轿车前轴摇臂衬套仿生柔性接触表面摩擦特性数值模拟

doi:10.13229/j.cnki.jdxbgxb.20221360

摘要/Abstract

摘要：

基于有限元软件ABAQUS，建立了表面具有类蜣螂头部凸包结构的轿车前轴摇臂衬套的柔性摩擦副摩擦过程的有限元模型，并对其摩擦特性进行验证。通过筛选合适的超弹性本构模型和改变衬套表面凸包结构的尺寸，模拟分析柔性摩擦副径向和扭转方向的力学特性变化规律。结果表明：仿生凸包设计改变了衬套受力时的最大应力和应变位置，降低了橡胶衬套开裂的可能性；仿生衬套表面的接触摩擦力和摩擦系数明显减小，其中Type2模型表面的减阻耐磨效果最好。

关键词: 仿生摩擦学, 橡胶衬套, 仿生设计, 有限元模拟

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

中图分类号:

TG356

梁策,李敏,李义,梁继才,韩奇钢. 轿车前轴摇臂衬套仿生柔性接触表面摩擦特性数值模拟[J]. 吉林大学学报(工学版), 2024, 54(8): 2181-2186.

Ce LIANG,Min LI,Yi LI,Ji-cai LIANG,Qi-gang HAN. Numerical simulation on friction characteristics of rubber bushing with bionic flexible surfaces[J]. Journal of Jilin University(Engineering and Technology Edition), 2024, 54(8): 2181-2186.

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参考文献 14

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形状	R₁/mm	R₂/mm	H₁/mm	H₂/mm
Type1	1.25	1.25	1.25	1.25
Type2	1.25	1.75	0.75	1.25
Type3	1.25	1.75	0.50	1.00

名称	单元类型	单元尺寸/mm	单元数量
标准衬套	C3D8RT	0.50	18 450
Type1	C3D8RT	0.50	74 412
Type2	C3D8RT	0.50	65 466
Type3	C3D8RT	0.50	95 346
外管	C3D8RT	1.25	756
钢板	S4R	2.50	120

本构模型	μ_i	α_i
Ogden-N3	1.20182023	0.550907592
	1.680490803×10^-3	11.3337265
	1.17984475×10^-3	-13.4689097

名称	模拟数据	实验数据	误差/%
标准衬套	0.460	0.467	1.522
Type1	0.426	0.439	3.052
Type2	0.408	0.428	4.902
Type3	0.428	0.453	5.841