An improved model of damage depth of shock-melted metal in microspall under triangular wave loading

作     者：Wen-Bin Liu An-Min He Kun Wang Jian-Ting Xin Jian-Li Shao Nan-Sheng Liu Pei Wang 刘文斌;何安民;王昆;辛建婷;邵建立;刘难生;王裴

作者机构：Department of Modern MechanicsUniversity of Science and Technology of ChinaHefei 230027China Institute of Applied Physics and Computational MathematicsBeijing 100094China Graduate School of China Academy of Engineering PhysicsBeijing 100088China College of Materials Science and EngineeringHunan UniversityChangsha 410082China Science and Technology on Plasma Physics LaboratoryResearch Center of Laser FusionChina Academy of Engineering PhysicsMianyang 621900China State Key Laboratory of Explosion Science and TechnologyBeijing Institute of TechnologyBeijing 100081China Center for Applied Physics and TechnologyPeking UniversityBeijing 100871China 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2021年第30卷第9期

页      面：412-418页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.U1530261 and 11572054) the Science Challenge Project,China(Grant No.TZ2016001) 

主　　题：damage depth theoretical modeling microspall triangular wave 

摘      要：Damage depth is an important dynamic parameter for describing the degree of material damage and is also a key fundamental issue in the field of impact compression *** present work is dedicated to the damage depth of shock-melted metal in microspall under triangular wave loading,and an improved model of damage depth considering the material s compressibility and relative movement is *** damage depth obtained from the proposed model is in good agreement with the laser-driven shock loading *** with the previous model,the proposed model can predict the damage depth of shock-melted metal in microspall more ***,two-groups of the smoothed particle hydrodynamics(SPH)simulations are carried out to investigate the effects of peak stress and decay length of the incident triangular wave on the damage depth,*** the decay length increases,the damage depth increases *** the peak stress increases,the damage depth increases nonlinearly,and the increase in damage depth gradually slows *** results of the SPH simulations adequately reproduce the results of the proposed model in terms of the damage ***,it is found that the threshold stress criterion can reflect the macroscopic characteristics of microspall of melted metal.