stress value of a specific calculation point in the local coordinate system, the coordinate value of the specific calculation point in the natural coordinate system is (r, s, t).

[0121] In this optional embodiment, the specified type stress value can be normal stress or shear stress. For other types of entity units, such as tetrahedrons, the principle is similar to that of hexahedrons, and those skilled in the art can construct a corresponding unit internal force calculation model according to the design idea of the unit internal force calculation model of the hexahedron without creative labor, and the present application will not be described in detail.

[0122] S107, calculating the stress of each calculation point based on the unit internal force calculation model;

[0123] S108, calculating the internal force of the design section based on the stress of each calculation point.

[0124] Figure 5 various internal force schematic diagrams of the design section are shown, Figure 5 σ z represents the normal stress in the z-axis direction of the local coordinate system, σx a normal stress in the x-axis direction of the local coordinate system, τ xz a shear stress in the z-axis direction on the xz-plane of the local coordinate system, τ xy a shear stress in the y-axis direction on the xy-plane of the local coordinate system, τ yz a shear stress in the y-axis direction on the yz-plane of the local coordinate system. N1 represents an axial force in the normal direction of the first design section, N2 represents an axial force in the normal direction of the second design section, M1 represents a bending moment of the first design section about the x-axis of the local coordinate system, M2 represents a bending moment of the second design section about the z-axis of the local coordinate system, R1 represents a first shear force of the first design section, R2 represents a second shear force of the second design section, Q1 represents a third shear force of the first design section, Q2 represents a fourth shear force of the second design section, M 12 a torsion moment of the normal of the first design section or the second design section.

[0125] In an optional embodiment, the step of calculating the internal forces of the design sections based on the stress of each of the calculation points comprises:

[0126] calculating the axial forces of the first design section and the second design section respectively based on the stress of each of the calculation points;

[0127] calculating the bending moments of the first design section and the second design section respectively based on the stress of each of the calculation points;

[0128] calculating the shear forces of the first design section and the second design section respectively based on the stress of each of the calculation points;

[0129] calculating the torsion moments of the first design section and the second design section respectively based on the stress of each of the calculation points.

[0130] In a further optional embodiment, the step of calculating the axial forces of the first design section and the second design section respectively based on the stress of each of the calculation points comprises:

[0131] calculating the axial force N1 in the normal direction of the first design section according to the following formula:

[0132]

[0133] calculating the axial force N2 in the normal direction of the second design section according to the following formula:

[0134]

[0135] wherein i represents the serial number of the calculation point, n+1 represents the number of the calculation points in one of the intersection lines, Stress_σ z,i represents the normal stress of the i-th calculation point in the z-axis direction of the local coordinate system, Stress_σ x,i represents the normal stress of the i-th calculation point in the x-axis direction of the local coordinate system, and Δs represents the straight-line distance between two adjacent calculation points in the intersection line.

[0136] In geometry, the normal line is a straight line perpendicular to a given curve or surface at a given point. In physics, such as stress analysis, the normal line refers to a straight line perpendicular to the surface of an object. The axial force refers to the force acting on the axis of the structure, which causes the structure to stretch or compress.

[0137] In an alternative embodiment, the step of calculating the bending moment of the first design section and the second design section based on the stress of each calculation point respectively comprises:

[0138] The bending moment M1 of the first design section around the x-axis of the local coordinate system is calculated according to the following formula:

[0139]

[0140] The bending moment M2 of the second design section around the z-axis of the local coordinate system is calculated according to the following formula:

[0141]

[0142] wherein i represents the serial number of the calculation point, n+1 represents the number of the calculation points in one of the intersection lines, Stress_σ z,i represents the normal stress of the i-th calculation point in the z-axis direction of the local coordinate system, Stress_σ x,i represents the normal stress of the i-th calculation point in the x-axis direction of the local coordinate system, and Δs represents the straight-line distance between two adjacent calculation points in the intersection line, s i represents the straight-line distance between the i-th calculation point and the first calculation point.

