55 results about "Plate element" patented technology

The invention discloses a high-order and low-order mixed inverse finite element deformation reconstruction method based on distributed strain, and belongs to the technical field of finite element deformation reconstruction, and the method comprises the steps: constructing a high-order shell unit in combination with a planar film unit and a plate bending unit; and constructing a high-order inverse shell unit of a complex continuous strain area, constructing a step type inverse shell unit of a cross rib / rib area, and performing boundary transition processing to complete deformation reconstruction. According to the method, the inverse shell unit is constructed in combination with the diaphragm plate unit, and the ribs and discontinuous areas are emphatically processed, so that inverse finite element deformation reconstruction is effectively realized; the boundary is subjected to transition processing, so that the efficiency of inverse finite element deformation reconstruction is improved; and technical support is provided for safety evaluation, failure prevention and control, performance control and even optimization design of the aviation composite material structure.

The invention discloses a local damage identification method for a 32-meter simply-supported box girder, and relates to the technical field of bridge health monitoring. The method comprises the following steps: establishing a train-rail-bridge multi-body dynamic model, extracting strain response of each key section of a bridge as a data set for algorithm verification, dividing the key sections into different plate element components based on a plate element analysis method, converting train-induced strain signals into wavelet time-frequency diagrams through wavelet transform, and calculating the train-rail-bridge multi-body dynamic model. The sum of wavelet coefficients in the time-frequency graph is used as potential indexes of damage characteristics, an optimal frequency interval is selected by using a particle swarm algorithm, and the sum of the wavelet coefficients in the optimal frequency interval is not sensitive to passing vehicles under different baseline working conditions and is only sensitive to the damage size of the bridge; and the damage is identified and quantified by comparing whether the damage index exceeds the confidence boundary of the baseline working condition, so that the damage identification of different plate element components of the key section is realized.

The invention provides a layout design method for high-precision magnetron sputtering deposition equipment. The method comprises the following steps: firstly, determining sputtering deposition subsystem layout parameters such as revolution radius, target-base distance, target length and the like according to an optimized target difference value of a to-be-plated element parameter, a target preliminary sputtering yield parameter and a film thickness; then, whether the film thickness distribution under the layout parameters meets an optimization target difference value or not is evaluated; and finally, vacuum chamber subsystem layout parameters such as the diameter and the height of the vacuum chamber are calculated. According to the method, a quantitative design mode is adopted, the problems that existing magnetron sputtering deposition equipment layout design depends on experience, and whether the magnetron sputtering deposition equipment meets design index requirements or not is difficult to evaluate are effectively solved, and the scientificity and rationality of equipment layout are improved.

The invention relates to a method for precisely stacking panel elements into a stack, achieving the highest possible stacking speed while maintaining high placement accuracy and avoiding damage to the panel elements. This is achieved by intermittently feeding a sequence of individual panel elements (10) on a conveyor belt (11, 11') from at least one direction to a stacking device (13) up to a removal position immediately in front of the stacking device (13); gripping the panel element (10) in the removal position with a gripper (15; 15') located on a multi-axis gantry (16) and fixing the panel element (10) to the gripper (15, 15'), which is movable on the multi-axis gantry (16) in the XYZ direction and rotatable about its Z-axis at the phi angle;The gripper (15, 15') passes a camera (17) with the gripped plate element (10), determining the current deviation of the gripped plate element (10) from a target position in the XY direction as well as the current deviation of the phi angular position, and calculating the necessary corrective movements of the respective gripper (15, 15') in the XY direction and the phi angular position for the exact alignment of the gripped plate element (10) with respect to a target position; position correction of the gripped plate element (10) according to the calculated corrective movements during the further travel of the gripper (15, 15') and subsequent stacking of the plate element (10) in the stack (14) in the stacking device (13). (Fig.);

A plate-type heat exchanger and methods of construction and use wherein one or more separate, individual heat exchanging plate elements, through which a heat exchange fluid flows, are used which can (a) withstand pressure surge events, (b) allow the exchanger and the plate elements to be easily cleaned and maintained, and (c) allow the plate elements to be individually and separately removed from the exchanger for cleaning or maintenance while the exchanger remains online and while any other plate elements in the heat exchanger continue to operate.

