舰船板梁结构高速侵彻时的数值仿真实践

NUMERICAL SIMULATION OF HIGH-SPEED PENETRATION INTO SHELL-BEAM STRUCTURE

对板梁结构侵彻问题 ,指出采用等效板模型及线性强化材料假设的传统计算方法存在的问题。从材料的动态性能入手 ,分析了撞击速度、靶板厚度等对结构动态响应的影响。研究了加筋板结构模型的具体仿真实现 .给出了非线性动力学的理论介绍 ,主要的实现方法和相应的仿真结果 ,检验了ANSYS/LS -SYNA接触算法的可靠性 .证明采用数值仿真研究高速侵彻问题是可行的 .

Studies the simulation of shell_beam structure by analysing the effect of penetration rate and target_shell thickness on the dynamic response of structure from the dynamic properties of material,presents the theoretical presentation of non_linear dynamics,major ways of realization and corresponding simulation results,verifies the reliability of ANSYS/LS-SYNA contact algorithm,and proves that it is feasible to study the high_speed penetration by numerical simulation.