Application of Rubber Compressibility to Finite Element Analysis for Thrust Rod

doi:10.7652/xjtuxb201709009

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Application of Rubber Compressibility to Finite Element Analysis for Thrust Rod

更新时间：2025-07-09

- Application of Rubber Compressibility to Finite Element Analysis for Thrust Rod
- Vol. 51, Issue 9, Pages: 63-68+76(2017)
- 作者机构：
  
  吉林大学汽车仿真与控制国家重点实验室,长春,130022
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201709009
  CLC： TH212;TH213.3
- Online First：10 September 2017，
  
  Published：2017
- 稿件说明：
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Application of Rubber Compressibility to Finite Element Analysis for Thrust Rod[J]. 2017, 51(9): 63-68+76.
DOI：

Application of Rubber Compressibility to Finite Element Analysis for Thrust Rod[J]. 2017, 51(9): 63-68+76. DOI： 10.7652/xjtuxb201709009.

摘要

以重型车推力杆橡胶球铰为研究对象

对其纵向刚度进行了有限元仿真和试验验证

分析了橡胶的可压缩性对有限元仿真结果的影响

并对橡胶球铰结构进行了优化。采用单轴拉伸试验获取橡胶的应力-应变数据

由此拟合出超弹性本构模型中应变偏量能部分的参数; 体积应变能部分的参数由泊松比推导得出

通过调整泊松比可以改变橡胶的可压缩性。研究结果表明

橡胶的可压缩性对推力杆橡胶球铰的有限元仿真结果有很大影响

推力杆的刚度随泊松比的增加而增大。泊松比小于0.495时

推力杆刚度的仿真和试验值线性增大; 泊松比大于0.495时

推力杆的刚度值增速加快; 泊松比取0.492时

仿真值与试验值吻合。这表明调整泊松比来修正橡胶材料的可压缩性是合理的

该结果对橡胶材料的设计具有参考价值。

Abstract

Following the finite element analysis and the experimental verification

the vertical stiffness of thrust rod for heavy-duty vehicles is analyzed

the influence of rubber compressibility on the simulation result is taken into consideration

and the structure of the thrust rod is optimized. Uniaxial tension test for rubber specimens is conducted to obtain the strain-stress data

by which the parameters of the deviatoric term are fitted. The parameters of the volumetric term are described by Poisson's ratio. And the compressibility can be adjusted by changing the value of Poisson's ratio. It shows that the compressibility exerts an important effect on the finite element simulation result

and the stiffness of the thrust rod increases with Poisson's ratio increasing. The stiffness of the thrust rod increases linearly when Poisson's ratio is less than 0.495

and it increases rapidly as Poisson's ratio is larger than 0.495. When Poisson's ratio is 0.492

the results of simulation and experiment coincide well. It indicates that modification of rubber compressibility by adjusting Poisson's ratio is reasonable.

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references

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