The invention provides an acoustic scattering echo characteristic analysis and synthesis method for an underwater target substructure, and the method comprises the steps: S1, dividing an underwater model into substructures according to a preset rule, and forming substructure grid data in a surface element and point element format; s2, according to the grid data and the sound source orientation, calculating the target strength of an unshielded substructure through a plate element method; s3, calculating the shielded angle range of the substructure according to the grid data and the sound source orientation; s4, according to the shielded angle range of the substructure, the synthetic target strength of the substructure is calculated; and S5, target strength corresponding to the substructures is selected through a preset rule, the target strength is synthesized, and the overall target strength is formed. According to the method, a calculation method of the target strength of each substructure of a rigid target during synthesis is discussed through a synthesis theory and a plate element theory of the target strength, so that the contribution degree of each substructure of the target to the target strength of the whole structure is revealed.

The invention relates to the technical field of machining, in particular to a free-form surface machining track generation method based on conformal mapping, and the method comprises the steps: firstly, selecting and inputting a three-dimensional triangular mesh surface; then, a boundary priority expansion algorithm is used for expanding the two-dimensional parameter domain triangular mesh plane, so that the obtained two-dimensional parameter domain triangular mesh plane is rectangular, and deformation generated by mapping is minimum; in the next step, the shape of the triangular mesh plane of the two-dimensional parameter domain is deformed into the size of a design area; after a designer plans a two-dimensional processing track on a design area, namely a deformed two-dimensional parameter domain triangular mesh plane, the processing track is discretized into a plurality of processing track points, barycentric coordinates of the processing track points in corresponding triangular plate elements on the two-dimensional parameter domain triangular mesh plane are calculated, and finally the barycentric coordinates are inversely mapped to an input triangular mesh curved surface, so that the processing track points are obtained. And thus, an input three-dimensional processing track is obtained. According to the method, the defects in the prior art are overcome, and the corresponding space machining track can be generated on the three-dimensional curved surface in a self-adaptive mode.

The invention discloses an isogeometric transient dynamics topological optimization method and system of a functional gradient plate structure, and belongs to the field of topological optimization design of functional gradient structures. According to the method, the problems of collaborative optimization of the gradient direction in the gradient material plane and the multi-material structure topology under the transient load effect and the like are solved. According to the technical key points, an isogeometric transient dynamics finite element analysis model of the functional gradient plate structure is constructed based on a reduced Gaussian integral method; constructing a smooth projection scheme and a material interpolation scheme of design variables of the functional gradient plate structure, and providing a transient dynamic topological optimization model of the functional gradient plate structure by taking the density of a control point and the volume fraction of a strong material attached to a plate unit as the design variables and the minimization of dynamic flexibility as a target; constructing a time domain adjoint equation of the topological optimization model, and obtaining sensitivity information of the target function; and finally, obtaining the optimal anti-vibration design of the functional gradient plate structure convenient for engineering application. The device is used for structural light-weight vibration reduction design of large engineering equipment under the strong vibration working condition.

A parameterized driving modeling method, a modeling system, an electronic device and a storage medium. The parameterized driving modeling method comprises: obtaining basic parameters and specific parameters of a three-dimensional space model to be modeled, and creating a sub-component model of a plate element of the three-dimensional space model; wherein the basic parameters comprise the type / number, material, color and / or finishing information of the three-dimensional space model; the specific parameters comprise parameters in the three-dimensional space model for user adjustment; based on the obtained basic parameters and specific parameters, determining physical parameters and production parameters corresponding to all plate elements of the three-dimensional space model; and based on the obtained basic parameters, specific parameters and corresponding production parameters, generating modeling data of the three-dimensional space model. Through the embodiments provided in the present application, machining data is involved in plate modeling at the same time, so that complex machining data can be compatible during modeling, and the integration from cabinet body design to production is realized.

