Optimization Method of Vibration Stability of Automobile Disc Brake System

A disc brake and brake technology, which is applied in the fields of instruments, special data processing applications, electrical digital data processing, etc., can solve problems such as difficulty in application
CN103544349BInactive Publication Date: 2016-11-23HUNAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HUNAN UNIV
Publication Date
2016-11-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for optimizing the vibration stability of an automobile disc brake system, comprising: a parameter determination step, defining the research parameters of the brake system, and determining the research parameters as design parameters and uncertainty parameters; a model building step, establishing the brake system The simplified finite element model of the system; the sample point acquisition step is to obtain sample points by sampling; the solution step is to substitute the sample points into the finite element simplified model to solve complex eigenvalues ​​and judge the unstable mode of the brake system; the relationship establishment step is to obtain Obtain the relational expression of the research parameter of unstable mode and brake system; Optimizing step, take the damping ratio of unstable mode as optimization target, establish the interval optimization model of vibration stability of brake system, and carry out described interval optimization model Optimizing, searching for the optimal value of the design parameters, the present invention considers the uncertainty of system parameters in actual engineering, and the obtained optimal solution has higher engineering guiding significance.
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Description

technical field

[0001] The invention relates to the field of automobile braking, in particular to an optimization method for the vibration stability of an automobile disc brake. Background technique

[0002] Automobile braking noise has become one of the main sources of noise pollution in cities. If the brake design of the car is unreasonable, it may cause strong vibration when braking, making the brake in a state of vibration instability and forming harsh noise.

[0003] Since the structural shape, size and process of the brake product have been determined in the later stage of design, the degree of freedom to modify the design space has been greatly reduced. Therefore, in the early design, it is necessary to reasonably match the structural parameters of the brake components to suppress Brake noise, improve vehicle NVH performance.

[0004] The complex eigenvalue analysis method based on finite element is an effective method to study the vibration stability of automobile ...

Claims

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