Role of asperity creep in time- and velocity-dependent friction of a polymer glass

被引：17

作者：

Berthoud, P ^{[1
]}

Baumberger, T ^{[1
]}

机构：

[1] Ecole Normale Super, Phys Mat Condensee Lab, F-75231 Paris 05, France

来源：

EUROPHYSICS LETTERS | 1998年 / 41卷 / 06期

关键词：

D O I：

10.1209/epl/i1998-00202-4

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study time-strengthening and velocity-weakening friction of poly(methyl methacrylate) from room temperature up to the glass transition. The role of creep of asperities under normal load is systematically investigated. It is confirmed to be a primary cause of ageing of the static friction force. Velocity weakening is also strongly enhanced on approaching the glass transition, whence promoting stick-slip oscillations. The quantitative analysis of sliding friction, based on a widely used rule of "time and velocity equivalence", is found to be inadequate in the transition region.

引用

页码：617 / 622

页数：6

共 14 条

[1] Contact dynamics and friction at a solid-solid interface: Material versus statistical aspects
Baumberger, T
[J]. SOLID STATE COMMUNICATIONS, 1997, 102 (2-3) : 175 - 185
[2] Baumberger T, 1996, J PHYS I, V6, P1021, DOI 10.1051/jp1:1996113
[3] BERTHOUD P, IN PRESS EUROPEAN B
[4] BERTHOUD P, 1997, FRICTION ARCHING CON, P3
[5] Bowden FP, 2001, Friction and Lubrication of Solids
[6] THE EFFECT OF STRAIN-RATE SENSITIVITY ON DYNAMIC FRICTION OF METALS
BRECHET, Y
ESTRIN, Y
[J]. SCRIPTA METALLURGICA ET MATERIALIA, 1994, 30 (11): : 1449 - 1454
[7] BROCKLEY CA, 1968, T ASME F, V90, P35
[8] Caroli C, 1997, J PHYS I, V7, P1391, DOI 10.1051/jp1:1997137
[9] DIETERICH JH, 1984, PURE APPL GEOPHYS, V43, P283
[10] Persson B. N. J., 1998, NANOSCI TECHNOL

← 1 2 →