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Method of evaluating durability of torsion beam rear axle on basis of road load

A technology of torsion beam rear axle and evaluation method, which is applied in the direction of vehicle testing, machine/structural component testing, measuring devices, etc., can solve problems such as blankness, lack of durability evaluation methods and means, and weak technical foundation, and achieve improvement Effects of Speed ​​and Accuracy

Active Publication Date: 2015-04-15
SHANGHAI HUIZHONG AUTOMOTIVE MFG
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Problems solved by technology

However, due to the weak technical foundation, my country's complete vehicle and parts companies have always lacked independent durability evaluation methods and means, especially the durability evaluation method of auto parts based on the combination of software and hardware. The application is basically blank

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  • Method of evaluating durability of torsion beam rear axle on basis of road load
  • Method of evaluating durability of torsion beam rear axle on basis of road load
  • Method of evaluating durability of torsion beam rear axle on basis of road load

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Embodiment Construction

[0033] The embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. Although the following content provides detailed implementation methods and specific operation processes, the scope of protection of the present invention is not limited to the following exemplary embodiments.

[0034] combine figure 1 , in step one, use CAE analysis software to establish the rear axle (such as figure 2 shown) finite element model, and through finite element analysis under typical working conditions such as acceleration, braking, steering, torsion, etc., the measurement position of the rear axle strain load is determined by combining the dangerous parts of the rear axle under typical working conditions with test experience . That is to use the CAE finite element analysis method to simulate the force of the rear axle of the vehicle in the vehicle, and according to the stress cloud diagram and force direction calculated by CAE, deter...

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Abstract

A method of evaluating durability of a torsion beam rear axle on basis of road load includes: acquiring a stress concentration position of a workpiece, selecting a plurality of measurement points from the stress concentration position, measuring strain load of the workpiece on a typical pavement of a test field, analyzing measured load spectrum to obtain frequency distribution of each level of load, subjecting each measurement point to damage analysis and comparison by the linear cumulative damage method according to a workpiece material standard S-N curve, acquiring a test point with highest relative damage by comparison and analysis, correcting the workpiece material standard S-N curve on basis of the test point, estimating a workpiece S-N curve, establishing a workpiece fatigue life prediction model according to the workpiece S-N curve, and establishing a durability evaluation index according to the workpiece S-N curve.

Description

technical field [0001] The invention relates to a durability evaluation method of auto parts. Background technique [0002] With the rapid development of the foreign automobile industry, product upgrading has been accelerated. This requires automobile companies to shorten the product development cycle, especially in the late design stage of product development, it is necessary to formulate a method to accelerate product verification, that is, rapid durability evaluation technology. [0003] At present, the weakness of durability evaluation technology for complete automobiles and components has long restricted the level of domestic complete vehicle development. The durability evaluation of automobiles is mainly completed through real vehicle road tests and indoor bench tests, the latter based on the development of road load simulation technology. As the competition in the automobile market continues to intensify, in order to shorten the product development cycle and reduce ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M17/007
Inventor 李军金晓春杨晓俊林阳张启涛
Owner SHANGHAI HUIZHONG AUTOMOTIVE MFG
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