Rattan chair surface static load nondestructive testing method, rattan chair, device, equipment and medium
By constructing a finite element model of the rattan chair seat surface, simulating the deformation under static load conditions, solving the problems of sample failure, long period and high cost in traditional detection methods, and achieving efficient and accurate static load detection of the rattan chair seat surface surface , reduces R&D costs and improves R&D efficiency.
Patent Information
- Application Number
- CN202411229688.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2024-12-20
AI Technical Summary
The traditional rattan chair seat static load detection method has problems such as sample damage, long detection cycle and high cost.
By constructing a finite element model of the seat surface of the rattan chair, the material properties of the rattan material under specific conditions are obtained, the static load conditions in the use scenario are set, and the static analysis is carried out to form a digital inspection report, which avoids actual damage to the sample and provides high efficiency. Low-cost testing method.
Non-destructive testing has been realized, detection accuracy has been improved, costs have been reduced, R&D efficiency has been improved, and production enterprises have been helped to achieve quality control.
Smart Images
Figure CN119167700A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of furniture testing, and in particular to a method for nondestructive testing of static load on a rattan chair seat surface, a rattan chair, a device, a computer device and a storage medium. Background Art
[0002] Natural rattan chairs are popular among consumers for their unique texture and environmental protection, but the stability and comfort of their seats depend largely on the elasticity and toughness of rattan materials, as well as the reasonable amount of materials and rattan gap design. Traditional testing methods mostly rely on physical tests, such as static load tests. Although these methods can directly reflect the deformation of the seat surface, they have disadvantages such as sample damage, long testing cycle, and high cost. Summary of the invention
[0003] Based on this, a rattan chair seat static load nondestructive testing method, rattan chair, device, computer equipment and storage medium are provided to solve the technical problems of sample destruction, long testing cycle and high cost in static load testing of natural rattan chairs.
[0004] On the one hand, a method for nondestructive testing of static load of a rattan chair seat surface is provided, the method comprising: Construct a finite element model of the rattan chair seat; Obtaining material properties of rattan materials under specific conditions and inputting them into the finite element model; Setting usage scenarios for the rattan chair seat surface, setting static load conditions for each usage scenario, and simulating a static load loading process for the finite element model in each usage scenario; Performing static analysis on the finite element model to form a finite element analysis result; The finite element analysis results are organized into a digital test report and the digital test report is output.
[0005] In one embodiment, constructing a finite element model of a rattan chair seat surface includes: Get the structure of the rattan chair seat; Acquiring mechanical property parameters of the rattan material, wherein the mechanical property parameters of the rattan material include elastic modulus, Poisson's ratio and yield strength of the rattan material; Obtaining expected static load conditions, including load size, distribution, and action mode; According to the structure of the rattan chair seat surface, the mechanical performance parameters of the rattan material and the expected static load conditions, a finite element model of the rattan chair seat surface is constructed using computer-aided design software.
[0006] In one embodiment, the structure for obtaining the seat surface of the rattan chair includes: Meshing the structure of the seat surface of the rattan chair, wherein the meshing of the seat surface of the rattan chair generates more than or equal to 220,000 units and 340,000 nodes; the units include beam units and shell units; The rattan material of the rattan chair seat includes rattan strips; when the diameter of the rattan strips is less than 8 mm, the unit length is set at 1 / 20 of the rattan strip diameter; when the diameter of the rattan strips is between 8 mm and 15 mm, the unit length is set at 1 / 10 of the rattan strip diameter.
[0007] In one embodiment, obtaining material properties of rattan materials under specific conditions and inputting them into the finite element model includes: `Get the mechanical property parameter values of rattan materials under different temperature and humidity combination conditions; The mechanical performance parameters of rattan materials under different temperature and humidity combinations are numerically correlated to form material properties; The material properties are input into the finite element model to set the mechanical property parameter values of the rattan material under different temperature and humidity combination conditions.
[0008] In one embodiment, performing static analysis on the finite element model to form a finite element analysis result includes: Performing static analysis on the finite element model according to static load conditions, calculating deformation parameters of the rattan chair seat surface, and outputting parameter values of deformation and stress distribution of the rattan chair seat surface under static load; Judging whether the safety factor requirement is met according to the deformation amount and stress distribution parameter value of the seat surface of the rattan chair under the static load; If yes, it is determined that the seat surface of the rattan chair meets the static load condition; Otherwise, the rattan material quantity and the rattan material gap are optimized, and the finite element model is subjected to static analysis again according to the static load condition. If the safety factor requirement is still not met, it is determined that the rattan chair seat surface does not meet the static load condition.
