Specimen Inertia in high strain rate tensile testing
Specimen Inertia in high strain rate tensile testing
复制标题
高应变率拉伸试验中的样本惯性
DOI：
10.1051/epjconf/20159401050
复制
发表时间：
2015
影响因子：
--
通讯作者：
C. Siviour
中科院分区：
文献类型：
--
作者：
M. Hockly;C. Siviour
众所周知，材料的动态机械响应的测量容易受到由于样品的惯性而引起的误差的影响，这除了固有的材料强度之外还引起应力。许多作者已经推导出这些应力在压缩实验方程，这些方程可以用来作为一个良好的试样设计的指导方针。然而，在拉伸实验中的等效效应的文献中没有这样的方程。本文首先考虑并合理化可用于压缩的方程，然后产生一组可用于试件设计的方程，例如，拉伸霍普金森杆实验。
It is well established that measurements of the dynamic mechanical response of materials are susceptible to errors due to the inertia of the specimen, which causes stresses in addition to the intrinsic material strength. A number of authors have derived equations for these stresses in compression experiments; these equations can be used as a guideline for good specimen design. However, no such equations have been presented in the literature for the equivalent effects in tensile experiments. This paper begins by considering and rationalising the equations available for compression, before producing a set of equations which can be used in design of specimens for, e.g., tensile Hopkinson bar experiments.