Penetration of disk fragments following impact on thin plate

作     者：Juan-juan LI Hai-jun XUAN Lian-fang LIAO Wei-rong HONG Rong-ren WU 

作者机构：Insititute of Chemical Machinery Zhejiang University Hangzhou 310027 China Shenyang Aeroengine Research Institute Shenyang 110015 China 

出 版 物：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 (浙江大学学报（英文版）A辑（应用物理与工程）)

年 卷 期：2009年第10卷第5期

页      面：677-684页

核心收录：

学科分类：081401[工学-岩土工程] 08[工学] 0814[工学-土木工程] 081201[工学-计算机系统结构] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：Project (No. 1104-03) supported by the Aviation Propulsion Technology Development Program  China 

主　　题：Aeroengine Disk burst failure Case containment capability Ballistic limit velocity 

摘      要：To investigate the ballistic resistance and failure pattern of aeroengine casing following the impact of disk fragments, and to determine the optimum case structure, the phenomena of a 1/3rd disk fragment impact on single and double-layered thin plate targets were simulated using nonlinear dynamical analysis software ***. Strain rate effect was introduced in a Johnson-Cook (JC) material model for the disk fragment and the plate. Impact modeling was based on the Arbitrary Lagrange-Eulerian method, and simulated using explicit finite element method (FEM). Simulation results showed that the major failure pattern of the plate is shearing and tensile fracture with large plastic deformation. It was also concluded that the ballistic limit velocity increases with the standoff distance when it is beyond a certain value, and that greater resistance is obtained when the front plate has either a proportionately low or high thickness. The impact resistance of a double-layered plate may exceed that of a single plate if the thicknesses and standoff distance of the two plates are set appropriately.