强激光加载下的TC4钛合金失效行为研究  

Failure Behavior of TC4 Titanium Alloy Under Strong Laser Loading

作　　者：范宁 姚红兵 叶霞[1] 丛嘉伟[1] 朱卫华[2] Fan Ning;Yao Hongbing;Ye Xia;Cong jiawei;Zhu Weihua(School of Mechanical Engineering,Jiarigsu University,Zhenjiang,Jiangsu212013,China;College of Science,Hohai University,Nanjing,Jiangsu21009S,China)

机构地区：[1]江苏大学机械工程学院,江苏镇江212013 [2]河海大学理学院,江苏南京210098

出　　处：《激光与光电子学进展》2019年第16期142-146,共5页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(51775253,61505071);江苏省自然科学基金(BK201505266);江苏大学引进人才科研启动项目(15JDG036,15JDG037)

摘　　要：为了探究金属失效与金属靶材厚度的关系,使用纳秒激光诱导冲击波,获得高压冲击压强。建立了该激光诱导的冲击波加载下TC4钛合金靶材的力学仿真模型,根据计算结果预测TC4靶材损伤情况。根据仿真模型,进行对应的激光加载实验,分析实验结果,并与模拟的结果作对比。当靶材厚度为0.05mm,纳秒激光脉宽为10ns,单脉冲能量为7J,频率为1Hz,光斑直径为5mm时,仿真结果预判靶材发生损伤,实验结果和模拟结果一致。A shock wave induced by a nanosecond laser was used to obtain the high shock pressure to explore the relationship between metal failure and metal target thickness.A TC4 titanium mechanical simulation model under the laser-induced shock wave loading was constructed herein based on the calculation results.The damage of the TC4 target was predicted depending on the calculation results.The corresponding laser loading experiment was performed according to the simulation model.The experimental results were analyzed and compared with the simulated results.The results show that when the target thickness is 0.05 mm,the nanosecond laser pulse width is10 ns,the single pulse energy is 7 J,the frequency is 1 Hz,and the spot diameter is 5 mm.The simulation results also predicts the target damage,and the experimental results are consistent with the simulation results.

关 键 词：激光光学 纳秒激光 有限元分析 失效分析 

分 类 号：TN241[电子电信—物理电子学]