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低碳钢夹层结构在局部冲击载荷作用下的能量吸收性能研究。

Study of Mild Steel Sandwich Structure Energy Absorption Performance Subjected to Localized Impulsive Loading.

作者信息

Alqwasmi Nouman, Tarlochan Faris, Alkhatib Sami E

机构信息

Department of Mechanical and Industrial Engineering, College of Engineering, Qatar University, P.O. 271, Doha, Qatar.

Qatar Transportation and Traffic Safety Center, College of Engineering, Qatar University, P.O. 271, Doha, Qatar.

出版信息

Materials (Basel). 2020 Feb 3;13(3):670. doi: 10.3390/ma13030670.

DOI:10.3390/ma13030670
PMID:32028584
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7040664/
Abstract

Extensive research focus had been given to sacrificial sandwich panels to mitigate the effects of blast loads. This is due to their ability to distribute the load and absorb a significant portion of the blast energy. This paper studies the behavior of sacrificial sandwich mild steel panels of axially oriented octagonal tapered tubular cores subjected to near-field impulsive blast. The deformation behavior and several assessment parameters consisting of the peak force, stroke efficiency, energy absorption and core efficiency were investigated using validated finite element analysis. The developed deformation modes were mainly influenced by the top plate and tube thickness. Tubes of a 5° taper performed unfavorably, exhibiting increased peak force and lower energy absorption. Panels of top plate thickness of 4 mm exhibited higher stroke efficiency as compared to panels of lower thickness. The top plate and tube thickness significantly affected energy absorption. An increase of 73.5% in core efficiency was observed in thick-plate panels as compared to thin-plate ones.

摘要

为减轻爆炸载荷的影响，人们对牺牲式夹层板进行了广泛的研究。这是因为它们能够分散载荷并吸收大部分爆炸能量。本文研究了轴向定向八边形锥形管状芯的牺牲式夹层低碳钢板在近场脉冲爆炸作用下的行为。使用经过验证的有限元分析研究了变形行为以及包括峰值力、行程效率、能量吸收和芯效率在内的几个评估参数。所形成的变形模式主要受顶板和管材厚度的影响。5°锥度的管材表现不佳，峰值力增加且能量吸收降低。与较薄厚度的面板相比，顶板厚度为4mm的面板表现出更高的行程效率。顶板和管材厚度对能量吸收有显著影响。与薄板面板相比，厚板面板的芯效率提高了73.5%。

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Study of a Steel's Energy Absorption System for Heavy Quadricycles and Nonlinear Explicit Dynamic Analysis of its Behavior under Impact by FEM.重型四轮车钢质能量吸收系统的研究及其在有限元冲击下行为的非线性显式动力学分析。
Materials (Basel). 2015 Oct 10;8(10):6893-6908. doi: 10.3390/ma8105345.
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Materials (Basel). 2020 Sep 3;13(17):3903. doi: 10.3390/ma13173903.