Journal of Jilin University(Engineering and Technology Edition) ›› 2024, Vol. 54 ›› Issue (8): 2181-2186.doi: 10.13229/j.cnki.jdxbgxb.20221360

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Numerical simulation on friction characteristics of rubber bushing with bionic flexible surfaces

Ce LIANG1(),Min LI1,Yi LI1,2,Ji-cai LIANG1,2,Qi-gang HAN1()   

  1. 1.College of Materials Science and Engineering，Jilin University，Changchun 130022，China
    2.Chongqing Research Institute，Jilin University，Chongqing 401123，China
  • Received:2022-10-24 Online:2024-08-01 Published:2024-08-30
  • Contact: Qi-gang HAN E-mail:liangce@jlu.edu.cn;hanqg@jlu.edu.cn

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Abstract:

Based on the finite element software ABAQUS， finite element models of the friction process of a car front axle rocker bushing with flexible surfaces similar to the head surface of the dung beetle are established and their friction characteristics are verified. By selecting an appropriate hyperelastic constitutive model and changing the size of the convex hulls on the surface of the bushing， the variation law of the radial and torsional mechanical properties of the flexible friction pair are analyzed. It turns out that the design of bionic convex hulls changes the maximum stress and strain positions of the bushing under stress， then it can effectively prolong the service life of the rubber bushing surface； the contact friction force and friction coefficients of the bionic bushings surfaces are obviously reduced， the friction reduction and wear resistance of the type2 model surface is the best.

Key words: bionic tribology, rubber bushing, bionics design, finite element simulation

CLC Number: 

  • TG356

Fig.1

Appearance of dung beetle and bionic design of convex hull"

Table 1

Dimensions of the convex hull section"

形状R1/mmR2/mmH1/mmH2/mm
Type11.251.251.251.25
Type21.251.750.751.25
Type31.251.750.501.00

Fig.2

Finite element model"

Table 2

Meshing results"

名称单元类型单元尺寸/mm单元数量
标准衬套C3D8RT0.5018 450
Type1C3D8RT0.5074 412
Type2C3D8RT0.5065 466
Type3C3D8RT0.5095 346
外管C3D8RT1.25756
钢板S4R2.50120

Fig.3

Fitting curve of hyperelastic constitutive model"

Table 3

Parameters of the Ogden N3 constitutive model"

本构模型μiαi
Ogden-N31.201820230.550907592
1.680490803×10-311.3337265
1.17984475×10-3-13.4689097

Fig.4

Diagram of stress"

Fig.5

Diagram of strain"

Fig.6

Diagram of friction heat"

Fig.7

Contact friction force of different models"

Fig.8

Automobile front axle rocker arm and scheme of the test system"

Table 4

Maximum friction coefficient"

名称模拟数据实验数据误差/%
标准衬套0.4600.4671.522
Type10.4260.4393.052
Type20.4080.4284.902
Type30.4280.4535.841
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