Verification method of finite element calculation results for component stress detection
A technology of calculation results and stress detection, which is applied in the field of verification of finite element calculation results, can solve the problems of low verification accuracy of model method and verification of finite element calculation results, etc., to achieve high verification completeness, high accuracy, scientific nature and The effect of accuracy
Active Publication Date: 2018-08-14
CHINA AVIATION POWER MACHINE INST
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[0008] The invention provides a method for verifying the finite element calculation results of component stress detection to solve the technical problem that the existing electrical measurement method cannot fully and completely verify the finite element calculation results and the verification accuracy of the model method is not high
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[0026] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0027] The preferred embodiment of the present invention provides a method for verifying the finite element calculation result of component stress detection, so as to ensure the scientificity and accuracy of the maximum stress position and maximum stress value of the component calculated by the finite element method. refer to figure 1 , the verification method of this embodiment includes:
[0028] Step S10, using a model method to verify the stress distribution trend of the component;
[0029] Step S20, judging whether the stress distribution trend of the component verified by the model method and the stress distribution trend of the finite element calculation result meet the preset condition...
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The invention discloses a verification method for a finite element calculating result of member stress detection. The method comprises that whether the stress distribution trend of the finite element calculating result of a member satisfies a preset condition is verified in a model method including static force photoelastic test and / or centrifugal load photoelastic test , and if yes, the next step is moved to; and quantitative accurate verification is carried out on a key point of the member in an electrometric method, and whether the finite element calculating result is correct is determined. Whether the stress distribution trend of the finite element calculating result of the member satisfies the preset condition is verified in the model method, and then quantitative accurate verification is carried out on the key point of the member in the electrometric method, so that the finite element calculating result is verified comprehensively, and the finite element calculating result at the key point is verified in the accurate and quantitative manner; and thus, verification of the finite element calculating result is complete and highly accurate, and the maximal stress portion and the maximal stress value of the member obtained by the finite element method are scientific and accurate.
Description
technical field [0001] The invention relates to the field of stress detection, in particular to a method for verifying finite element calculation results used for component stress detection. Background technique [0002] With the rapid development of Finite Element Method (FEM, Finte Element Method) technology, it plays an increasingly important role in strength analysis. However, whether the calculation results are correct or not needs to be verified by experiments, especially for newly designed key components with complex stresses, whether the calculated maximum stress locations and maximum stress values are correct is what designers are most concerned about. [0003] The existing commonly used verification method is the electrical measurement method. By pasting the strain gauge on the real test piece and comparing the measured results with the calculated results, this verification method is effective for general components, but for newly designed components, There are ...
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IPC IPC(8): G01L1/00
CPCG01L1/00
Inventor 郭天才梅庆张娟杨玲
Owner CHINA AVIATION POWER MACHINE INST