[0143] The bending moment refers to a moment acting on the structure, which causes the structure to bend. The size of the bending moment is equal to the product of the force and the arm.

[0144] In an alternative embodiment, the step of calculating the shear force of the first design section and the second design section based on the stress of each calculation point respectively comprises:

[0145] based on the stress of each of the calculation points, calculating a first shear force R1 of the first design section and a second shear force R2 of the second design section, the first shear force R1 and the second shear force R2 being parallel to the x-axis in the local coordinate system xy plane;

[0146] based on the stress of each of the calculation points, calculating a third shear force Q1 of the first design section, the third shear force Q1 being parallel to the y-axis in the local coordinate system xy plane;

[0147] based on the stress of each of the calculation points, calculating a fourth shear force Q2 of the second design section, the fourth shear force Q2 being parallel to the y-axis in the local coordinate system yz plane.

[0148] Shear force refers to the force acting on an object, causing the object to undergo shear deformation. The direction of the shear force is parallel to the cross section of the object.

[0149] In an optional embodiment, the step of calculating the first shear force R1 of the first design section and the second shear force R2 of the second design section based on the stress of each of the calculation points comprises:

[0150] The first shear force R1 of the first design section and the second shear force R2 of the second design section are calculated according to the following formula:

[0151]

[0152] where i represents the serial number of the calculation point, n+1 represents the number of calculation points in one of the intersection lines, Stress_τ xz,i represents the shear stress of the i-th calculation point in the local coordinate system xz plane parallel to the z-axis direction, and Δs represents the straight line distance between two adjacent calculation points in the intersection line.

[0153] Shear stress refers to the ratio of the shear force acting on a point on an object to the area where the point is located, with the unit being Pascal or Newton per square meter. Shear stress causes adjacent layers within an object to slide relative to each other.

[0154] In an optional embodiment, the step of calculating the third shear force Q1 of the first design section based on the stress of each of the calculation points comprises:

[0155] The third shear force Q1 of the first design section is calculated according to the following formula:

[0156]

[0157] where i represents the serial number of the calculation point, n+1 represents the number of calculation points in one of the intersection lines, Stress_τ yz,irepresents the shear stress of the i-th calculation point in the y-axis direction on the local coordinate system yz plane, and Δs represents the linear distance between two adjacent calculation points in the intersection line.

[0158] In an optional embodiment, the step of calculating the fourth shear force Q2 of the second design section based on the stress of each calculation point comprises:

[0159] The fourth shear force Q2 of the second design section is calculated according to the following formula:

[0160]

[0161] wherein i represents the serial number of the calculation point, n+1 represents the number of calculation points in the intersection line, Stress_τ xy,i represents the shear stress of the i-th calculation point in the y-axis direction on the local coordinate system yz plane, and Δs represents the linear distance between two adjacent calculation points in the intersection line.

[0162] In an optional embodiment, the step of calculating the torsion of the first design section and the second design section based on the stress of each calculation point comprises:

[0163] The torsion M 12 around the normal line of the first design section or the second design section is calculated according to the following formula:

[0164]

[0165] wherein i represents the serial number of the calculation point, n+1 represents the number of calculation points in the intersection line, Stress_ xz, represents the shear stress of the i-th calculation point in the z-axis direction on the local coordinate system xz plane, and Δs represents the linear distance between two adjacent calculation points in the intersection line, s i represents the linear distance between the i-th calculation point and the first calculation point.

[0166] Torsion, also known as moment, refers to the moment of force acting on an object to cause the object to rotate. The magnitude of the torsion is equal to the product of the force and the force arm, and the direction is perpendicular to the plane where the force and the force arm are located. In structural analysis, torsion is often used to analyze the torsional performance of shafts or rods.

