Numerical Simulation Investigation on Ballistic Resistance of Aluminum Alloy Triangle Corrugated Sandwich Plates against Blunt-nosed Projectile Impacts

Abstract

Abstract: In order to study the impact resistance and failure mode of aluminum alloy triangular corrugated sandwich plates impacted by blunt-nosed projectiles, the numerical simulation model of plates impacted by projectiles were established by finite element software ABAQUS/Explicit, and also the validity of the model and its parameters were verified by tests. Based on the results of numerical simulation, the influence laws and mechanism of the geometry on the protection performance, failure mode and energy absorption of triangular corrugated sandwich plates were analyzed, and also compared with monolithic plates of the same area density. The results show that the structure of target has effects on the impact resistance, and also the impact resistance of triangular corrugated sandwich plates is lower than that of monolithic plates. Moreover, the impact resistance of triangular corrugated sandwich panels may be significantly improved by increasing the angles of the core topology, and the geometrical sizes of the plates also affect the failure mode and energy dissipation characteristics.

Key words: triangular corrugated sandwich plate, ballistic limit velocity, energy absorption performance, failure mode

摘要： 为研究铝合金三角形波纹夹芯板对平头弹体的抗冲击性能及损伤特性，利用有限元软件ABAQUS/Explicit建立弹体冲击靶板的数值模拟模型，并结合实验验证了模型及其参数的有效性。基于数值计算结果，分析了三角形波纹夹芯板几何结构对其防护性能、失效模式和能量吸收的影响规律及机理，并与等面密度单层板进行对比分析，研究结果表明，靶体几何结构对其抗冲击性能存在影响，三角形波纹夹芯板抗冲击性能低于单层板抗冲击性能。此外，增加芯体拓扑结构夹角能显著提高三角形波纹夹芯板的抗冲击性能，并且靶板几何形状会对其失效模式及耗能特性存在影响。

关键词: 三角形波纹夹芯板, 弹道极限速度, 吸能性能, 失效模式

CLC Number:

O385

YANG Yonggang;Tian Rui;LU Mingjian;DENG Yunfei. Numerical Simulation Investigation on Ballistic Resistance of Aluminum Alloy Triangle Corrugated Sandwich Plates against Blunt-nosed Projectile Impacts[J]. China Mechanical Engineering.

杨永刚;田锐;路明建;邓云飞. 铝合金三角形波纹夹芯板对平头弹抗冲击特性数值模拟研究[J]. 中国机械工程.

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