材料工程Issue(12)：6-9,4.
纯钛高应变率拉伸力学行为的实验研究
Experimental Study on Tension Behavior of Pure Titanium at High Strain Rates
张银喜 1张军 2黄文 1汪洋 2夏源明3
作者信息
- 1. 中国科学技术大学近代力学系,合肥230027
- 2. 中国科学技术大学中科院材料力学行为和设计重点实验室,合肥230027
- 3. 深圳大学土木工程学院,广东深圳518060
- 折叠
摘要
Abstract
Quasi-static and dynamic tension tests for pure titanium were performed using MTS809 testing system and rotating disk bar-bar tensile impact apparatus, respectively. The isothermal tension stress-strain curves at 0. 001s-1 and 0. 01s-1 and adiabatic tension stress-strain curves at 300s-1 and 1400s-1 were obtained. The dynamic tensile recovery test was carried out at the rate of 300s-1 and the isothermal stress-strain curve at the high strain rate was obtained. The results indicate that there exists the strain hardening, strain-rate strengthening and adiabatic temperature-rise softening phenomenon in the tesion behavior of pure titanium. A modified KHL model can describe and characterize the tensile behavior of titanium at different strain rates including high strain rates. The simulated results agree well with the experimental data.关键词
纯钛/高应变率拉伸/本构模型Key words
pure titanium/high strain-rate tension/constitutive model分类
数理科学引用本文复制引用
张银喜,张军,黄文,汪洋,夏源明..纯钛高应变率拉伸力学行为的实验研究[J].材料工程,2011,(12):6-9,4.
