Upper limit of constant strain rates in a split Hopkinson pressure bar experiment with elastic specimens
Upper limit of constant strain rates in a split Hopkinson pressure bar experiment with elastic specimens
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DOI：
10.1007/bf02427992
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发表时间：
2005-10
影响因子：
2.4
通讯作者：
Yi Pan;Weinong Chen;B. Song
中科院分区：
文献类型：
--
作者：
Yi Pan;Weinong Chen;B. Song
根据试样的性质和线性斜坡加载，估算了分离式霍普金森压杆加载的线弹性试样中可达到的恒定应变率的上限。导出并讨论了恒应变速率平台的判据。对S-2玻璃/SC 15复合材料和聚甲基丙烯酸甲酯材料在不同载荷下的动态实验结果验证了模型的正确性。
The upper limit of the achievable constant strain rates in linearly elastic specimens loaded by a split Hopkinson pressure bar is estimated based on the specimen properties and a linear ramp loading. The criterion for a plateau of constant strain rate is derived and discussed. Dynamic experimental results on an S-2 glass/SC15 composite and polymethyl-methacrylate subjected to various ramp loadings verify the modeling results.