0Cr18Ni10Ti动态力学性能及其冲击吸能应用  

Dynamic mechanical behaviors of 0Cr18Ni10Ti and impact energy absorption application

作　　者：冉治国 何春涛[1] 李利军 王坚 杨杰 RAN Zhiguo;HE Chuntao;LI Lijun;WANG Jian;YANG Jie(Beijing Institute of Mechanical Equipment,Beijing 100854,China)

机构地区：[1]北京机械设备研究所,北京100854

出　　处：《西北工业大学学报》2021年第S01期27-31,共5页Journal of Northwestern Polytechnical University

基　　金：国防基础科研重大专项(JCKY2016204A601)资助。

摘　　要：对不锈钢0Cr18Ni10Ti进行了分离式霍普金森压杆(SHPB)冲击试验,获得了不同应变率下材料的动态力学响应,采用Cowper-Symonds本构模型对其力学性能进行拟合,获得了相关的模型参数。利用不锈钢0Cr18Ni10Ti的高延展性和韧性,设计了一个依靠径向扩张变形从而吸收冲击能量的圆管,并采用拟合得到的材料本构模型对该圆管进行了低速冲击仿真,分析结果表明采用该不锈钢制成的圆管具有较为理想的缓冲力-位移响应,且载荷波动小,是一种较为理想的吸能装置。The stainless steel of 0Cr18Ni10Ti was studied by split Hopkinson press bar(SHPB)experiment,and dynamic mechanical behaviors were obtained under different strain rates.Cowper-Symonds constitutive model was applied and parameters were determined.An expansion tube with material 0Cr18Ni10Ti used to absorb impact energy was designed,and finite element method was introduced to simulate low speed impact on such a tube.Analysis result shows that the impact force versus displacement curve was perfect,and the load fluctuation is small.Generally,such an expansion tube is perfect for impact energy absorption.

关 键 词：不锈钢 0CR18NI10TI 动态力学响应 吸能圆管 

分 类 号：TU311[建筑科学—结构工程]