Journal of Jilin University(Engineering and Technology Edition) ›› 2019, Vol. 49 ›› Issue (5): 1630-1635.doi: 10.13229/j.cnki.jdxbgxb20181222

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Influence factors upon friction coefficient of bioinspired materials with integrated soft and hard layers

Mi WANG1,2(),Zhi-yuan LI1,Wen-xuan FAN1,Jia-yi LI1,Zhen-ning LIU1,Guo-long LU1()   

  1. 1. Key Laboratory for Bionic Engineering Ministry of Education, Jilin University, Changchun 130022, China
    2. College of Engineering, Changchun Normal University, Changchun 130032, China
  • Received:2018-12-11 Online:2019-09-01 Published:2019-09-11
  • Contact: Guo-long LU E-mail:wangmi3214@126.com;guolonglu@jlu.edu.cn

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Abstract:

In order to investigate the friction mechanism of the bioinspired materials with integrated soft and hard layers, the mathematical model of the friction process of bioinspired soft-hard integrated materials is established based on the theory of adhesive friction, taking into account the structure of soft and hard layers. The friction process of bioinspired soft-hard integrated materials was analyzed by numerical analysis software “Abaqus”. The effect of material properties, such as the volume ratio and friction coefficient of soft and hard materials, on the friction coefficient of the bioinspired materials is discussed. Bioinspired materials with integrated soft and hard layers were prepared by 3D printing and friction experiments were carried out. Experimental results verify the theoretical analysis and simulation results.

Key words: basic disciplines of materials science, soft-hard integrated, friction mechanism, bioinspired material, friction coefficient

CLC Number: 

  • TB33

Fig.1

Friction interface of materials"

Fig.2

Friction interface of bio-inspired materials with integrated soft and hard layers"

Fig.3

Finite element model of friction process"

Table 1

Basic parameters of materials"

材料泊松比密度/(g·cm-3)摩擦因数
软0.41.50.1
硬0.41.50.2

Fig.4

Mises stresses distributon of friction process of bio-inspired materials"

Fig.5

Effect of elastic modulus of hard material on friction coefficient of bio-inspired materials"

Fig.6

Effect of friction coefficient of hard material on friction coefficient of bio-inspired materials"

Fig.7

Effect of volume ratio of hard material on frictioncoefficient of bio-inspired materials"

Fig.8

Bio-inspired materials with integrated soft and hard layers"

Fig.9

Specimen of bio-inspired materials with integrated soft and hard layers"

Table 2

Material properties of soft and hard materials"

材料颜色弹性模量E/MPa摩擦因数
100极淡灰16500.0915
200淡灰12000.1057
300淡灰较6300.1398
400灰1600.1486
500较灰230.1954

Table 3

Friction coefficient of bio-inspired materials with integrated soft and hard layers"

参数实际值理论值误差/%
300/1000.11460.10489.303
300/2000.12780.11748.822
300/3000.13980.13980
300/4000.14190.14160.224
300/5000.14970.14765.602
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