CAJ | 학술논문

基于单一薄壁金属结构具有稳定的、可控的塑性变形吸能优点及存在碰撞界面力过载缺点的现状，本文提出承载能力更高、界面力更加稳定的组合结构的设计理念，并对单层薄壁结构及双层薄壁组合结构进行有限元建模，利用非线性显示动态有限元软件LS-DYNA对其耐撞性进行分析。研究表明：在非对称变形模式下，薄壁组合结构耐撞性特性优于单层结构；对组合结构加工V型诱导槽后，其缓冲特性有较大提高，能进一步有效地控制吸能过程中的过载情况。
기우단일박벽금속결구구유은정적、가공적소성변형흡능우점급존재팽당계면력과재결점적현상，본문제출승재능력경고、계면력경가은정적조합결구적설계이념，병대단층박벽결구급쌍층박벽조합결구진행유한원건모，이용비선성현시동태유한원연건LS-DYNA대기내당성진행분석。연구표명：재비대칭변형모식하，박벽조합결구내당성특성우우단층결구；대조합결구가공V형유도조후，기완충특성유교대제고，능진일보유효지공제흡능과정중적과재정황。
Aiming at the situation that the single thin-walled metal structure has advantage of stable and controlled plastic deformation to absorb energy, but it also has the disadvantage of crash force overload, the design concept of composite structures which have higher car-rying capacity and are more stable is proposed. The finite element models of single and double thin-walled structures are created, the FEM software LS-DYNA is applied to analysis its crashworthiness. The results show that in the asymmetric deformation mode, the crashworthiness characteristics of thin-walled composite structures are better than single thin-walled structure; when the composite structures are processed V-type induced groove, its buffering property is improved greatly which can further effectively control the over-load condition in the process of energy-absorption.