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Structural member static strength analysis method and system based on CAE (Computer Aided Engineering)

An analysis method and static strength technology, which are applied in the field of static strength analysis methods and systems for structural parts based on CAE, and can solve problems such as over-design.

Active Publication Date: 2022-05-13
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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  • Structural member static strength analysis method and system based on CAE (Computer Aided Engineering)
  • Structural member static strength analysis method and system based on CAE (Computer Aided Engineering)
  • Structural member static strength analysis method and system based on CAE (Computer Aided Engineering)

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Embodiment 1

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

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

[0046] S102. Set the contact relationship and constraint boundary of the flywheel based on the finite element analysis model, and perform a static strength analysis on the flywheel under burst speed test conditions to obtain stress analysis results, including the stress and relative stress gradient distribution of each unit.

[0047] As a specific example, a flywheel is loaded and the analysis step is set to perform a static strength analysis using linear material parameters, including tensile strength. Specifically, the applied loads include applying bolt pretightening force, fixing the length of bolts, and loading the entire model with burst rotational speed centrifugal force.

[0048] The contact relationship includes t...

Embodiment 2

[0054] Please check image 3 , shows the CAE-based static strength analysis method of structural members in the second embodiment of the present invention, the method includes steps S201-S208:

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

[0056] S202. Establish a finite element analysis model of the flywheel according to the three-dimensional digital model.

[0057] The 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. Obtain a finite element analysis model of the flywheel.

[0059] S204. Set the contact relationship and constraint boundary of the flywheel based on the finite element analysis model, and perform a static strength analysis on the flywheel under burst speed test conditions to obtain stress analysis results, including the stress and relative stress g...

Embodiment 3

[0081] see Figure 5 , shows the CAE-based static strength analysis system for structural members in the third embodiment of the present invention, the system includes:

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

[0083] The static strength analysis module sets the contact relationship and constraint boundary of the flywheel based on the finite element analysis model, and performs static strength analysis on the flywheel under burst speed test conditions to obtain stress analysis results, and the stress analysis results Including the stress and relative stress gradient distribution of each unit;

[0084] The correction module is used to import the stress analysis results into the fatigue analysis software, so as to analyze the static overload safety factor of each unit of the flywheel, correct the material allowable limit according to the analysis result, and modify the material allowable limit according to the corrected...

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Abstract

The invention provides a CAE-based structural member static strength analysis method and system, and the method comprises the steps: obtaining a finite element analysis model of a flywheel, setting a contact relation and a constraint boundary of the flywheel, carrying out the static strength analysis of the flywheel, and obtaining a stress analysis result which comprises the stress of each unit; importing a stress analysis result into fatigue analysis software to perform static overload safety coefficient analysis on each unit of the flywheel, and correcting a material allowable limit according to an analysis result so as to obtain a static overload safety coefficient; judging whether the static overload safety coefficient is not less than a preset threshold value or not; if yes, the flywheel strength meets the strength design requirement. According to the CAE-based structural member static strength analysis method, whether the flywheel can pass the burst rotating speed test or not is evaluated through the static overload safety coefficient of each unit of the flywheel, so that the problem that the conventional flywheel CAE analysis method takes stress as an evaluation index and is easy to design is solved.

Description

technical field [0001] The invention relates to the technical field of engine static strength analysis, in particular to a CAE-based static strength analysis method and system for structural parts. Background technique [0002] When the engine is running, it will generate strong vibration, so each component must have sufficient strength. Static strength analysis studies the ability of structures to bear loads under normal temperature conditions, and is usually referred to as strength analysis for short. In addition to studying the bearing capacity, the static strength also includes the ability of the structure to resist deformation (stiffness) and the response (stress distribution, deformed shape, buckling mode, etc.) of the structure under load. [0003] As a disc-shaped part with a large moment of inertia, the flywheel of the engine acts like an energy storage, and its main function is to store the energy and inertia outside the power stroke of the engine. At the power o...

Claims

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Application Information

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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