Continuous twice-impacts analysis of UHMWPE laminate fixed with bolted joints
Continuous twice-impacts analysis of UHMWPE laminate fixed with bolted joints
复制标题
用螺栓连接固定的 UHMWPE 层压板的连续两次冲击分析
DOI：
10.1016/j.ijimpeng.2017.07.013
复制
发表时间：
2017-11
影响因子：
5.1
通讯作者：
Han Xu
中科院分区：
文献类型：
--
作者：
Shen Zhiwei;Hu Dean;Zhang Youmin;Cai Qingyu;Han Xu
在实际工程中，连续多冲击的相关参数通常是模糊的。本文对采用4个螺栓连接固定的超高分子量聚乙烯（UHMWPE）层压板进行了连续二次冲击的设计和实验模拟。利用首次冲击实验结果验证了固体钝体弹丸以216 m/s的速度穿透层压板的数值模型。实验和仿真结果表明，采用螺栓连接固定的超高壁聚乙烯靶在二次冲击时存在较强的侧向效应，在此基础上研究了螺栓孔的变形响应，讨论了二次非侵彻冲击的参数识别，即基于反问题模型识别二次侵彻速度和冲击位置。最后，用识别参数计算的数值结果与二次冲击试验结果吻合较好。本文的研究方案对认识多影响过程具有重要意义。
Generally, the relative parameters of continuous multi-impacts are ambiguous in the practical engineering. In this paper, continuous twice-impacts of Ultra-High Molecule Weight Polyethylene (UHMWPE) laminate which is fixed by four bolted joints are designed and conducted by experiment and simulation. The experimental results of first impact are used to verify the numerical model, in which a solid blunt projectile penetrates the laminate with the velocity of 216 m/s. The obtained results of experiment and simulation indicate that strong lateral effects can be observed for the twice-impacts of UHMWPE target fixed with bolted joints, then the deformation responses of bolt holes are studied to discuss parameters identification of secondary non-penetration impact, i.e., the velocity and impact position of secondary penetrator are identified based on inverse problem model. Finally, the numerical results calculated with the identification parameters are in good agreement with the twice-impacts test. The research scheme of this paper is significant to recognize the process of multi-impacts.
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DOI：
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发表时间：
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期刊：
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