Experimental and numerical investigations on size effect of friction in meso-/micro-forming without lubricant

被引：6

作者：

Han, Juanjuan ^{[1
]}

Lin, Yao ^{[1
]}

Zheng, Wei ^{[2
]}

Wang, Guangchun ^{[1
]}

机构：

[1] Shandong Univ, Key Lab Liquid Solid Struct Evolut & Proc Mat, Minist Educ, Jinan 250061, Shandong, Peoples R China

[2] Shandong Jianzhu Univ, Sch Mat Sci & Engn, Jinan 250101, Shandong, Peoples R China

来源：

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY | 2020年 / 106卷 / 11-12期

基金：

中国国家自然科学基金;

关键词：

Meso-; micro-forming; Size effect; Dry friction; Experiment; Simulation; Normal pressure; CONTACT; STRESS;

D O I：

10.1007/s00170-020-04959-x

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

The main purpose of this paper is to investigate the variation mechanism of tribological size effect in meso-/micro-forming processes. The effects of specimen size on friction behavior in meso-/micro-forming were investigated through the pure copper upsetting experiments without lubricant. It reveals that the friction coefficient on contact surface is getting smaller with the decreasing of specimen size. Then, the influence mechanisms of specimen size on friction behavior were studied by the combination of experimental and numerical methods. It indicates that as the specimen size decreases, the reducing friction coefficient is caused by the decreasing of normal pressure on contact surface in meso-/micro-forming processes without lubricant. The investigation results are very useful for predicting friction behavior in meso-/micro-forming processes without lubricant.

引用

页码：4869 / 4877

页数：9

共 20 条

[1] FRICTION STRESS AND NORMAL STRESS IN BULK METAL-FORMING PROCESSES [J].