[0009] In one embodiment, arranging the finite element analysis results into a digital test report and outputting the digital test report includes: When the rattan chair seat surface meets the static load condition, the structure of the rattan chair seat surface meeting the static load condition is obtained, and a static load condition meeting label is set for the rattan chair seat surface; When the rattan chair seat surface does not meet the static load condition, obtain the structure of the rattan chair seat surface with the smallest difference from the structure that meets the static load condition, and set a label of not meeting the static load condition for the rattan chair seat surface; Associating the static load condition with the structure of the rattan chair seat, the structure of the rattan chair seat including the amount of rattan material and the rattan material gap; The rattan material quantity and rattan material gap in the structure of the rattan chair seat are correspondingly associated with the static load condition satisfying label and the static load condition not satisfying label, and summarized into a digital inspection report, which includes a deformation graph, a stress distribution graph and optimization suggestions.
[0010] On the other hand, a rattan chair is provided, which is tested according to the static load nondestructive testing method for the rattan chair seat surface described above.
[0011] On the other hand, a nondestructive testing device for static load of a rattan chair seat surface is provided, the device comprising: Constructing a finite element model module, used to construct a finite element model of the rattan chair seat; A material property input module, used to obtain the material properties of rattan materials under specific conditions and input them into the finite element model; A static load simulation module is used to set the usage scenarios of the rattan chair seat surface, set static load conditions for each usage scenario, and simulate the static load loading process of the finite element model in each usage scenario; A finite element analysis module, used for performing static analysis on the finite element model to form a finite element analysis result; The test report generating module is used to organize the finite element analysis results into a digital test report and output the digital test report.
[0012] In another aspect, a computer device is provided, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the following steps are implemented: Construct a finite element model of the rattan chair seat; Obtaining material properties of rattan materials under specific conditions and inputting them into the finite element model; Setting usage scenarios for the rattan chair seat surface, setting static load conditions for each usage scenario, and simulating a static load loading process for the finite element model in each usage scenario; Performing static analysis on the finite element model to form a finite element analysis result; The finite element analysis results are organized into a digital test report and the digital test report is output.
[0013] In another aspect, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented: Construct a finite element model of the rattan chair seat; Obtaining material properties of rattan materials under specific conditions and inputting them into the finite element model; Setting usage scenarios for the rattan chair seat surface, setting static load conditions for each usage scenario, and simulating a static load loading process for the finite element model in each usage scenario; Performing static analysis on the finite element model to form a finite element analysis result; The finite element analysis results are organized into a digital test report and the digital test report is output.
[0014] The above-mentioned static load nondestructive testing method for rattan chair seat, rattan chair, device, computer equipment and storage medium construct a finite element model of the rattan chair seat to simulate the deformation under static load conditions, so as to obtain accurate deformation parameters without actually destroying the sample, provide an efficient and low-cost digital testing method, and provide a reference for optimizing the amount of rattan material and the rattan gap.
[0015] Compared with the prior art, the beneficial effects of the present application are as follows: Non-destructive testing: It avoids the damage to samples caused by traditional physical tests and protects the limited natural rattan resources. High precision: Finite element analysis can accurately simulate the deformation of rattan chair seats under static load conditions and provide reliable test data. Reduce costs: It reduces the number of samples and test equipment investment required for physical tests, and reduces the company's R&D costs. Improve efficiency: It quickly completes testing and optimizes design through digital means, shortens the R&D cycle, and improves R&D efficiency. Quality control: It helps manufacturers achieve quality control in the R&D stage and reduce adjustments and optimization work in later production. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.
[0017] Figure 1 This is a flow chart of a nondestructive testing method for static load of a rattan chair seat surface in one embodiment of the present application; Figure 2 A schematic flow chart of the steps of constructing a finite element model of a rattan chair seat in one embodiment of the present application; Figure 3 A schematic flow chart of the steps of obtaining the material properties of rattan materials under specific conditions and inputting them into the finite element model in one embodiment of the present application; Figure 4 A schematic flow chart of the steps of performing static analysis on the finite element model and forming finite element analysis results in one embodiment of the present application; Figure 5A schematic flow chart of the steps of collating the finite element analysis results into a digital test report and outputting the digital test report in one embodiment of the present application; Figure 6 This is a structural block diagram of a nondestructive testing device for static load of a rattan chair seat surface in one embodiment of the present application; Figure 7 This is a diagram of the internal structure of a computer device in one embodiment of the present application. DETAILED DESCRIPTION
[0018] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.
[0019] In one embodiment, Figure 1 As shown, a method for nondestructive testing of static load on a rattan chair seat surface is provided, comprising the following steps: Step S1, constructing a finite element model of the rattan chair seat; Step S2, obtaining material properties of rattan materials under specific conditions and inputting them into the finite element model; Step S3, setting usage scenarios of the rattan chair seat surface, setting static load conditions for each usage scenario, and simulating the static load loading process of the finite element model in each usage scenario; Step S4, performing static analysis on the finite element model to generate finite element analysis results; Step S5, collating the finite element analysis results into a digital test report and outputting the digital test report.
