Crack propagation and damage evolution of metallic cylindrical shells under internal explosive loading

作     者：Yusong Luo Weibing Li Junbao Li Wenbin Li Xiaoming Wang Yusong Luo;Weibing Li;Junbao Li;Wenbin Li;Xiaoming Wang

作者机构：ZNDY of Ministerial Key LaboratoryNanjing University of Science and TechnologyNanjing210094China 

出 版 物：《Defence Technology（防务技术）》 (Defence Technology)

年 卷 期：2024年第39卷第9期

页      面：133-146页

核心收录：

学科分类：08[工学] 082603[工学-火炮、自动武器与弹药工程] 0826[工学-兵器科学与技术] 0801[工学-力学（可授工学、理学学位）] 

基　　金：supported by the National Natural Science Foundation of China (Grant No.12302437) Natural Science Foundation of Jiangsu Province (BK20230939) China Postdoctoral Science Foundation (2021M701710) 

主　　题：Internal explosive loading Failure criterion Crack propagation Damage evolution Freeze-recovery test 

摘      要：This paper investigates the three-dimensional crack propagation and damage evolution process of metallic column shells under internal explosive *** calibration of four typical failure parameters for 40CrMnSiB steel was conducted through experiments and subsequently applied to *** numerical simulation results employing the four failure criteria were compared with the differences and similarities observed in freeze-recovery tests and ultra-high-speed *** analysis addressed the critical issue of determining failure criteria for the fracture of a metal shell under internal explosive *** upon this foundation,the damage parameter D_(c),linked to the cumulative crack density,was defined based on the evolution characteristics of a substantial number of *** relationship between the damage parameter and crack velocity over time was established,and the influence of the internal central pressure on the damage parameter and crack velocity was *** in the fracture modes were found under different failure criteria,with the principal strain failure criterion proving to be the most effective for simulating 3D crack propagation in a pure shear fracture *** statistical analysis of the shell penetration fracture radius data,it was determined that the fracture radius remained essentially constant during the crack evolution process and could be considered a *** propagation velocity of axial cracks ranged between 5300 m/s and 12600 m/s,surpassing the Rayleigh wave velocity of the shell material and decreasing linearly with *** increase in shell damage exhibited an initial rapid phase,followed by deceleration,demonstrating accelerated damage during the propagation stage of the blast wave and decelerated damage after the arrival of the rarefaction *** study provides an effective approach for investigating crack propagation and damage *** derived crack propagation and damage evolution law s