A CAE simulation analysis method for building interior optimization

Abstract

This invention discloses a CAE simulation analysis method for building interior optimization. It relates to the field of CAE simulation technology and solves the problems of insufficient comprehensiveness and low accuracy in traditional simulation analysis processes. This invention generates a building model and intelligently calibrates load-bearing points of the same category, classifying the contact points of load-bearing components according to their stress characteristics. This achieves systematic management of load-bearing points in complex building structures, significantly improving the efficiency and specificity of stress analysis and avoiding the cumbersome nature of traditional single-point analysis. In the stress calculation stage, a comprehensive stress model is constructed by combining parameters such as cross-sectional area and moment of inertia, simultaneously verifying the variance of multiple sets of stress data. This ensures the accuracy of the coordinated analysis of axial and bending stresses and quantitatively assesses the stability of load-bearing sections through data dispersion, effectively identifying risk points of uneven stress distribution and providing a quantitative basis for structural safety.

Description

Technical Field

[0001] This invention relates to the field of CAE simulation technology, specifically a CAE simulation analysis method for building interior optimization. Background Technology

[0002] Computer-aided engineering (CAE), as an emerging discipline, has gradually become more accessible and has become an indispensable part of the new product design process in major enterprises. Traditional CAE technology refers to the analysis, calculation, and simulation in engineering design, specifically including engineering numerical analysis, structural and process optimization design, strength and life assessment, motion / dynamics simulation, and verification of the usability and reliability of future engineering / products.

[0003] In the field of building interior structure optimization, CAE simulation analysis, as a core technology for evaluating the safety and stability of load-bearing systems, has always been a key focus of the industry in terms of accuracy and efficiency.

[0004] Application CN108416129A discloses a prefabricated building integrated design method based on BIM and PDM, aiming to provide an efficient prefabricated building integrated design method based on BIM and PDM; it includes the following steps: Step (1): Install SECR software on the building design end computer with BIM software and the manufacturing design end computer with PDM software and connect them through a server; Step (2): Formulate coding rules for the components of each component family of the building into general parts, special parts and non-standard parts, and encode the general parts and special parts under each family one by one; Step (3): Perform three-dimensional design on the building design end computer or the manufacturing design end computer; Step (4): Define the materials and formulas of the components of the three-dimensional model on the manufacturing design end computer; Step (5): Perform structural calculations on the components based on the PKPM.STS software for building structure calculation and the mscnastran software for structural CAE analysis and calculation of mechanical products.

[0005] CAE simulation processing for building interiors typically only focuses on the strength or stress characteristics between corresponding structural points, without effectively analyzing the simulation situation under sudden events. The analysis process is not comprehensive enough and lacks accuracy, which can lead to subsequent collapses due to misalignment between structural points. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a CAE simulation analysis method for building interior optimization, which solves the problems of insufficient comprehensiveness and low accuracy in the original simulation analysis process.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a CAE simulation analysis method for building interior optimization, comprising the following steps:

[0008] Step 1: Based on the architectural drawings associated with the corresponding building, generate the architectural model associated with the corresponding building, then determine the different load-bearing points within the architectural model, and lock the load-bearing points of the same category based on the different load-bearing characteristics associated with the different load-bearing points.

[0009] The specific method for confirming the same category of key points is as follows:

[0010] Based on the generated building model, identify the relevant component models that belong to load-bearing components;

[0011] Next, confirm the contact points associated with the corresponding load-bearing components and other component models, mark the associated contact points as the load-bearing points of the corresponding load-bearing components, and record the different load-bearing points generated by the same type of load-bearing components and other component models in the same group as the same category of load-bearing points.

