Ratcheting behavior of PTFE under cyclic compression

被引：94

作者：

Chen, X ^{[1
]}

Hui, SC ^{[1
]}

机构：

[1] Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China

来源：

POLYMER TESTING | 2005年 / 24卷 / 07期

基金：

中国国家自然科学基金;

关键词：

PTFE; cyclic compression; ratcheting; rate dependence;

D O I：

10.1016/j.polymertesting.2005.07.006

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this paper, loading rate dependence of stress-strain response and ratcheting behavior under compression for PTFE were studied. The effects of loading rate, mean stress and stress amplitude on the ratcheting behavior of PTFE are discussed. It is shown that PTFE is a rate dependent material, but it is insensitive to loading rate when the rate is higher than 40 N/s. Ratcheting strain increases as the loading rate decreased. When loading rate is higher than 40 N/s, there is little effect of loading rate on ratcheting strain rate. At the same stress amplitude (mean stress), the ratcheting strain and ratcheting strain rate increase as mean stress (stress amplitude) increased. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：829 / 833

页数：5

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