Effects of strain rate and temperature on the tension behavior of polycarbonate

被引：58

作者：

Cao, Kan ^{[1
]}

Wang, Yang ^{[1
]}

Wang, Yu ^{[1
]}

机构：

[1] Univ Sci & Technol China, Dept Modern Mech, CAS Key Lab Mech Behav & Design Mat, Hefei 230027, Anhui, Peoples R China

来源：

MATERIALS & DESIGN | 2012年 / 38卷

基金：

中国国家自然科学基金;

关键词：

Thermoplastics; Impact; Destructive testing; WIDE-RANGE; POLYMERS; DEFORMATION; MECHANICS; TESTS;

D O I：

10.1016/j.matdes.2012.02.007

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Tension stress-strain responses of polycarbonate are presented for strain rates of 1 x 10 (3) s (1)-1700 s (1) and temperatures ranging from -60 to 20 degrees C. The high rate tension tests are performed using a split Hopkinson tension bar apparatus. The influence of strain rate and temperature on the tension behavior of polycarbonate is investigated. Experimental results indicate that the tension behavior of polycarbonate exhibits nonlinear characteristics and rate-temperature sensitivity. The values of yield strength and strain at yield increase with the increase of strain rate and decrease with increasing temperature. A viscoelastic constitutive model consisting of a nonlinear spring and a nonlinear Maxwell element is proposed to characterize the rate and temperature dependent deformation behavior of polycarbonate prior to yielding. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：53 / 58

页数：6

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