巴(单位)
应变率
拉伤
动态范围压缩
航程(航空)
压缩(物理)
结构工程
动态试验
工程类
材料科学
复合材料
地质学
医学
海洋学
内科学
作者
Weinong W. Chen,Bo Song
出处
期刊:Mechanical engineering series
日期:2010-11-02
卷期号:: 291-311
被引量:1
标识
DOI:10.1007/978-1-4419-7982-7_9
摘要
Most Kolsky bars characterize dynamic material properties at strain rates between 5×02 and 1×104 s-1. On the other hand, quasi-static material testing machines operate under closed-loop control at strain rates below 1 s-1. However, many applications require stress-strain data around the intermediate strain-rate range of 5×101 - 5×102 s-1, where data is scarce for any material. This chapter describes designs of Kolsky bars to conduct dynamic experiments at strain rates below 102 s-1, which is the upper limit of modified quasi-static methods. The overlap in strain rates achieved by the modified Kolsky bar and quasi-static techniques bridges the gap in the intermediate strain-rate range, which also facilitates the system-error examination between the quasi-static and dynamic testing methods.
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