The invention provides an anti-deformation welding jig model for manufacturing an arc-shaped plate unit, which comprises a supporting platform, at least one group of first connecting hole sites arranged along the length direction of the supporting platform, and at least one group of second connecting hole sites arranged along the length direction of the supporting platform, the supporting assembly comprises a supporting plate, the supporting plate is correspondingly connected to one set of first connecting hole positions, the two ends of the supporting plate are correspondingly provided with at least one set of second connecting hole positions, and the side, away from the supporting platform, of the supporting plate is in a concave arc shape; the clamping and fixing mechanism is correspondingly connected to the hole positions of one group of second connecting holes; and the rotating mechanism is located at the bottom of the supporting platform. In the welding process of the arc-shaped plate unit, good supporting and restraining effects can be achieved, in the using process, the stopping gear can be adjusted according to different positions of plate ribs of the arc-shaped plate unit to be welded, the plate ribs to be welded are in the optimal welding state as much as possible, and therefore the welding seam forming quality and the welding seam size are guaranteed, and the welding quality is improved.

The invention relates to a plate element, in particular a bipolar plate element, for an electrochemical system, which may be, for example, a fuel cell system, wherein the plate element comprises: an operating fluid distribution structure on a first of the two main surfaces of the plate element, wherein the operating fluid distribution structure comprises at least one operating fluid distribution channel, and a flow disturbance structure on the first main surface of the plate element between the operating fluid distribution structure and an edge of the plate element.

The invention provides a wave glider high-frequency sound scattering characteristic forecasting method which comprises the following steps: dividing a wave glider into an overwater floating body ship, a connecting rod and an underwater tractor, obtaining three-dimensional geometric models of the overwater floating body ship, the connecting rod and the underwater tractor, and carrying out structure simplification; respectively establishing a grid model; the grid model is imported into Matlab, the scattering sound pressure of the grid model is obtained through a plate meta-algorithm, and then the target intensity is obtained; extracting target intensity distribution under different conditions to obtain sound scattering characteristics of the target intensity distribution; a simplified geometric model is constructed based on the actual shape of the wave glider, a high-quality triangular mesh is generated through surface discretization, and then target strength distribution under different conditions is obtained by adopting a plate element method.

The invention relates to a panel element (100), in particular for integration into a vehicle or piece of furniture (1), comprising a first surface layer (121), a second surface layer (122) and a core (110) arranged between the two surface layers (121, 122), wherein the panel element (100) comprises a first surface section (101), a second surface section (102) and a first cutout (151) arranged between them, wherein the first surface layer (121) and the inner core (110) are not present in the first cutout (151), wherein the panel element (100) is designed to be flexible so that it can be deformed from a first state in which the first surface section (101) is substantially parallel to the second surface section (102) to a second state in which the first surface section (101) is arranged at an angle (A1, A2, A3) to the second surface section (102).wherein in the second state the second cover layer (122) faces the inside or the outside of the angle (A1, A2, A3) and the plate element (100) is permanently attached in the second state.

The present invention relates to a corner reflector, a reflector and an intensity assessment method with an acoustic metasurface, wherein the metasurface is a narrow well acoustic metasurface with a specific gradient, and the corner reflector is a combination of multiple "concave" surfaces. The target intensity assessment method of this article, based on the existing plate element method, combines ray tracing theory to establish a plate element acoustic target intensity calculation model based on ray tracing theory, and develops a fast calculation method for "concave" surface targets of underwater corner reflectors based on improved plate elements. This method can calculate the scattered sound field of underwater corner reflectors, study their acoustic scattering characteristics, and carry out structural design technology of corner reflector groups, echo field reconstruction technology based on spatial strong scattering target characteristics, passive interference and simulation body confrontation effect assessment technology research based on corner reflectors, solve the basic problems of passive interference and simulation body design and application, and realize typical passive interference and model design.