[0020] Among them, by constructing a finite element model of the rattan chair seat, the deformation under static load conditions is simulated, so that accurate deformation parameters can be obtained without actually destroying the sample, providing an efficient and low-cost digital detection method, and providing a reference for optimizing the amount of rattan materials and rattan gaps.
[0021] like Figure 2 As shown, in this embodiment, the finite element model of the rattan chair seat surface is constructed including: Step S11, obtaining the structure of the seat surface of the rattan chair; Step S12, obtaining mechanical property parameters of the rattan material, wherein the mechanical property parameters of the rattan material include elastic modulus, Poisson's ratio and yield strength of the rattan material; Step S13, obtaining expected static load conditions, wherein the static load conditions include load size, distribution and action mode; Step S14, constructing a finite element model of the rattan chair seat using computer-aided design software according to the structure of the rattan chair seat, the mechanical performance parameters of the rattan material, and the expected static load conditions.
[0022] In this embodiment, the structure for obtaining the seat surface of the rattan chair includes: Meshing the structure of the seat surface of the rattan chair, wherein the meshing of the seat surface of the rattan chair generates more than or equal to 220,000 units and 340,000 nodes; the units include beam units and shell units; The rattan material of the rattan chair seat includes rattan strips; when the diameter of the rattan strips is less than 8 mm, the unit length is set at 1 / 20 of the rattan strip diameter; when the diameter of the rattan strips is between 8 mm and 15 mm, the unit length is set at 1 / 10 of the rattan strip diameter.
[0023] Among them, for structures with complex shapes, they are discretized to generate a finite number of small blocks, which are called "units".
[0024] The assumed displacement pattern is usually in the form of a polynomial, and the displacement of any point in the element is expressed in terms of the displacements of the nodes as u = Nu e ; The transformation matrix N is called the shape function.
[0025] Combining the shape function and constitutive relation of the unit, we can get the "unit stiffness"; assembling the discrete units according to the overall node numbering rules, we can get the overall equation Ku=F; where K is the overall stiffness matrix and F is the load.
[0026] Since K is a singular matrix, sufficient displacement boundary equations need to be added in the static analysis to have a unique solution. The specific methods to solve the singularity of the stiffness matrix are: setting the main diagonal elements to "0", setting the main diagonal elements to "1" and setting large numbers.
[0027] After the displacement is solved, the stress and strain can be quickly obtained through the displacement results.
[0028] The process of finite element analysis is: finite element modeling, solution and post-processing.
[0029] The specific process of finite element analysis is as follows: When choosing the type of analysis unit, the unit shape should be reasonably selected according to the specific model and focus; Determine the shape function, which is generally linear or quadratic; Set material parameters and cross-section parameters corresponding to the generalized constitutive relations; Discretize, divide the unit, form the unit stiffness matrix, or directly establish the finite element model; add boundary conditions and loads to obtain the complete equation of overall statics or dynamics; Solve the equations, select the appropriate algorithm and corresponding solution control option parameters, and obtain the node displacement solution; After post-processing, the stress, strain, displacement, and constraint reaction force of the node or unit are obtained and visualized in the form of cloud diagrams or curves.
[0030] like Figure 3 As shown, in this embodiment, the method of obtaining the material properties of rattan materials under specific conditions and inputting them into the finite element model includes: Step S21, obtaining mechanical property parameter values of rattan materials under different temperature and humidity combination conditions; Step S22, correlating the mechanical performance parameter values of the rattan material under different temperature and humidity combination conditions to form material properties; Step S23, inputting the material properties into the finite element model, and setting the mechanical property parameter values of the rattan material under different temperature and humidity combination conditions.
[0031] The material properties and constraints are set according to the actual usage scenario, including the rattan density of 650kg / m 3 , Young's modulus 15892MPa, Poisson's ratio 0.45, safety factor (home use) 1.65, safety factor (commercial use) 2.53, static load 1300N.
[0032] like Figure 4 As shown, in this embodiment, the performing of static analysis on the finite element model to form a finite element analysis result includes: Step S41, performing static analysis on the finite element model according to the static load condition, calculating the deformation parameters of the rattan chair seat surface, and outputting the deformation and stress distribution parameter values of the rattan chair seat surface under the static load; Step S42, judging whether the safety factor requirement is met according to the deformation amount and stress distribution parameter value of the seat surface of the rattan chair under the static load; Step S43, if yes, it is determined that the seat surface of the rattan chair meets the static load condition; Step S44, if not, optimize the rattan material amount and rattan material gap, re-perform static analysis on the finite element model according to the static load condition, and if the safety factor requirement is still not met, determine that the rattan chair seat does not meet the static load condition.
[0033] In finite element analysis, improper unit settings can cause calculation errors, the most common of which are shear lock and hourglass effect. After processing, the error can be reduced from 70% to 50%, and then to 3%, becoming an acceptable large error.