[0167] Please refer to Figure 6 , Figure 6 is a structural schematic diagram of a wallboard component design section internal force calculation system based on Ansys disclosed by an embodiment of the present application, which comprises:

[0168] The splitting module 601 is configured to split the wallboard component into a plurality of entity units based on Ansys.

[0169] The first construction module 602 is configured to divide all the entity units into a plurality of entity unit sets according to the thickness of the wallboard component, and construct a local coordinate system for each entity unit set.

[0170] The identification module 603 is configured to identify, for each entity unit of the entity unit set, an intersection line of the entity unit according to the shape of the entity unit in the local coordinate system.

[0171] The determination module 604 is configured to determine a design section of the entity unit according to the intersection line.

[0172] The acquisition module 605 is configured to acquire coordinates of a preset calculation point on the intersection line in a natural coordinate system based on Ansys.

[0173] The second construction module 606 is configured to construct an intra-unit force calculation model based on the coordinates of each calculation point in the natural coordinate system, wherein the intra-unit force calculation model describes an interpolation relationship between a stress of the calculation point and stresses of all nodes of the entity unit in the local coordinate system.

[0174] The first calculation module 607 is configured to calculate the stress of each calculation point based on the intra-unit force calculation model.

[0175] The second calculation module 608 is configured to calculate an intra-force of the design section based on the stress of each calculation point.

[0176] It can be seen that the intra-force calculation system provided by the embodiment avoids complex graphic element operations on each entity unit, greatly simplifies the calculation process, and thus improves the calculation efficiency. For a large number of entity units, the engineering efficiency can be greatly improved.

[0177] For specific definitions of the intra-force calculation system of the design section of the wallboard component based on Ansys, refer to the definitions of the intra-force calculation method of the design section of the wallboard component based on Ansys in the foregoing, which will not be repeated here. Each module in the intra-force calculation system of the design section of the wallboard component based on Ansys can be realized by software, hardware, or a combination thereof. Each module can be embedded in or independent of the processor in the electronic device in hardware format, or stored in the memory in the electronic device in software format, so that the processor can call the operations corresponding to each module.

[0178] It should be noted that in order to highlight the innovative part of the present application, modules not closely related to solving the technical problems proposed by the present application are not introduced in this embodiment, but this does not mean that there are no other modules in this embodiment.

[0179] As Figure 7 The electronic device 1 provided by the present application can include a memory 12, a processor 13 and a bus, and can also include a computer program stored in the memory 12 and executable on the processor 13, such as an internal force calculation program of the design section of the wallboard component based on Ansys.

[0180] The memory 12 includes at least one type of readable storage medium, including flash memory, mobile hard disk, multimedia card, card-type memory (such as SD or DX memory, etc.), magnetic memory, disk, optical disk, etc. The memory 12 can be an internal storage unit of the electronic device 1 in some embodiments, such as the mobile hard disk of the electronic device 1. The memory 12 can also be an external storage device of the electronic device 1 in other embodiments, such as the plug-in mobile hard disk, smart media card (SMC), secure digital (SD) card, flash card, etc. equipped on the electronic device 1. Further, the memory 12 can include both the internal storage unit and the external storage device of the electronic device 1. The memory 12 can be used not only to store application software and various data installed on the electronic device 1, such as the code of the internal force calculation of the design section of the wallboard component based on Ansys, but also to temporarily store data that has been output or will be output.

[0181] The processor 13 can be composed of an integrated circuit in some embodiments, such as a single packaged integrated circuit, or a plurality of packaged integrated circuits with the same function or different functions, including one or more central processing units (CPU), microprocessors, digital processing chips, graphics processors and combinations of various control chips, etc. The processor 13 is the control unit of the electronic device 1, which connects all components of the electronic device 1 through various interfaces and lines, executes or runs the programs or modules stored in the memory 12 (such as the internal force calculation program of the design section of the wallboard component based on Ansys, etc.), and calls the data stored in the memory 12, to execute various functions of the electronic device 1 and process data.