A working device (112) for a construction machine (100) comprises a collecting element (124), a first side wall (132), a second side wall (134), and a plate element (136) coupled to the collecting element (124), the first side wall (132), and the second side wall (134). The collecting element (124), the first side wall (132), the second side wall (134), and the plate element (136) together define a cavity (142). Furthermore, at least one of the first side wall (132), the second side wall (134), and the plate element (136) defines an opening (144) that connects to the cavity (142). The working device (112) further comprises a sensor mounting system (150), comprising a cover (152, 252, 352, 452), a plurality of mechanical fastening elements (158) suitable for coupling the cover (152, 252, 352, 452) to the working device (112), and a sensor (164) mounted on the cover (152, 252, 352, 452).When the cover (152, 252, 352, 452) is coupled to the first side wall (132), the sensor (164) is partially accommodated within the cavity (142).

There is disclosed a method for forming grooves (10) in a board element (200). The method comprises arranging the board element in contact with a support member (120), and forming at least one groove (10) in a rear side (220) of the board element by removing material, such as chips, from the board element by a rotating cutting device (131) comprising a plurality of tooth elements configured to rotate around a rotational axis. The method further comprises counteracting, such as preventing, a displacement of the board element away from the support member during forming of the at least one groove, wherein the counteracting, such as preventing, comprises arranging at least a portion of the board element between an obstruction element (170) and the support member. The disclosure generally relates to methods and systems for forming groove(s) in a board element as well as to various panels comprising at least one groove.

The disclosure relates to a process for manufacturing a board element comprising at least one cavity (2) in a rear side thereof. The process comprises providing a substrate (3) comprising a thermoplastic material, wherein the substrate comprises a substrate portion (3a), and creating the at least one cavity in a rear side (3b) of the substrate by impressing the substrate portion by an impression device (10) comprising at least one protruding impression element (9), thereby obtaining the board element. The substrate portion is disposed at an elevated temperature (TS) of 40-295 °C when creating the at least one cavity. The process comprises creating at least one tapering cavity by means of at least one tapering impression element.

A guide device method for assembling a helical track device (TA) of a helical door operator system (S) comprising: first and second frame segments (12, 14) on opposite sides (I, II) of an opening (O); a door (20) arranged to move between an open position and a closed position; a first and a second projecting track member (100) extending along the first and second frame segments (12, 14) wherein the projecting track member (100) comprises a linear track (110) and a helical track (120), the frame segments (12, 14) comprising plate elements (300) for the helical track (120). The spiral door operator system also includes first and second sets of guide members (200) distributed along and attached to the door (20) and configured to guide engagement with the first and second protruding track members (100). The method comprises the steps of: providing (S1) a spiral slot (S300) on the plate element (300); and applying (S2) a track (120) to the spiral slot (S300) to connect the spiral track (120) to the plate element (300). The invention also relates to a spiral track arrangement (TA) and a spiral door operator system (S).

The application belongs to the technical field of aircraft thin-walled structure design, and particularly relates to a correction method of quadrilateral shell element in finite element analysis of aircraft thin-walled structure, which comprises the following steps: step one, establishing an element coordinate system for the quadrilateral shell element; step two, establishing a balance equation of a plane stress element related to in-plane deformation under the element coordinate system, and calculating a plane stress element stiffness matrix; step three, establishing a balance equation of a bending plate element related to out-of-plane deformation under the element coordinate system, and calculating a bending plate element stiffness matrix; step four, applying an in-plane rotation penalty term to the rotational stiffness of the quadrilateral shell element, calculating the influence of the in-plane rotation penalty term on the strain energy function of the quadrilateral shell element under the element coordinate system, and obtaining an in-plane rotation stiffness matrix; step five, calculating the stiffness matrix of the quadrilateral shell element under the element coordinate system; and step six, performing coordinate transformation to obtain the stiffness matrix of the quadrilateral shell element under the overall coordinate system.

