铁道科学与工程学报2017，Vol.14Issue(1)：155-160,6.
机车钢化玻璃在半正弦波动态加载下的力学特性
Mechanical properties oflocomotive tempered glass under the half sine wave dynamic load
摘要
Abstract
Different from the traditional rectangular wave dynamic load method, the technology of half sine wave was used to test the locomotive tempered glass mechanical properties as the stain rate varies in the middle and low range. In the experiment, the constant strain rate was obtained, also, the P-C oscillating effect was removed and the balance of the stress was came true. So the results of the experiment have high reliability. According to the evidence shown in the experiment, material of tempered glass has the character of bilinear in its σ-ε relation-ship, what’s more, it is obviously rate-dependent. Under the strain rate of 326 s-1, the max stressσchanges as the strain rateεin the rule of linear and the slope is 2.76. When the strain rate varied within 326 s-1 to 529 s-1 , the max stress increased less, the slope decreased gradually, there is a parabola relationship betweenσandε.关键词
机车钢化玻璃/半正弦波/双线性/率相关Key words
locomotive tempered glass/half sine/bilinear/rate-dependent分类
通用工业技术引用本文复制引用
许良中,潘云艳,李志伟..机车钢化玻璃在半正弦波动态加载下的力学特性[J].铁道科学与工程学报,2017,14(1):155-160,6.基金项目
中国铁路总公司科研资助项目重大项目(2016J002-B) （2016J002-B）