[0034] like Figure 5As shown, in this embodiment, arranging the finite element analysis results into a digital test report and outputting the digital test report includes: Step S51, when the rattan chair seat surface meets the static load condition, obtaining the structure of the rattan chair seat surface that meets the static load condition, and setting a static load condition meeting label for the rattan chair seat surface; Step S52, when the rattan chair seat surface does not meet the static load condition, obtain the structure of the rattan chair seat surface with the smallest difference from the structure that meets the static load condition, and set a label of not meeting the static load condition for the rattan chair seat surface; Step S53, associating the static load condition with the structure of the rattan chair seat surface, wherein the structure of the rattan chair seat surface includes the amount of rattan material and the rattan material gap; Step S54, the rattan material amount and rattan material gap in the structure of the rattan chair seat are associated with the static load condition satisfying label and the static load condition not satisfying label, and a digital inspection report is summarized, wherein the digital inspection report includes a deformation graph, a stress distribution graph and optimization suggestions.
[0035] Among them, deformation charts, stress distribution diagrams, optimization suggestions and other contents are used to guide the design and production of manufacturing companies.
[0036] In the above-mentioned static load nondestructive testing method for the rattan chair seat, a finite element model of the rattan chair seat is constructed to simulate the deformation under static load conditions, so that accurate deformation parameters can be obtained without actually destroying the sample, providing an efficient and low-cost digital testing method, and providing a reference for optimizing the amount of rattan materials and rattan gaps.
[0037] Compared with the prior art, the beneficial effects of the present application are as follows: Non-destructive testing: It avoids the damage to samples caused by traditional physical tests and protects the limited natural rattan resources. High precision: Finite element analysis can accurately simulate the deformation of rattan chair seats under static load conditions and provide reliable test data. Reduce costs: It reduces the number of samples and test equipment investment required for physical tests, and reduces the company's R&D costs. Improve efficiency: It quickly completes testing and optimizes design through digital means, shortens the R&D cycle, and improves R&D efficiency. Quality control: It helps manufacturers achieve quality control in the R&D stage and reduce adjustments and optimization work in later production.
[0038] In this embodiment, a rattan chair is provided, and the rattan chair is tested according to the above-mentioned method for nondestructive testing of static load of a rattan chair seat surface.
[0039] The above-mentioned rattan chair constructs a finite element model of the rattan chair seat to simulate the deformation under static load conditions, so that accurate deformation parameters can be obtained without actually destroying the sample, providing an efficient and low-cost digital detection method, and providing a reference for optimizing the rattan material quantity and rattan gap of the rattan chair.
[0040] For the specific limitations on rattan chairs, please refer to the limitations on the static load non-destructive testing method for rattan chair seat surfaces mentioned above, which will not be repeated here.
[0041] In one embodiment, Figure 6 As shown, a nondestructive testing device 10 for static load of a rattan chair seat surface is provided, comprising: a finite element model building module 1, a material property input module 2, a static load simulation module 3, a finite element analysis module 4, and a test report generation module 5.
[0042] The finite element model building module 1 is used to build a finite element model of the rattan chair seat surface.
[0043] The material property input module 2 is used to obtain the material properties of rattan materials under specific conditions and input them into the finite element model.
[0044] The static load simulation module 3 is used to set the usage scenario of the rattan chair seat surface, set the static load condition for each usage scenario, and simulate the static load loading process of the finite element model in each usage scenario.
[0045] The finite element analysis module 4 is used to perform static analysis on the finite element model to generate finite element analysis results.
[0046] The test report generating module 5 is used to organize the finite element analysis results into a digital test report and output the digital test report.
[0047] In this embodiment, constructing the finite element model of the rattan chair seat surface includes: Get the structure of the rattan chair seat; Acquiring mechanical property parameters of the rattan material, wherein the mechanical property parameters of the rattan material include elastic modulus, Poisson's ratio and yield strength of the rattan material; Obtaining expected static load conditions, including load size, distribution, and action mode; According to the structure of the rattan chair seat surface, the mechanical performance parameters of the rattan material and the expected static load conditions, a finite element model of the rattan chair seat surface is constructed using computer-aided design software.
[0048] In this embodiment, the structure for obtaining the seat surface of the rattan chair includes: Meshing the structure of the seat surface of the rattan chair, wherein the meshing of the seat surface of the rattan chair generates more than or equal to 220,000 units and 340,000 nodes; the units include beam units and shell units; The rattan material of the rattan chair seat includes rattan strips; when the diameter of the rattan strips is less than 8 mm, the unit length is set at 1 / 20 of the rattan strip diameter; when the diameter of the rattan strips is between 8 mm and 15 mm, the unit length is set at 1 / 10 of the rattan strip diameter.
