钛合金波纹夹芯结构高应变速率下压缩行为研究  

Compressive Behaviors of Titanium Corrugated Sandwich Structures Under High Strain Rates

作　　者：王文涛[1,2] 陶杰 WANG Wentao;TAO Jie(College of Material Science and Technology,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites,Nanjing 210016,China)

机构地区：[1]南京航空航天大学材料科学与技术学院,江苏南京210016 [2]江苏先进无机功能复合材料协同创新中心,江苏南京210016

出　　处：《机械制造与自动化》2018年第5期36-40,共5页Machine Building & Automation

基　　金：江苏省研究生科研创新基金(KYLX_0263)

摘　　要：利用霍普金森压杆对不同波纹夹芯层数和不同夹芯排布方向的钛合金波纹夹芯结构进行高应变速率压缩试验,分析不同结构的压缩行为和应变率效应,建立5种波纹夹芯结构的Perzyna经验本构模型,并对其离散度和适应性进行了分析与比较;结果发现5种钛合金波纹夹芯结构高应变速率下的压缩行为具有明显的应变率效应。Perzyna经验本构模型基本上能够描述钛合金波纹夹芯结构的压缩行为,只有MD/MD结构误差较大。This paper uses Split Hopkinson Pressure Bar(SHPB)apparatus to give a compression test for the compressive behaviors of titanium corrugated sandwich structures under high strain rates,analyzes the compressive behaviors and the strain effect of the different structures,establishes the Perzyna empirical constitutive models of five types of corrugated sandwich structures,analyzes and compares its dispersion and adaptability.The obvious strain effect exists in its compressive behaviors under high strain rate.The Perzyna empirical constitutive model can be generally used to describe the compressive behaviors of the corrugated sandwich structures,except for MD/MD structure.

关 键 词：钛合金 波纹夹芯结构 霍普金森 本构方程 

分 类 号：TG146.23[一般工业技术—材料科学与工程]