[0182] The processor 13 executes the operating system of the electronic device 1 and various application programs installed. The processor 13 executes the application programs to implement the steps in the method for calculating internal force of a design section of a wall plate component based on Ansys described above.

[0183] For example, the computer program can be divided into one or more modules, which are stored in the memory 12 and executed by the processor 13 to complete the present application. The one or more modules can be a series of computer program instruction segments capable of completing a specific function, which are used to describe the execution process of the computer program in the electronic device 1. For example, the computer program can be divided into a splitting module 601, a first building module 602, an identifying module 603, a determining module 604, an obtaining module 605, a second building module 606, a first calculating module 607, and a second calculating module 608.

[0184] The integrated unit implemented in the form of the software function module described above can be stored in a computer readable storage medium, which can be nonvolatile or volatile. The software function module described above is stored in a storage medium, including a plurality of instructions for causing a computer device (which can be a personal computer, a computer device, or a network device, etc.) or a processor to execute part of the method for calculating internal force of a design section of a wall plate component based on Ansys described in various embodiments of the present application.

[0185] In one embodiment, a storage medium having a computer program stored thereon is provided, and the computer program is executed by a processor to also implement the steps implemented by the processor when executing the computer program as described above.

[0186] In summary, the method, system, device, and medium for calculating internal force of a design section of a wall plate component disclosed in the present application define intersection lines, select a plurality of calculation points, then construct a unit internal force calculation model based on the coordinates of the calculation points in the natural coordinate system, calculate the stress of each calculation point, and finally calculate the internal force of the design section. This avoids complex graphical element operations on each entity unit and greatly simplifies the calculation process, thereby improving the calculation efficiency. For the case of processing a large number of entity units, the engineering efficiency can be greatly improved. Therefore, the present application effectively overcomes the various shortcomings in the prior art and has a high industrial utilization value.

[0187] The above embodiments are only illustrative of the principles of the present application and its efficacy, and are not intended to limit the present application. Any modification or change made by any person skilled in the art without departing from the spirit and scope of the present application shall be covered by the claims of the present application.

Claims

1. A method for calculating internal forces of a design section of a wallboard member based on Ansys, characterized by, The method comprises: Based on Ansys, the wallboard component is divided into multiple entity units; All the entity units belonging to the part of the same wallboard component with regular thickness changes are divided into an entity unit set, and a local coordinate system is constructed for each entity unit set; For each entity unit of the entity unit set: in the local coordinate system, According to the shape of the entity unit, two surface sections are obtained; Taking the centroid of any surface section as the starting point, the shortest line segment of the straight line segment passing through the starting point and penetrating through the two surface sections is calculated as the intersection line; Based on Ansys, a cross section parallel to the xy plane of the local coordinate system is determined as the first design cross section according to the intersection line; Based on Ansys, a cross section parallel to the yz plane of the local coordinate system is determined as the second design cross section according to the intersection line; Based on Ansys, the coordinates of the preset calculation points on the intersection line in the natural coordinate system are obtained; Based on the coordinates of each calculation point in the natural coordinate system, an internal force calculation model of the unit is constructed; wherein the internal force calculation model of the unit describes the interpolation relationship between the stress of the calculation point and the stress of all nodes of the entity unit in the local coordinate system; Based on the stress of each calculation point, the internal force of the design cross section is calculated. When the entity unit is a hexahedron, based on the coordinates of each calculation point in the natural coordinate system, the step of constructing the internal force calculation model of the unit comprises:

