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Method for predicting dynamic stiffness of rubber mount

A prediction method and technology of dynamic stiffness, applied in the field of automobile suspension, can solve problems such as weak applicability, and achieve the effects of low prediction cost, convenient and fast prediction method, and good working conditions

Pending Publication Date: 2021-06-18
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Pan Xiaoyong proposed in "Research on Calculation and Modeling Method of Dynamic Characteristics of Rubber Vibration Isolator [D]. Zhejiang University of Technology, 2009". The frequency is too far apart, and the applicability is very weak

Method used

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  • Method for predicting dynamic stiffness of rubber mount
  • Method for predicting dynamic stiffness of rubber mount
  • Method for predicting dynamic stiffness of rubber mount

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Embodiment Construction

[0061] In the following description, the technical solutions are explained in conjunction with specific illustrations so as to fully understand the application of the present invention. However, the application of the present invention can be implemented in many other ways different from those described here, and similar generalized embodiments made by those skilled in the art without creative work all belong to the protection scope of the present invention.

[0062] The terminology used in the specification is for the purpose of describing particular embodiments only and is not intended to limit the specification. As used in one or more embodiments of this specification and the appended claims, the singular forms "a", "the", and "the" are also intended to include the plural forms unless the context clearly dictates otherwise.

[0063] The invention uses finite element simulation software to simulate the dynamic stiffness curve of the rubber mount to obtain a high-frequency dy...

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Abstract

The invention discloses a method for predicting the dynamic stiffness of a rubber mount, which comprises the following steps of: importing a three-dimensional model of the rubber mount into finite element pretreatment software; carrying out grid division on the rubber mount by adopting a grid to obtain a grid model of the rubber mount; importing the grid model into finite element analysis software, and setting material attributes; setting an analysis step; setting a contact step, loading preloading force, and setting constraint; assigning a grid type; and submitting operation to obtain a frequency-counterforce value, and obtaining the dynamic stiffness according to the frequency-counterforce. The error between the dynamic stiffness amplitude of the rubber mount dynamic stiffness simulation analysis curve and the actual test curve and the corresponding frequency is within 15%, and the error is small, so that the method is feasible and has certain engineering value and economic value.

Description

technical field [0001] The invention belongs to the field of automobile mounts, in particular to a method for predicting the dynamic stiffness of rubber mounts. Background technique [0002] The rubber mount is a vibration isolation element between the powertrain and the frame of the vehicle. It is used to isolate the high-frequency small-amplitude vibration generated when the powertrain is working, and to attenuate the low-frequency large-amplitude vibration caused by the unevenness of the ground. A rubber suspension with excellent performance is conducive to improving the NVH performance of the car, thereby improving the ride comfort of the occupants. [0003] With the rapid development of the world economy, energy shortage and environmental pollution are becoming more and more serious, the transformation of traditional fuel vehicles is imperative. The development of new energy vehicles has ushered in new opportunities, and electric vehicles have attracted widespread atte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/15G06F30/17G06F30/23G06F111/04G06F119/14
CPCG06F30/15G06F30/17G06F30/23G06F2111/04G06F2119/14
Inventor 上官文斌彭捷
Owner SOUTH CHINA UNIV OF TECH
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