[0049] In this embodiment, the step of obtaining material properties of rattan materials under specific conditions and inputting the properties into the finite element model includes: `Get the mechanical property parameter values of rattan materials under different temperature and humidity combination conditions; The mechanical performance parameters of rattan materials under different temperature and humidity combinations are numerically correlated to form material properties; The material properties are input into the finite element model to set the mechanical property parameter values of the rattan material under different temperature and humidity combination conditions.
[0050] In this embodiment, the performing static analysis on the finite element model to form a finite element analysis result includes: Performing static analysis on the finite element model according to static load conditions, calculating deformation parameters of the rattan chair seat surface, and outputting parameter values of deformation and stress distribution of the rattan chair seat surface under static load; Judging whether the safety factor requirement is met according to the deformation amount and stress distribution parameter value of the seat surface of the rattan chair under the static load; If yes, it is determined that the seat surface of the rattan chair meets the static load condition; Otherwise, the rattan material quantity and the rattan material gap are optimized, and the finite element model is subjected to static analysis again according to the static load condition. If the safety factor requirement is still not met, it is determined that the rattan chair seat surface does not meet the static load condition.
[0051] In this embodiment, arranging the finite element analysis results into a digital test report and outputting the digital test report includes: When the rattan chair seat surface meets the static load condition, the structure of the rattan chair seat surface meeting the static load condition is obtained, and a static load condition meeting label is set for the rattan chair seat surface; When the rattan chair seat surface does not meet the static load condition, obtain the structure of the rattan chair seat surface with the smallest difference from the structure that meets the static load condition, and set a label of not meeting the static load condition for the rattan chair seat surface; Associating the static load condition with the structure of the rattan chair seat, the structure of the rattan chair seat including the amount of rattan material and the rattan material gap; The rattan material quantity and rattan material gap in the structure of the rattan chair seat are correspondingly associated with the static load condition satisfying label and the static load condition not satisfying label, and summarized into a digital inspection report, which includes a deformation graph, a stress distribution graph and optimization suggestions.
[0052] In the above-mentioned static load nondestructive testing device for the rattan chair seat, a finite element model of the rattan chair seat is constructed to simulate the deformation under static load conditions, so that accurate deformation parameters can be obtained without actually destroying the sample, providing an efficient and low-cost digital testing method, and providing a reference for optimizing the amount of rattan materials and rattan gaps.
[0053] For the specific definition of the nondestructive testing device for the static load of the rattan chair seat surface, please refer to the definition of the nondestructive testing method for the static load of the rattan chair seat surface in the above text, which will not be repeated here. Each module in the above-mentioned nondestructive testing device for the static load of the rattan chair seat surface can be implemented in whole or in part by software, hardware and their combination. The above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.
[0054] In one embodiment, a computer program product is provided, comprising a computer program, which, when executed by a processor, implements the following steps: Construct a finite element model of the rattan chair seat; Obtaining material properties of rattan materials under specific conditions and inputting them into the finite element model; Setting usage scenarios for the rattan chair seat surface, setting static load conditions for each usage scenario, and simulating a static load loading process for the finite element model in each usage scenario; Performing static analysis on the finite element model to form a finite element analysis result; The finite element analysis results are organized into a digital test report and the digital test report is output.
[0055] In one embodiment, the computer program further implements the following steps when executed by a processor: The finite element model for constructing the rattan chair seat surface comprises: Get the structure of the rattan chair seat; Acquiring mechanical property parameters of the rattan material, wherein the mechanical property parameters of the rattan material include elastic modulus, Poisson's ratio and yield strength of the rattan material; Obtaining expected static load conditions, including load size, distribution, and action mode; According to the structure of the rattan chair seat surface, the mechanical performance parameters of the rattan material and the expected static load conditions, a finite element model of the rattan chair seat surface is constructed using computer-aided design software.
[0056] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented: The structure for obtaining the seat surface of the rattan chair comprises: Meshing the structure of the seat surface of the rattan chair, wherein the meshing of the seat surface of the rattan chair generates more than or equal to 220,000 units and 340,000 nodes; the units include beam units and shell units; The rattan material of the rattan chair seat includes rattan strips; when the diameter of the rattan strips is less than 8 mm, the unit length is set at 1 / 20 of the rattan strip diameter; when the diameter of the rattan strips is between 8 mm and 15 mm, the unit length is set at 1 / 10 of the rattan strip diameter.
[0057] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented: The step of obtaining material properties of rattan materials under specific conditions and inputting the properties into the finite element model includes: `Get the mechanical property parameter values of rattan materials under different temperature and humidity combination conditions; The mechanical performance parameters of rattan materials under different temperature and humidity combinations are numerically correlated to form material properties; The material properties are input into the finite element model to set the mechanical property parameter values of the rattan material under different temperature and humidity combination conditions.