[0012] Step 2: Based on the identified load-bearing points of the same category, confirm the load-bearing characteristics associated with each load-bearing point, and extract the stress data of the corresponding load-bearing point from the confirmed load-bearing characteristics. Then, simultaneously verify the confirmed multiple sets of stress data to identify whether the load-bearing section meets the standards. The specific method for identification is as follows:

[0013] Confirm the load-bearing surface associated with the load-bearing point. If the load-bearing surface is circular, determine the cross-sectional area M(πr) of the current load-bearing surface based on the radius r of the circle. 2 If the load-bearing surface is a rectangle, the cross-sectional area M of the current load-bearing surface is determined based on the length and width of the rectangle. If the load-bearing surface is another type of polygon, the polygon segmentation method can be used to decompose the irregular polygon into triangles, and the area of ​​each basic shape can be calculated separately and then summed to obtain the total cross-sectional area M.

[0014] Next, confirm the moment of inertia associated with the load-bearing point: Define the height of the load-bearing component associated with the corresponding load-bearing point as H. If the load-bearing surface is rectangular, select the width b and height H of the rectangle to confirm the moment of inertia; its moment of inertia = bH. 3 ÷12; If the load-bearing surface is circular, and the radius of the circle is defined as r, the moment of inertia associated with the load-bearing surface is πr. 4 ÷4; If the load-bearing surface is triangular, then the longest side is chosen as b, and its moment of inertia = bH 3 ÷12; If the load-bearing surface is of other polygonal shape, the irregular polygon can be decomposed into triangles using the polygon segmentation method, and the moment of inertia of each triangle can be calculated separately and then summed to obtain the total moment of inertia J;

[0015] From the constructed building model, identify the uniformly distributed load q associated with the load-bearing components. q is a preset value. The axial force N is determined using: N = q × H, where H is the height of the corresponding load-bearing component. Then, the axial normal stress ZY associated with the corresponding load-bearing point is determined using: ZY = N ÷ M. Finally, (q × H) 2 )÷2=P to confirm the top bending moment P, and use: (P×y)÷J=WY to confirm the bending normal stress WY associated with the corresponding bearing point, where y is the distance of the bearing point from the neutral axis, which can be obtained directly from the building model. Then use: ZL=WY+ZY to lock the total stress ZL associated with the corresponding bearing point.

[0016] The total stress associated with other load-bearing points belonging to the same category is recorded sequentially, and the variance of the recorded total stresses ZL is processed to confirm the calibration variance Fc. If Fc≤Y1, it means that the analysis of the current load-bearing section meets the standard, and Y1 is a preset value. If Fc>Y1, it means that the analysis of the current load-bearing section does not meet the standard, and a signal with a large stress difference is directly generated for display.

[0017] Step 3: For the load-bearing sections that meet the analysis standards, perform dynamic verification on the building model. During the dynamic verification process, identify the stress change characteristics of the same category of load-bearing points, and confirm whether the dynamic verification of the same category of load-bearing points meets the standards based on the identified stress change characteristics. The specific method for confirmation is as follows:

[0018] Identify the built-in centerline of the building model, which can be directly identified from within the building model. Then, offset the building model at an angle based on this built-in centerline. Record the offset centerline as the offset centerline and the original built-in centerline as the built-in centerline. After the offset process is completed, the angle between the offset centerline and the built-in centerline is 30°. Record the initial position of the offset centerline during the offset process. Then, control the building model to rotate around the original built-in centerline while it is offset, and stop when the corresponding offset centerline rotates back to the initial position. This completes a set of offset rotation processes.

[0019] During the offset rotation process, the total stress ZL associated with each individual bearing point in the same category is monitored in real time. Based on the real-time monitoring process, the maximum and minimum total stresses are identified, and the stress difference CZ is determined based on the maximum and minimum total stresses. k Where k represents different bearing points, and the stress difference CZ of multiple different bearing points is calculated. k Variance processing is performed, the variance to be verified is locked, and the locked variance to be verified is compared with the preset value Y2, where Y2 is the preset value. If the variance to be verified is ≤ Y2, it means that the dynamic verification of the load-bearing section meets the standard; if the variance to be verified is > Y2, it means that the dynamic verification of the load-bearing section does not meet the standard.