2. The method of calculating internal forces of a design section of an Ansys-based wall panel member according to claim 1, wherein Obtaining the specified type stress values of the eight nodes of the hexahedron entity unit in the local coordinate system and their coordinate values in the natural coordinate system; Constructing the internal force calculation model of the unit according to the following formula: Based on the stress of each calculation point, the step of calculating the internal force of the design cross section comprises: wherein, is the specified type stress value of node in the local coordinate system, the coordinate value of node in the natural coordinate system is (-1, 1, -1), is the specified type stress value of node in the local coordinate system, the coordinate value of node in the natural coordinate system is (-1, -1, -1), is the specified type stress value of node in the local coordinate system, the coordinate value of node in the natural coordinate system is (1, -1, -1), is the specified type stress value of node in the local coordinate system, the coordinate value of node in the natural coordinate system is (1, 1, -1), is the specified type stress value of node in the local coordinate system, the coordinate value of node in the natural coordinate system is (-1, 1, 1), is the specified type stress value of node in the local coordinate system, the coordinate value of node in the natural coordinate system is (-1, -1, 1), is the specified type stress value of node in the local coordinate system, the coordinate value of node in the natural coordinate system is (1, -1, 1), is the specified type stress value of node in the local coordinate system, the coordinate value of node in the natural coordinate system is (1, 1, 1), is the specified type stress value of a specific calculation point in the local coordinate system, the coordinate value of the specific calculation point in the natural coordinate system is .

3. The method of calculating internal forces of a design section of an Ansys-based wall panel member according to claim 1, wherein Based on the stress of each calculation point, the axial force of the first design cross section and the second design cross section is calculated respectively; Based on the stress of each calculation point, the bending moment of the first design cross section and the second design cross section is calculated respectively; Based on the stress of each calculation point, the shear force of the first design cross section and the second design cross section is calculated respectively; Based on the stress of each calculation point, the torque of the first design cross section and the second design cross section is calculated respectively. The step of calculating the axial force of the first design cross section and the second design cross section based on the stress of each calculation point comprises:

4. The method of calculating internal forces of a design section of a wall panel member based on Ansys according to claim 3, wherein The step of calculating the bending moment of the first design cross section and the second design cross section based on the stress of each calculation point comprises: The axial force in the normal direction of the first design section is calculated according to the following formula : ； The axial force in the normal direction of the second design cross section is calculated according to the following formula : ； wherein, a serial number representing the calculation point, a number representing the calculation point in the intersection line, a normal stress of the calculation point in the z-axis direction of the local coordinate system, a normal stress of the calculation point in the x-axis direction of the local coordinate system, a normal stress of the calculation point in the x-axis direction of the local coordinate system, a normal stress of the calculation point in the x-axis direction of the local coordinate system, a straight-line distance between two adjacent calculation points in the intersection line.

5. The method of calculating internal forces of a design section of an Ansys-based wall panel member according to claim 3, wherein The step of calculating the shear force of the first design cross section and the second design cross section based on the stress of each calculation point comprises: The bending moment of the first design cross section around the x axis of the local coordinate system is calculated according to the following formula : ； The bending moment of the second design cross section around the z axis of the local coordinate system is calculated according to the following formula : ； wherein, a serial number representing the calculation point, a number representing the calculation points in the intersection line, a serial number representing the calculation point, a normal stress of the calculation point in the z-axis direction of the local coordinate system, a normal stress of the calculation point in the x-axis direction of the local coordinate system, a normal stress of the calculation point in the x-axis direction of the local coordinate system, a straight-line distance between two adjacent calculation points in the intersection line, a serial number representing the calculation point, a straight-line distance between the first calculation point and the calculation point.

6. The method of calculating internal forces of a design section of an Ansys-based wall panel member according to claim 3, wherein The step of calculating the torque of the first design cross section and the second design cross section based on the stress of each calculation point comprises: calculating a first shear force of the first design section and a second shear force of the second design section based on the stress of each of the calculation points and the second design section , the first shear force and the second shear force have a direction parallel to the x-axis in the local coordinate system xy plane. calculating a third shear force of the first design section based on the stress of each of the calculation points , the third shear force has a direction parallel to the y-axis on the local coordinate system xy plane. calculating a fourth shear force of the second design section based on a stress of each of the calculation points , the fourth shear force has a direction parallel to the y-axis on the local coordinate system yz plane.