[0058] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented: The performing static analysis on the finite element model to form a finite element analysis result comprises: Performing static analysis on the finite element model according to static load conditions, calculating deformation parameters of the rattan chair seat surface, and outputting parameter values of deformation and stress distribution of the rattan chair seat surface under static load; Judging whether the safety factor requirement is met according to the deformation amount and stress distribution parameter value of the seat surface of the rattan chair under the static load; If yes, it is determined that the seat surface of the rattan chair meets the static load condition; Otherwise, the rattan material quantity and the rattan material gap are optimized, and the finite element model is subjected to static analysis again according to the static load condition. If the safety factor requirement is still not met, it is determined that the rattan chair seat surface does not meet the static load condition.
[0059] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented: Arranging the finite element analysis results into a digital test report and outputting the digital test report comprises: When the rattan chair seat surface meets the static load condition, the structure of the rattan chair seat surface meeting the static load condition is obtained, and a static load condition meeting label is set for the rattan chair seat surface; When the rattan chair seat surface does not meet the static load condition, obtain the structure of the rattan chair seat surface with the smallest difference from the structure that meets the static load condition, and set a label of not meeting the static load condition for the rattan chair seat surface; Associating the static load condition with the structure of the rattan chair seat, the structure of the rattan chair seat including the amount of rattan material and the rattan material gap; The rattan material quantity and rattan material gap in the structure of the rattan chair seat are correspondingly associated with the static load condition satisfying label and the static load condition not satisfying label, and summarized into a digital inspection report, which includes a deformation graph, a stress distribution graph and optimization suggestions.
[0060] For the specific limitations on the steps implemented when the computer program is executed by the processor, please refer to the above limitations on the method for non-destructive testing of static loads on the seat surface of a rattan chair, which will not be repeated here.
[0061] In one embodiment, a computer device is provided. The computer device may be a server, and its internal structure diagram may be as follows: Figure 7 As shown. The computer device includes a processor, a memory, a network interface and a database connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store non-destructive testing data of static loads on rattan chair seats. The network interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a method for non-destructive testing of static loads on rattan chair seats is implemented.
[0062] Those skilled in the art will understand that Figure 7 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.
[0063] In one embodiment, a computer device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the following steps when executing the computer program: Construct a finite element model of the rattan chair seat; Obtaining material properties of rattan materials under specific conditions and inputting them into the finite element model; Setting usage scenarios for the rattan chair seat surface, setting static load conditions for each usage scenario, and simulating a static load loading process for the finite element model in each usage scenario; Performing static analysis on the finite element model to form a finite element analysis result; The finite element analysis results are organized into a digital test report and the digital test report is output.
[0064] In one embodiment, when the processor executes the computer program, the processor further implements the following steps: The finite element model for constructing the rattan chair seat surface comprises: Get the structure of the rattan chair seat; Acquiring mechanical property parameters of the rattan material, wherein the mechanical property parameters of the rattan material include elastic modulus, Poisson's ratio and yield strength of the rattan material; Obtaining expected static load conditions, including load size, distribution, and action mode; According to the structure of the rattan chair seat surface, the mechanical performance parameters of the rattan material and the expected static load conditions, a finite element model of the rattan chair seat surface is constructed using computer-aided design software.
[0065] In one embodiment, when the processor executes the computer program, the processor further implements the following steps: The structure for obtaining the seat surface of the rattan chair comprises: Meshing the structure of the seat surface of the rattan chair, wherein the meshing of the seat surface of the rattan chair generates more than or equal to 220,000 units and 340,000 nodes; the units include beam units and shell units; The rattan material of the rattan chair seat includes rattan strips; when the diameter of the rattan strips is less than 8 mm, the unit length is set at 1 / 20 of the rattan strip diameter; when the diameter of the rattan strips is between 8 mm and 15 mm, the unit length is set at 1 / 10 of the rattan strip diameter.
[0066] In one embodiment, when the processor executes the computer program, the processor further implements the following steps: The step of obtaining material properties of rattan materials under specific conditions and inputting the properties into the finite element model includes: `Get the mechanical property parameter values of rattan materials under different temperature and humidity combination conditions; The mechanical performance parameters of rattan materials under different temperature and humidity combinations are numerically correlated to form material properties; The material properties are input into the finite element model to set the mechanical property parameter values of the rattan material under different temperature and humidity combination conditions.
[0067] In one embodiment, when the processor executes the computer program, the processor further implements the following steps: The performing static analysis on the finite element model to form a finite element analysis result comprises: Performing static analysis on the finite element model according to static load conditions, calculating deformation parameters of the rattan chair seat surface, and outputting parameter values of deformation and stress distribution of the rattan chair seat surface under static load; Judging whether the safety factor requirement is met according to the deformation amount and stress distribution parameter value of the seat surface of the rattan chair under the static load; If yes, it is determined that the seat surface of the rattan chair meets the static load condition; Otherwise, the rattan material quantity and the rattan material gap are optimized, and the finite element model is subjected to static analysis again according to the static load condition. If the safety factor requirement is still not met, it is determined that the rattan chair seat surface does not meet the static load condition.