[0020] The verification process for this part also includes further confirmation methods:

[0021] The specific method is as follows:

[0022] During the offset rotation process, the height status of each bearing point is monitored. Using the base surface of the building model as the reference plane, the height data of the corresponding bearing point is confirmed in real time during the rotation process, and the rotation stage when the corresponding bearing point height data is at its lowest state is recorded. Based on the different rotation stages confirmed for different bearing points, the total stress data associated with the corresponding bearing point at the corresponding rotation stage is confirmed. From the confirmed total stress data, the maximum and minimum total stresses are selected, and the stress difference CZ associated with the corresponding bearing point is confirmed from the selected maximum and minimum total stresses. k The system uses the same verification variance as described above to identify whether the corresponding load-bearing section meets the dynamic verification standard and generates relevant signals for display.

[0023] This invention provides a CAE simulation analysis method for optimizing building interiors. Compared with existing technologies, it has the following advantages:

[0024] This invention generates intelligent calibration of load-bearing points with the same classification through building model generation, classifies the contact points of load-bearing components according to their stress characteristics, realizes systematic management of load-bearing points of complex building structures, significantly improves the efficiency and pertinence of stress analysis, and avoids the cumbersomeness of traditional single-point analysis.

[0025] In the stress calculation stage, a comprehensive stress model is constructed by combining parameters such as cross-sectional area and moment of inertia. The variance of multiple sets of stress data is verified simultaneously. This not only ensures the accuracy of the coordinated analysis of axial stress and bending stress, but also quantitatively assesses the stability of the load-bearing section through the degree of data dispersion, effectively identifying risk points of uneven stress distribution, and providing a quantitative basis for structural safety.

[0026] The dynamic verification process incorporates a 30° tilt and rotation simulation of the building model, combined with monitoring of the load-bearing point height, to capture extreme data at the stage where stress characteristics are most significant. Compared to traditional static analysis, this approach more closely resembles the dynamic stress scenario of a building under actual loads (such as earthquakes and wind loads), thus improving the accuracy of the assessment of the structure's overturning resistance. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the method flow of the present invention. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figure 1 This application provides a CAE simulation analysis method for building interior optimization, including the following steps:

[0030] Step 1: Based on the architectural drawings associated with the corresponding building, generate the architectural model associated with the corresponding building (generating a 3D model of the corresponding building based on drawings is a common practice in existing technologies, so it will not be elaborated on here. For example, lock the corresponding feature points in each drawing and simultaneously confirm the length, width, and height features associated with the corresponding object features to generate a 3D model of the corresponding object. Then, based on the positional features and positional relationships between the corresponding 3D models in the corresponding drawings, generate the architectural model associated with the corresponding building). Then, determine the different load-bearing points in the architectural model. Based on the different load-bearing features associated with different load-bearing points, lock the same category of load-bearing points. Specifically, the load-bearing points are the contact points between different models. For example, the contact point between a load-bearing beam and the top is the corresponding load-bearing point. If the objects supported by the corresponding load-bearing points are the same both above and below, then the load-bearing points associated with the same objects belong to the same category of load-bearing points.

[0031] The specific method for confirming the same category of key points is as follows:

[0032] Based on the generated building model, identify the relevant component models that belong to the load-bearing components. After the relevant component models are generated, the relevant operators will mark the load-bearing components in advance.

[0033] Next, confirm the contact points associated with the corresponding load-bearing components and other component models, mark the associated contact points as the load-bearing points of the corresponding load-bearing components, and record the different load-bearing points generated by the same type of load-bearing components and other component models in the same group as the same category of load-bearing points.

[0034] For example: There are four support columns under the A component model. Each support column has a contact point with the A component model. The corresponding contact point is the corresponding load-bearing point. Therefore, the four contact points between the four support columns and the A component model are the same type of load-bearing points.

