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首页> 外文期刊>International journal of non-linear mechanics >On the impact of a rigid plastic missile into rigid or elastic target
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On the impact of a rigid plastic missile into rigid or elastic target

机译:对刚性塑料导弹撞击成刚性或弹性目标的影响

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Here we carry out a systematic parametric study of a uniform cylindrical missile impacting rigid or elastic structures. We give an analytical result for the impact force in case of rigid target. A new parameter, the damage potential is introduced and it is shown that this single dimensionless combination of the parameters describes the course of the impact in this simplest case. For elastic target structures, we also show numerically that the course of the reaction force, the maximum target displacement and the duration of the impact depend primarily on the same dimensionless parameter with a secondary effect of the missile to target mass ratio and the relative stiffness of the target. The rigid target assumption is not always conservative with regard to the reaction force due to target vibration. We find a resonant effect in the maximum target displacement as the function of the missile to target mass ratio. The motivation of our work is rooted in the investigation of aircraft fuselage impact into robust structures like the containment of a nuclear power plant.
机译:在这里,我们对撞击刚性或弹性结构的均匀圆柱形导弹进行了系统的参数研究。对于刚性目标,我们给出了冲击力的分析结果。引入了一个新的参数,即潜在的损坏,并表明在最简单的情况下,这种参数的无量纲组合描述了冲击的过程。对于弹性目标结构,我们还从数值上表明反作用力的过程,最大目标位移和冲击持续时间主要取决于相同的无量纲参数,而导弹与目标的质量比和相对刚度则具有次要作用。目标。对于由于目标振动引起的反作用力,刚性目标假设并不总是保守的。我们发现最大目标位移中的共振效应是导弹与目标质量比的函数。我们工作的动力源于对飞机机身撞击成坚固结构(如核电站的围护结构)的研究。

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