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首页> 外文会议>Biennial International Conference on Engineering, Science, Construction, and Operations in Challenging Environments >Ballistic Impact Simulations of an Aluminum 2024 Panel Using *MAT_224 in LS-DYNA Considering Oblique Incidence and Attitude Angles of a Rectangular Projectile
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Ballistic Impact Simulations of an Aluminum 2024 Panel Using *MAT_224 in LS-DYNA Considering Oblique Incidence and Attitude Angles of a Rectangular Projectile

机译：在LS-DYNA中使用*MAT_224模拟2024铝板的弹道碰撞，考虑矩形弹丸的斜入射角和姿态角

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摘要

The objective of this study is (1) to validate the *MAT_224 model for Aluminum 2024 with complex impact conditions; (2) to evaluate its predictability of ballistic limit and residual velocities of a projectile under various impact conditions; and (3) to investigate the effects of oblique and attitude angle variations of a projectile on penetration to a target plate. The newly developed *MAT_224 model version 2.0 for Aluminum 2024 was utilized to simulate a series of ballistic impact tests conducted by NASA using a rectangular block projectile of Inconel 718 with sharp edges and corners, impacting Aluminum 2024 flat panels at oblique angles of incidence. A full ballistic impact simulation model was created with over twenty million solid elements and used to conduct approximately one hundred ballistic impact simulations. Overall, the ballistic impact simulations showed highly comparable results with the NASA tests in terms of projectile residual velocities, failure shapes of the target plates, and projectile penetration behavior. Based on a series of ballistic impact simulations, the ballistic limit velocities of the projectile were predicted.
机译：本研究的目的是（1）验证具有复杂冲击条件的2024铝的*MAT_224模型；（2） 评估不同撞击条件下弹丸弹道极限和剩余速度的可预测性；（3）研究弹丸倾角和姿态角变化对侵彻靶板的影响。新开发的用于2024铝合金的*MAT_224模型版本2.0被用于模拟美国国家航空航天局进行的一系列弹道冲击试验，该试验使用了带有锐边和尖角的Inconel 718矩形块弹丸，以斜入射角撞击2024铝合金平板。一个完整的弹道撞击模拟模型由超过2000万个固体元素创建，用于进行大约100次弹道撞击模拟。总的来说，弹道撞击模拟显示，在弹丸残余速度、靶板失效形状和弹丸穿透行为方面，其结果与NASA的测试结果具有高度可比性。在一系列弹道撞击模拟的基础上，预测了弹丸的弹道极限速度。

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