[0035] Step 2: Based on the identified load-bearing points of the same category, confirm the load-bearing characteristics associated with each load-bearing point, and extract the stress data of the corresponding load-bearing point from the confirmed load-bearing characteristics. Then, simultaneously verify the confirmed multiple sets of stress data to identify whether the load-bearing section meets the standards. The specific method for identification is as follows:

[0036] Confirm the load-bearing surface associated with the load-bearing point. If the load-bearing surface is circular, determine the cross-sectional area M(πr) of the current load-bearing surface based on the radius r of the circle. 2 If the load-bearing surface is a rectangle, the cross-sectional area M of the current load-bearing surface is determined based on the length and width of the rectangle. If the load-bearing surface is another type of polygon, the polygon segmentation method can be used to decompose the irregular polygon into triangles, and the area of ​​each basic shape can be calculated separately and then summed to obtain the total cross-sectional area M.

[0037] Next, confirm the moment of inertia associated with the load-bearing point: Define the height of the load-bearing component associated with the corresponding load-bearing point as H. If the load-bearing surface is rectangular, select the width b (the side with the smaller value) and height H of the rectangle to confirm the moment of inertia; its moment of inertia = bH. 3 ÷12; If the load-bearing surface is circular, and the radius of the circle is defined as r, the moment of inertia associated with the load-bearing surface is πr. 4 ÷4; If the load-bearing surface is triangular, then the longest side is chosen as b, and its moment of inertia = bH 3 ÷12; If the load-bearing surface is of other polygonal shape, the irregular polygon can be decomposed into triangles using the polygon segmentation method, and the moment of inertia of each triangle can be calculated separately and then summed to obtain the total moment of inertia J;

[0038] From the constructed building model, identify the uniformly distributed load q associated with the load-bearing components. q is a preset value, determined in advance by relevant operators based on the characteristics and parameters of the corresponding building materials. The axial force N is confirmed using: N = q × H, where H is the height of the corresponding load-bearing component. Then, the axial normal stress ZY associated with the corresponding load-bearing point is confirmed using: ZY = N ÷ M. Finally, (q × H) 2 )÷2=P to confirm the top bending moment P, and use: (P×y)÷J=WY to confirm the bending normal stress WY associated with the corresponding bearing point, where y is the distance of the bearing point from the neutral axis, which can be obtained directly from the building model. Then use: ZL=WY+ZY to lock the total stress ZL associated with the corresponding bearing point.

[0039] The total stress associated with other load-bearing points belonging to the same category is recorded sequentially, and the variance of the recorded total stresses ZL is processed to confirm the calibration variance Fc. If Fc≤Y1, it means that the analysis of the current load-bearing section meets the standard. Y1 is a preset value, and its specific value is determined by the operator based on experience. If Fc>Y1, it means that the analysis of the current load-bearing section does not meet the standard. In this case, a signal with a large difference in stress is directly generated for external personnel to view. When external personnel view a signal with a large difference in stress, parameter adjustment and verification are required to make the stress data associated with the corresponding load-bearing section meet the standard.

[0040] Furthermore, in the specific calculation and processing process, stress needs to be comprehensively confirmed by combining axial stress and bending stress. From the specific confirmed values, the corresponding total stress is locked, and the characteristics of similar load-bearing points are verified by combining the total stress to identify the numerical differences associated with similar characteristics, so as to achieve a better numerical evaluation and processing effect.

[0041] Step 3: For the load-bearing sections that meet the analysis standards, perform dynamic verification on the building model. During the dynamic verification process, identify the stress change characteristics of the same category of load-bearing points, and confirm whether the dynamic verification of the same category of load-bearing points meets the standards based on the identified stress change characteristics. The specific method for confirmation is as follows:

[0042] Identify the built-in centerline of the building model. This built-in centerline can be directly identified within the model and is a centerline inherent to the model. Offset the building model angularly based on this built-in centerline. Record the resulting offset centerline as the offset centerline, and the original built-in centerline as the original centerline. After the offset process, the angle between the offset centerline and the original centerline is 30°. Record the initial position of the offset centerline during the offset process. Then, control the building model to rotate around the original built-in centerline while offsetting, until it re-rotates to the corresponding offset centerline. Stop when it reaches the initial position, completing a set of offset rotation processes. Specifically, here the corresponding building model needs to be tilted by 30°. After tilting, the center line of the corresponding building model is the offset center line, and the original center line position is the built-in center line. When the building model is in the offset rotation process, the corresponding offset center line will rotate with the built-in center line, thus generating an offset rotation process. In the corresponding offset rotation process, the offset center line will complete a rotation process with an included angle of 30° around the built-in center line. That is to say, the corresponding building model will rotate by an angle.