The invention provides a framework model node optimization method and device. The method comprises the following steps: acquiring a to-be-optimized framework model; entity preprocessing is conducted on the frame model, entity elements are extracted, and the entity elements comprise plate elements, beam elements and column elements; performing node interference processing on the plate elements, the beam elements and the column elements according to preset element priorities to generate an initial optimization framework; the beam elements in the initial optimization frame are subjected to node interference processing, an optimized frame model is generated, a systematic and effective processing method can be provided for a frame structure model of metallurgical engineering, overlapped components are automatically processed in batches, the processing efficiency is improved, the frame precision is guaranteed, and the method is suitable for large-scale popularization and application. Therefore, a positive foundation is laid for later-stage concrete engineering quantity statistics.

A conductor rail ramp (1) for current collectors of electrically operated railways comprising at least one base profile (2), at least one sliding surface profile (3) and at least one fastening arrangement (7), wherein the base profile (2) has a profile foot (4), a profile head (5) and a profile web (6) connecting them, wherein the fastening arrangement (7) has at least one retaining element (9) and at least one fastening element (8), and wherein the retaining element (9) of the fastening arrangement (7) is materially bonded to the sliding surface profile (3) and the latter is connected to the base profile (2) via at least one fastening element (8), characterized in that at least one plate element (10, 11, 12) is arranged on the base profile (2) and that the free end (30) of the sliding surface profile (3) is spaced apart from the first plate element (10) via a cavity (14).

A lure 2, 100 comprises a plate element 6, 110 and a body 4, 104. The plate element 6, 110 has a line eyelet 58, 180 to which a line can be attached. The plate element 6, 110 is attached to the body 4, 104. The body has a limiting section 50. The limiting section 50 restricts the movement of the plate element 6, 110 relative to the body 4, 104.

The invention discloses a multi-base sonar detection underwater target sound scattering characteristic simulation system comprising a simulator group which comprises a plurality of simulators and is used for simulating underwater target sound scattering characteristics; the plurality of transducers are used for transmitting sound sources to the simulator group and receiving the sound sources; and the system control module is used for performing operation control and state data analysis on the simulator group and the transducer. The model of the underwater target is divided into a plurality of sub-regions, and the system control module constructs impulse response functions of the sub-regions by adopting a multi-base applicable plate element method, generates echo analog signals and transmits the echo analog signals to the analog transmitting transducers of the simulator group.

The present invention relates to a plate element with indirect heating as well as a system, module, reactor and method based on the plate element according to the invention.

Method for manufacturing a plate element (1), in particular a plate element for integration into a vehicle, especially a motorhome or ship, or a piece of furniture, comprising: Providing a sheet material (10) comprising a primary cover layer (11), a secondary cover layer (12) and a core material (15) comprising cavities (9), wherein the primary cover layer (11), the secondary cover layer (12) and the core material (15) are arranged one above the other along a stacking direction (S) and the core material (15) is arranged along the stacking direction (S) between the primary cover layer (11) and the secondary cover layer (12), wherein an insert (7) is embedded at a predetermined position in the sheet material (10).

The present invention belongs to the field of finite element simulation, and specifically relates to a structural preload simulation method for a two-dimensional model. The method comprises: selecting a straight stretch section in a two-dimensional model to which a preload is to be applied, deleting the plate element corresponding to the section, and the deleted plate element should be a regular rectangular unit; for each deleted plate element at the section, establishing a one-dimensional beam element at its axis position, and replacing the deleted plate element with the beam element; connecting and transitioning the two ends of the beam element to the plate element adjacent to the deleted plate element in the two-dimensional model; and applying a one-dimensional section preload on each beam element section.