中文摘要：

在冲击拉伸实验装置的入射杆和透射杆上加入余波吸收器，消除反射余波对试件的二次加载，实现冲击条件下的动态拉伸加卸载实验，发展了动态拉伸复元技术，获得了纯钛在动态拉伸条件下的等温应力应变曲线．通过Johnson-Cook模型描述温度的软化效应，对比等温应力应变曲线和绝热曲线，确定纯钛的绝热温升效应．结果表明，动态拉伸条件下耗散功向热量的转化比率约为60％．

英文摘要：

Wave absorbers were added to a dynamic tensile apparataus to eliminate the reflected wave in the input and output bars in a dynamic tensile experiment, so that the dynamic load-unload technique was realized. Based on this technique, the dynamic tensile recovery technique was developed, and the dynamic isothermal stress-strain curve of titanium was obtained. Using the John-Cook model to describe the thermal softening effect, the effect of adiabatic temperature rise was characterized by comparing the isothermal stress-strain curve with the adiabatic one. About 60% of plastic work was converted to heat during dynamic plastic deformation.