[0043] During the offset rotation process, the total stress ZL associated with each individual bearing point in the same category is monitored in real time. Based on the real-time monitoring process, the maximum and minimum total stresses are identified, and the stress difference CZ is determined based on the maximum and minimum total stresses.k Where k represents different bearing points, and the stress difference CZ of multiple different bearing points is calculated. k Variance processing is performed, the variance to be verified is locked, and the locked variance to be verified is compared with the preset value Y2. Y2 is the preset value, and its specific value is determined by the operator based on experience. If the variance to be verified is ≤ Y2, it means that the dynamic verification of the load-bearing section meets the standard. If the variance to be verified is > Y2, it means that the dynamic verification of the load-bearing section does not meet the standard. A dynamic verification failure signal is directly generated and displayed. When external personnel see that there is a dynamic verification failure signal, the position of different load-bearing beams needs to be adjusted and verified again to stop the corresponding dynamic verification process when it meets the standard, so that the corresponding load-bearing section meets the standard in the subsequent dynamic verification process.

[0044] The verification process for this part also includes further confirmation methods:

[0045] The specific method is as follows:

[0046] During the offset rotation process, the height status of each bearing point is monitored. Using the base surface of the building model as the reference plane, the height data of the corresponding bearing point is confirmed in real time during the rotation process, and the rotation stage when the height data of the corresponding bearing point is at its lowest state is recorded (that is, among multiple bearing points, the height data of this bearing point is at its lowest value, and the corresponding duration is the corresponding rotation stage). Based on the different rotation stages confirmed for different bearing points, the total stress data associated with the corresponding bearing point in the corresponding rotation stage is confirmed. From the confirmed total stress data, the maximum and minimum total stresses are selected, and from the selected maximum and minimum total stresses, the stress difference CZ associated with the corresponding bearing point is confirmed. k The same verification variance is used to identify whether the corresponding load-bearing section meets the dynamic verification standard, and relevant signals are generated for display.

[0047] Specifically, compared to the above-mentioned processes, this processing method produces more accurate data, specifically stress data corresponding to the load-bearing point at its lowest value state. This lowest value state represents the stage where stress characteristics are most pronounced. Therefore, the stress difference associated with this stage is more accurate than the aforementioned stages in terms of precision.

[0048] Some of the data in the above formulas are numerical calculations with dimensions removed, and the contents not described in detail in this specification are all prior art known to those skilled in the art.

[0049] The above embodiments are only used to illustrate the technical methods of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical methods of the present invention without departing from the spirit and scope of the technical methods of the present invention.

