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Automobile transmission shaft high-antitorque-reliability tolerance optimization design method

A technology for optimizing design and transmission shafts, applied in computing, special data processing applications, instruments, etc., can solve problems such as difficulty in obtaining optimal solutions, damage interaction, and inability to guarantee the safety of automobile transmissions

Pending Publication Date: 2018-11-30
WENZHOU UNIVERSITY
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the dual damage interaction of the automobile transmission shaft generally undergoes a complex dynamic physical process of short crack initiation, short crack growth, long crack growth, and failure, which is difficult to describe with a static mathematical model.
At present, the traditional safety factor method or conventional optimization method is basically used in the design of automobile transmission devices. These design methods ignore the double destructiveness of randomness, dynamics and physical changes of each design variable, so it is difficult to obtain The optimal solution, which cannot guarantee the safety of the car transmission

Method used

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  • Automobile transmission shaft high-antitorque-reliability tolerance optimization design method
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  • Automobile transmission shaft high-antitorque-reliability tolerance optimization design method

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Embodiment Construction

[0081] see figure 1 , the present invention discloses a high torsional reliability tolerance optimization design method of an automobile transmission shaft, comprising the following steps:

[0082] (1) According to the structure and material characteristics of the automobile transmission shaft, determine the parameters that affect the reliability of the automobile transmission shaft;

[0083] (2) Establish a multi-objective function for the optimal design of the high torsional reliability tolerance of the automobile transmission shaft;

[0084] (3) Establish multi-mode constraint conditions for optimal design;

[0085] (4) Solve the optimal design model of the high torsional reliability tolerance of the automobile transmission shaft to obtain the optimal design parameters.

[0086] As preferably, step (1), under the certain situation of power, influences the parameter of automobile transmission shaft reliability to set: the modulus of elasticity of transmission shaft is E, t...

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Abstract

The invention discloses an automobile transmission shaft high-antitorque-reliability tolerance optimization design method. The method includes following steps: according to structure and material characteristic of an automobile transmission shaft, determining parameters having impact on reliability of the automobile transmission shaft; building a multi-target function of automobile transmission shaft high-antitorque-reliability tolerance optimization design; building optimization design multimode constraint conditions; solving an automobile transmission shaft high-antitorque-reliability tolerance optimization design model to acquire optimal design parameters. Antitorque strength reliability, antitorque rigidity reliability and weight of the transmission shaft are taken as a target function, the antitorque reliability and section area sensitivity information are embedded in the target function, and constraint conditions of parameters are taken into comprehensive consideration, so that high reliability of the transmission shaft can still be maintained while design parameter perturbation is ensured, and size and weight of a transmission device are reduced; the problem of key technology in automobile transmission device reliability design is solved.

Description

technical field [0001] The invention relates to the technical field of mechanical optimization design, in particular to a tolerance optimization design method for high torsional reliability of an automobile transmission shaft. Background technique [0002] The drive shaft is an important part of power transmission in the car drive train. Its function is to transmit the power of the engine to the wheels together with the gearbox and drive axle, so that the car can generate driving force. Its stability and reliability are related to the performance of the car. and safe. [0003] During the operation of the car, the transmission shaft continuously transmits the power of the engine to the wheels. Under the action of this random and asymmetrical torque force, it will cause double damage to the transmission shaft, that is, damage to the torsional strength and damage to torsional stiffness. With the growth of time, these two kinds of damage interact and accumulate gradually. When ...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/15G06F30/17
Inventor 万毅黄海隆
Owner WENZHOU UNIVERSITY
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