[0068] In one embodiment, when the processor executes the computer program, the processor further implements the following steps: Arranging the finite element analysis results into a digital test report and outputting the digital test report comprises: When the rattan chair seat surface meets the static load condition, the structure of the rattan chair seat surface meeting the static load condition is obtained, and a static load condition meeting label is set for the rattan chair seat surface; When the rattan chair seat surface does not meet the static load condition, obtain the structure of the rattan chair seat surface with the smallest difference from the structure that meets the static load condition, and set a label of not meeting the static load condition for the rattan chair seat surface; Associating the static load condition with the structure of the rattan chair seat, the structure of the rattan chair seat including the amount of rattan material and the rattan material gap; The rattan material quantity and rattan material gap in the structure of the rattan chair seat are correspondingly associated with the static load condition satisfying label and the static load condition not satisfying label, and summarized into a digital inspection report, which includes a deformation graph, a stress distribution graph and optimization suggestions.
[0069] For the specific limitations on the steps implemented when the processor executes the computer program, please refer to the above-mentioned limitations on the method for non-destructive testing of static loads on the seat surface of a rattan chair, which will not be repeated here.
[0070] In one embodiment, a computer readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented: Construct a finite element model of the rattan chair seat; Obtaining material properties of rattan materials under specific conditions and inputting them into the finite element model; Setting usage scenarios for the rattan chair seat surface, setting static load conditions for each usage scenario, and simulating a static load loading process for the finite element model in each usage scenario; Performing static analysis on the finite element model to form a finite element analysis result; The finite element analysis results are organized into a digital test report and the digital test report is output.
[0071] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented: The finite element model for constructing the rattan chair seat surface comprises: Get the structure of the rattan chair seat; Acquiring mechanical property parameters of the rattan material, wherein the mechanical property parameters of the rattan material include elastic modulus, Poisson's ratio and yield strength of the rattan material; Obtaining expected static load conditions, including load size, distribution, and action mode; According to the structure of the rattan chair seat surface, the mechanical performance parameters of the rattan material and the expected static load conditions, a finite element model of the rattan chair seat surface is constructed using computer-aided design software.
[0072] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented: The structure for obtaining the seat surface of the rattan chair comprises: Meshing the structure of the seat surface of the rattan chair, wherein the meshing of the seat surface of the rattan chair generates more than or equal to 220,000 units and 340,000 nodes; the units include beam units and shell units; The rattan material of the rattan chair seat includes rattan strips; when the diameter of the rattan strips is less than 8 mm, the unit length is set at 1 / 20 of the rattan strip diameter; when the diameter of the rattan strips is between 8 mm and 15 mm, the unit length is set at 1 / 10 of the rattan strip diameter.
[0073] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented: The step of obtaining material properties of rattan materials under specific conditions and inputting the properties into the finite element model includes: `Get the mechanical property parameter values of rattan materials under different temperature and humidity combination conditions; The mechanical performance parameters of rattan materials under different temperature and humidity combinations are numerically correlated to form material properties; The material properties are input into the finite element model to set the mechanical property parameter values of the rattan material under different temperature and humidity combination conditions.
[0074] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented: The performing static analysis on the finite element model to form a finite element analysis result comprises: Performing static analysis on the finite element model according to static load conditions, calculating deformation parameters of the rattan chair seat surface, and outputting parameter values of deformation and stress distribution of the rattan chair seat surface under static load; Judging whether the safety factor requirement is met according to the deformation amount and stress distribution parameter value of the seat surface of the rattan chair under the static load; If yes, it is determined that the seat surface of the rattan chair meets the static load condition; Otherwise, the rattan material quantity and the rattan material gap are optimized, and the finite element model is subjected to static analysis again according to the static load condition. If the safety factor requirement is still not met, it is determined that the rattan chair seat surface does not meet the static load condition.
[0075] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented: Arranging the finite element analysis results into a digital test report and outputting the digital test report comprises: When the rattan chair seat surface meets the static load condition, the structure of the rattan chair seat surface meeting the static load condition is obtained, and a static load condition meeting label is set for the rattan chair seat surface; When the rattan chair seat surface does not meet the static load condition, obtain the structure of the rattan chair seat surface with the smallest difference from the structure that meets the static load condition, and set a label of not meeting the static load condition for the rattan chair seat surface; Associating the static load condition with the structure of the rattan chair seat, the structure of the rattan chair seat including the amount of rattan material and the rattan material gap; The rattan material quantity and rattan material gap in the structure of the rattan chair seat are correspondingly associated with the static load condition satisfying label and the static load condition not satisfying label, and summarized into a digital inspection report, which includes a deformation graph, a stress distribution graph and optimization suggestions.
[0076] For the specific limitations on the steps implemented when the computer program is executed by the processor, please refer to the above limitations on the method for non-destructive testing of static loads on the seat surface of a rattan chair, which will not be repeated here.