Claims

1. A CAE simulation analysis method for building interior optimization, characterized in that, Includes the following steps: Step 1: Based on the architectural drawings associated with the corresponding building, generate the architectural model associated with the corresponding building, then determine the different load-bearing points within the architectural model, and lock the load-bearing points of the same category based on the different load-bearing characteristics associated with the different load-bearing points. Step 2: Based on the identified load-bearing points of the same category, confirm the load-bearing characteristics associated with each load-bearing point, and extract the stress data of the corresponding load-bearing point from the confirmed load-bearing characteristics. Then, simultaneously verify the confirmed multiple sets of stress data to identify whether the load-bearing section meets the standards. The specific method is as follows: Confirm the load-bearing surface associated with the load-bearing point. If the load-bearing surface is circular, determine the cross-sectional area M of the current load-bearing surface based on the radius r of the circle. If the load-bearing surface is rectangular, determine the cross-sectional area M of the current load-bearing surface based on the length and width of the rectangle. If the load-bearing surface is polygonal, use the polygon segmentation method to decompose the irregular polygon into triangles, calculate the area of ​​each basic shape, and sum them to obtain the total cross-sectional area M. Next, confirm the moment of inertia associated with the load-bearing point: Define the height of the load-bearing component associated with the corresponding load-bearing point as H. If the load-bearing surface is rectangular, select the width b and height H of the rectangle to confirm the moment of inertia; its moment of inertia = bH. 3 ÷12; If the load-bearing surface is circular, and the radius of the circle is defined as r, the moment of inertia associated with the load-bearing surface is =πr. 4 ÷4; If the load-bearing surface is triangular, then the longest side is chosen as b, and its moment of inertia = bH 3 ÷36; If the load-bearing surface is a polygon, the irregular polygon is decomposed into triangles using the polygon segmentation method, and the moment of inertia of each triangle is calculated separately and then summed to obtain the total moment of inertia J; From the constructed building model, identify the uniformly distributed load q associated with the load-bearing components. q is a preset value. The axial force N is determined using N = q × H, where H is the height of the corresponding load-bearing component. Then, the axial normal stress ZY associated with the corresponding load-bearing point is determined using ZY = N ÷ M. Finally, (q × H) 2 )÷2=P to confirm the top bending moment P, and use: (P×y)÷J=WY to confirm the bending normal stress WY associated with the corresponding bearing point, where y is the distance of the bearing point from the neutral axis. The parameters are obtained directly from the building model. Then use: ZL=WY+ZY to lock the total stress ZL associated with the corresponding bearing point. Record the total stress associated with other load-bearing points belonging to the same category in sequence, and process the variance of the recorded total stresses ZL to confirm the calibration variance Fc. If Fc≤Y1, it means that the analysis of the current load-bearing section meets the standard, and Y1 is the preset value. Step 3: For the load-bearing sections that meet the standards, perform dynamic verification on the building model. During the dynamic verification process, identify the stress change characteristics of the same category of load-bearing points, and confirm whether the dynamic verification of the same category of load-bearing points meets the standards based on the identified stress change characteristics.

2. The CAE simulation analysis method for building interior optimization according to claim 1, characterized in that, In step one, the specific method for confirming the same category of load-bearing points is as follows: Based on the generated building model, identify the relevant component models that belong to load-bearing components; Next, confirm the contact points associated with the corresponding load-bearing component and other component models, mark the associated contact points as the load-bearing points of the corresponding load-bearing component, and record the different load-bearing points generated by the same type of load-bearing component and other component models in the same group as the same category of load-bearing points.

3. The CAE simulation analysis method for building interior optimization according to claim 1, characterized in that, If Fc > Y1, it means that the current load-bearing section analysis is not up to standard, and a signal with a large stress gap will be generated directly for display.

4. The CAE simulation analysis method for building interior optimization according to claim 1, characterized in that, In step three, the specific method for confirming whether the dynamic verification of the same category's load-bearing capacity meets the standard is as follows: Identify the built-in centerline of the building model, which can be directly identified from within the building model. Then, offset the building model at an angle based on this built-in centerline. Record the offset centerline as the offset centerline and the original built-in centerline as the built-in centerline. After the offset process is completed, the angle between the offset centerline and the built-in centerline is 30°. Record the initial position of the offset centerline during the offset process. Then, control the building model to rotate around the original built-in centerline while it is offset, and stop when the corresponding offset centerline rotates back to the initial position. This completes a set of offset rotation processes. During the offset rotation process, the total stress ZL associated with each individual bearing point in the same category is monitored in real time. Based on the real-time monitoring process, the maximum and minimum total stresses are identified, and the stress difference CZ is determined based on the maximum and minimum total stresses. k Where k represents different bearing points, and the stress difference CZ of multiple different bearing points is calculated. k Variance processing is performed, the variance to be verified is locked, and the locked variance to be verified is compared with the preset value Y2, where Y2 is the preset value. If the variance to be verified is ≤ Y2, it means that the dynamic verification of the load-bearing section meets the standard.

5. The CAE simulation analysis method for building interior optimization according to claim 4, characterized in that, If the variance to be verified is greater than Y2, it means that the dynamic verification of the load-bearing section is not up to standard.

Images