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A method and system for static strength analysis of structural parts based on cae

An analysis method and static strength technology, applied in the field of CAE-based static strength analysis method and system of structural parts, can solve problems such as easy to cause over-design

Active Publication Date: 2022-08-09
JIANGLING MOTORS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Based on this, the purpose of the present invention is to provide a CAE-based static strength analysis method and system for structural parts, which is used to solve the technical problem that the flywheel CAE analysis method in the prior art uses stress as the evaluation index, which is easy to cause over-design

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  • A method and system for static strength analysis of structural parts based on cae
  • A method and system for static strength analysis of structural parts based on cae
  • A method and system for static strength analysis of structural parts based on cae

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Embodiment 1

[0044] see figure 2 , which shows the CAE-based static strength analysis method for structural parts in the first embodiment of the present invention, and the method includes steps S101-S105:

[0045] S101. Obtain a finite element analysis model of the flywheel.

[0046] S102 , setting the contact relationship and constraint boundary of the flywheel based on the finite element analysis model, and performing static strength analysis on the flywheel under the burst speed test condition to obtain a stress analysis result. The stress analysis result includes the stress of each element and the relative stress gradient distribution.

[0047] As a specific example, a static strength analysis is performed using linear material parameters, including tensile strength, by applying a load to the flywheel and setting up an analysis step. Specifically, the applied loads include applying bolt pre-tightening force, fixing the length of bolts, and loading the entire model with centrifugal fo...

Embodiment 2

[0054] Please check image 3 , which is a CAE-based static strength analysis method for structural parts in the second embodiment of the present invention, and the method includes steps S201-S208:

[0055] S201, establishing a three-dimensional digital model according to the model parameters of the flywheel.

[0056] S202, establishing a finite element analysis model of the flywheel according to the three-dimensional numerical model.

[0057] A finite element analysis model of the flywheel is established. The finite element analysis model includes the flywheel body, ring gear, bolts and part of the rear end of the crankshaft.

[0058] S203, obtaining a finite element analysis model of the flywheel.

[0059] S204 , setting the contact relationship and constraint boundary of the flywheel based on the finite element analysis model, and performing static strength analysis on the flywheel under the burst speed test condition to obtain a stress analysis result. The stress analysis...

Embodiment 3

[0081] see Figure 5 , which is a CAE-based structural member static strength analysis system in the third embodiment of the present invention, and the system includes:

[0082] The acquisition module is used to acquire the finite element analysis model of the flywheel;

[0083] A static strength analysis module, setting the contact relationship and constraint boundary of the flywheel based on the finite element analysis model, and performing static strength analysis on the flywheel under the condition of a burst speed test to obtain a stress analysis result, the stress analysis result Including the stress and relative stress gradient distribution of each element;

[0084] The correction module is used for importing the stress analysis result into the fatigue analysis software, so as to perform static overload safety factor analysis on each unit of the flywheel, correct the material allowable limit according to the analysis result, and according to the corrected material allo...

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Abstract

The invention provides a method and system for static strength analysis of structural parts based on CAE. The method includes: acquiring a finite element analysis model of a flywheel, setting a contact relationship and a constraint boundary of the flywheel, and performing static strength analysis on the flywheel to obtain a stress analysis result. The analysis results include the stress of each element; the stress analysis results are imported into the fatigue analysis software to analyze the static overload safety factor of each element of the flywheel, and the allowable limit of the material is corrected according to the analysis results to obtain the static overload safety factor; determine the static overload safety factor Whether the overload safety factor is not less than the preset threshold; if so, the flywheel strength meets the strength design requirements. The above-mentioned static strength analysis method of structural parts based on CAE, and the static overload safety factor of each flywheel unit is used to evaluate whether it can pass the burst speed test, which avoids the problem that the traditional flywheel CAE analysis method uses stress as the evaluation index, which is easy to over-design.

Description

technical field [0001] The invention relates to the technical field of engine static strength analysis, in particular to a method and system for static strength analysis of structural parts based on CAE. Background technique [0002] Strong vibration occurs when the engine is running, so each component must have sufficient strength. Static strength analysis studies the ability of a structure to withstand loads under normal temperature conditions, often referred to as strength analysis. In addition to the study of bearing capacity, static strength also includes the ability of the structure to resist deformation (stiffness) and the response (stress distribution, deformation shape, buckling mode, etc.) characteristics of the structure under load. [0003] As a disc-shaped part with a large rotational inertia, the engine flywheel acts like an energy storage, and its main function is to store the energy and inertia outside the engine's power stroke. At the power output end of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/23G06T17/20G06F119/04G06F119/14
CPCG06F30/23G06T17/20G06F2119/14G06F2119/04Y02T90/00
Inventor 徐颖韬袁晓军曾小春骆旭薇王功成左跃
Owner JIANGLING MOTORS