摘要
目前分离式Hopkinson压杆试验技术的用途越来越广泛,其已经成为确定材料在高应变率下动态力学性能最简便有效的试验方法。简单回顾了分离式Hopkinson压杆试验技术的发展历史,介绍了分离式Hopkinson压杆的组成及试验原理,简单讨论了弥散效应、界面的摩擦效应、波动效应等影响试验的几个技术问题,阐述了高应变速率力学试验标准的现状。动态测量的材料力学特性精度较准静态测量方法的精度差,且不同设备测量的数据离散性较大,建议规范分离式Hopkinson压杆设备的制造,建立更为详细统一的试验标准体系。
Currently,the split Hopkinson pressure bar experiment technology is widely used,and has become the most simple and effective experimental method for measuring the materials dynamic mechanical performance on the condition of the high strain-rate. The development of the split Hopkinson pressure bar experiment technology is briefly reviewed,the composition and the principle of split Hopkinson pressure bar experiment technology are introduced,several technical problems affecting the test,such as the dispersion effect,the interface friction effect and the volatility effect,are discussed and the present situation of the high strain rate mechanics test standard is introduced. Dynamic measurement of material mechanical properties is less accurate than the quasi static measurement,and the data measured by different equipment is discrete. Thus,it is suggested to standardize the manufacture of the split Hopkinson pressure bar equipment,and establish a more unified and detailed standard experiment system.
出处
《物理测试》
CAS
2017年第4期22-26,共5页
Physics Examination and Testing