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Automobile drive axle vibration simulation analysis method

A technology of simulation analysis and drive axle, which is applied in the field of vehicle transmission system and NVH, can solve the problems of limited space for parameter change optimization, long processing cycle, large amount of data, etc., to improve NVH performance, improve comfort, and save production cost effect

Active Publication Date: 2020-05-01
CATARC AUTOMOTIVE TEST CENT TIANJIN CO LTD +1
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Problems solved by technology

[0009] Although the general finite element simulation method can model the entire system, it has a large amount of data and a long pre-processing cycle, and it has a relatively large impact on the simulation results of the geometric shape, setting parameters, and processing technology of key parts such as gears and bearings in the transmission system. Large parameters can be changed to optimize the space is very limited

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  • Automobile drive axle vibration simulation analysis method
  • Automobile drive axle vibration simulation analysis method
  • Automobile drive axle vibration simulation analysis method

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Embodiment Construction

[0048] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0049] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0050] The present invention uses the method of combining finite element simulation technology and special-purpose transmission analysis software to establish the finite element model of the automobile drive axle housing, and derives the stiffness and mass matrix of the bearing nodes of the reducer. Bearings, gears, splines, half shafts and differentials are modeled, and the stiffness and mass matrices exported from the finite element model are imported into them to calculate the dynamic displacement loads of the bearing nodes under each working condition, and bring this load back into the finite element model. The dynamic response analysis is carried out in the meta-model, and the vibra...

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Abstract

The invention provides an automobile drive axle vibration simulation analysis method. The method comprises the following steps: 1) establishing a main speed reducer transmission model of an automobiledrive axle through transmission analysis software; 2) extracting positioning size information of a bearing center point of a main speed reducer; 3) establishing a shell finite element model of a drive axle shell through finite element software; 4) generating a mass and rigidity matrix of a bearing center point; 5) importing the mass and rigidity matrix of the central point of a bearing into transmission analysis software; 6) outputting dynamic displacement information of the bearing center point under different working conditions; 7) calculating the shell vibration response under the bearingload. Finite element software and professional transmission analysis software are combined, the test amount is reduced, the test period is shortened, a simulation model is used for optimizing and improving the drive axle, the improvement effect is checked before formal improvement and implementation, and the production cost of enterprises is saved.

Description

technical field [0001] The invention belongs to the field of vehicle transmission system and NVH, and in particular relates to a vibration simulation analysis method of an automobile driving axle. Background technique [0002] At present, there are relatively mature methods and solutions for the test and detection of transmission systems such as drive axles, involving vibration, noise, fatigue and transmission errors. The equipment and instruments used in the test, test conditions, connection methods, and key data are analyzed and introduced. Invention patent 201710370259.9 invented a drive axle noise test system, introduced the equipment used to build the test system, the distribution of test points, and the test conditions used. The semi-anechoic chamber was used as the test environment to ensure the accuracy of the noise test results. The invention patent takes the actual common vehicle speed as the working condition, converts it into the speed data of the input end of t...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23G06F30/15
CPCY02T90/00
Inventor 李旭伟田程张林涛郑永明杜天强吴迪王恩鹏刘程杨东绩杨清淞
Owner CATARC AUTOMOTIVE TEST CENT TIANJIN CO LTD
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