[0077] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application may include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.
[0078] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0079] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.
Claims
1. A nondestructive testing method for static load of rattan chair seat surface, characterized in that: include: Construct a finite element model of the rattan chair seat; Obtaining material properties of rattan materials under specific conditions and inputting them into the finite element model; Setting usage scenarios for the rattan chair seat surface, setting static load conditions for each usage scenario, and simulating a static load loading process for the finite element model in each usage scenario; Performing static analysis on the finite element model to form a finite element analysis result; The finite element analysis results are organized into a digital test report and the digital test report is output.
2. The method for nondestructive testing of static load of rattan chair seat surface according to claim 1, characterized in that: The finite element model for constructing the rattan chair seat surface comprises: Get the structure of the rattan chair seat; Acquiring mechanical property parameters of the rattan material, wherein the mechanical property parameters of the rattan material include elastic modulus, Poisson's ratio and yield strength of the rattan material; Obtaining expected static load conditions, including load size, distribution, and action mode; According to the structure of the rattan chair seat surface, the mechanical performance parameters of the rattan material and the expected static load conditions, a finite element model of the rattan chair seat surface is constructed using computer-aided design software.
3. The static load nondestructive testing method for rattan chair seat surface according to claim 2 is characterized in that: The structure for obtaining the seat surface of the rattan chair comprises: Meshing the structure of the seat surface of the rattan chair, wherein the meshing of the seat surface of the rattan chair generates more than or equal to 220,000 units and 340,000 nodes; the units include beam units and shell units; The rattan material of the rattan chair seat includes rattan strips; when the diameter of the rattan strips is less than 8 mm, the unit length is set at 1 / 20 of the rattan strip diameter; when the diameter of the rattan strips is between 8 mm and 15 mm, the unit length is set at 1 / 10 of the rattan strip diameter.
4. The static load nondestructive testing method for rattan chair seat surface according to claim 1 is characterized in that: The step of obtaining material properties of rattan materials under specific conditions and inputting the properties into the finite element model includes: Obtain the mechanical property parameter values of rattan materials under different temperature and humidity combination conditions; The mechanical performance parameters of rattan materials under different temperature and humidity combinations are numerically correlated to form material properties; The material properties are input into the finite element model to set the mechanical property parameter values of the rattan material under different temperature and humidity combination conditions.
5. The static load nondestructive testing method for rattan chair seat surface according to claim 1 is characterized in that: The performing static analysis on the finite element model to form a finite element analysis result comprises: Performing static analysis on the finite element model according to static load conditions, calculating deformation parameters of the rattan chair seat surface, and outputting parameter values of deformation and stress distribution of the rattan chair seat surface under static load; Judging whether the safety factor requirement is met according to the deformation amount and stress distribution parameter value of the seat surface of the rattan chair under the static load; If yes, it is determined that the seat surface of the rattan chair meets the static load condition; Otherwise, the rattan material quantity and the rattan material gap are optimized, and the finite element model is subjected to static analysis again according to the static load condition. If the safety factor requirement is still not met, it is determined that the rattan chair seat surface does not meet the static load condition.
6. The method for nondestructive testing of static load of rattan chair seat surface according to claim 5, characterized in that: Arranging the finite element analysis results into a digital test report and outputting the digital test report comprises: When the rattan chair seat surface meets the static load condition, the structure of the rattan chair seat surface meeting the static load condition is obtained, and a static load condition meeting label is set for the rattan chair seat surface; When the rattan chair seat surface does not meet the static load condition, obtain the structure of the rattan chair seat surface with the smallest difference from the structure that meets the static load condition, and set a label of not meeting the static load condition for the rattan chair seat surface; Associating the static load condition with the structure of the rattan chair seat, the structure of the rattan chair seat including the amount of rattan material and the rattan material gap; The rattan material quantity and rattan material gap in the structure of the rattan chair seat are correspondingly associated with the static load condition satisfying label and the static load condition not satisfying label, and summarized into a digital inspection report, which includes a deformation graph, a stress distribution graph and optimization suggestions.
7. A rattan chair, characterized in that: The rattan chair is tested according to the rattan chair seat static load nondestructive testing method according to any one of claims 1 to 6.
8. A nondestructive testing device for static load of rattan chair seat surface, characterized in that: The device comprises: Constructing a finite element model module, used to construct a finite element model of the rattan chair seat; A material property input module, used to obtain the material properties of rattan materials under specific conditions and input them into the finite element model; A static load simulation module is used to set the usage scenarios of the rattan chair seat surface, set static load conditions for each usage scenario, and simulate the static load loading process of the finite element model in each usage scenario; A finite element analysis module, used for performing static analysis on the finite element model to form a finite element analysis result; The test report generating module is used to organize the finite element analysis results into a digital test report and output the digital test report.
9. A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 6 are implemented.
10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.