7. The method of calculating internal forces of a design section of an Ansys-based wallboard member according to claim 6, wherein calculating a first shear force of the first design section and a second shear force of the second design section based on a stress of each of the calculation points and the steps of calculating a first shear force of the first design section and a second shear force of the second design section based on a stress of each of the calculation points A first shear force of the first design section is calculated according to the following formula and a second shear force of the second design section : ； wherein, a serial number representing the calculation point, a number representing the calculation point in the intersection line, a serial number representing the calculation point, a shear stress representing the calculation point in the xz plane of the local coordinate system parallel to the z-axis direction, a straight-line distance representing two adjacent calculation points in the intersection line.

8. The method of calculating internal forces of a design section of an Ansys-based wall panel member according to claim 6, wherein calculating a third shear force of the first design section based on a stress of each of the calculation points comprises: The third shear force of the first design section is calculated according to the following formula : ； wherein, a serial number representing the calculation point, a number representing the calculation point in the intersection line, a serial number representing the calculation point, a shear stress representing the calculation point in the y-axis direction on the yz plane of the local coordinate system, a straight-line distance representing two adjacent calculation points in the intersection line.

9. The method of calculating internal forces of a design section of an Ansys-based wallboard member according to claim 6, wherein, calculating a fourth shear force of the second design section based on a stress of each of the calculation points comprises: The fourth shear force of the second design section is calculated according to the following formula : ； wherein, a serial number representing the calculation point, a number representing the calculation points in the intersection line, a serial number representing the calculation point, a shear stress representing the calculation point in the local coordinate system xy parallel to the y-axis direction, a straight-line distance representing two adjacent calculation points in the intersection line.

10. The method of calculating internal forces of a design section of an Ansys-based wallboard member according to claim 3, wherein The internal force calculation system of the design cross section of the wallboard component based on Ansys in any of claims 1-10 comprises: The torque about the normal to the first design section or the second design section is calculated according to the following formula : ； wherein, a serial number representing the calculation point, a number representing the calculation point in the intersection line, a serial number representing the calculation point, a shear stress representing the calculation point parallel to the z-axis direction on the xz plane of the local coordinate system, a straight-line distance representing two adjacent calculation points in the intersection line, a serial number representing the calculation point, a straight-line distance representing the first calculation point from the first calculation point.

11. A system for calculating internal forces of a design section of a wallboard member based on Ansys, characterized by, ​ A splitting module is configured to split a wallboard component into a plurality of solid units based on Ansys; A first constructing module is configured to divide all the solid units into a plurality of solid unit sets according to the thickness of the wallboard component, and construct a local coordinate system for each solid unit set; A recognizing module is configured to, for each solid unit of the solid unit set, recognize its intersection line according to its shape in the local coordinate system; A determining module is configured to determine a design section according to the intersection line; An obtaining module is configured to obtain the coordinates of a preset calculation point on the intersection line in a natural coordinate system based on Ansys; A second constructing module is configured to construct an intra-unit force calculation model based on the coordinates of each calculation point in the natural coordinate system; wherein the intra-unit force calculation model describes the interpolation relationship between the stress of the calculation point and the stress of all nodes of the solid unit in the local coordinate system; A first calculating module is configured to calculate the stress of each calculation point based on the intra-unit force calculation model; A second calculating module is configured to calculate the intra-force of the design section based on the stress of each calculation point.

12. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, The processor executes the computer program to implement the steps of the method for calculating the intra-force of the design section of the wallboard component based on Ansys according to any one of claims 1 to 10.

13. A storage medium storing a computer program, characterized in that, The computer program is executed by the processor to implement the steps of the method for calculating the intra-force of the design section of the wallboard component based on Ansys according to any one of claims 1 to 10.

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