【作者】 徐新生； 李澄； 林志华； 吕坚；

【Author】 XU Xin-sheng;LI Cheng;LIM Chee-Wah;LU-Jian;State Key Laboratory of Structural Analysis for Industrial Equipment and Department of Engineering Mechanics,Dalian University of Technology;Department of Civil and Architectural Engineering,City University of Hong Kong;

【机构】 大连理工大学工程力学系和工业装备结构分析国家重点实验室； 香港城市大学土木与建筑工程系；

【摘要】 本文通过把材料的表面纳米技术引入薄壁吸能结构设计中,实现在其受冲击下诱导薄壁管屈曲模态和屈曲发展路径的目的,从而完成一种新的诱导薄壁管屈曲模态方法的构想。结果表明这种方法不仅可诱导了稳定渐进紧凑的屈曲模态,而且使其吸能性能有较大的提高。结果还表明,所诱导的屈曲模态的和吸能性能与局部纳米化区域的形状,尺寸和布局等有关。这种方法和技术为吸能结构的设计提供了原理和依据。更多还原

【Abstract】 Based on the technique of surface self-nanocrystallization on the thin-walled tubes,a new method is presented for inducing buckling modes and development paths of buckling of the tubes under impact loads.The results show that,this method not only can induce steady progressive buckling modes,but also can improve greatly the energy-absorbing properties.Results also reveal that the inducing buckling mode and energy absorption performance are associated with the region shape,size and distribution of the local surface self-nanocrystallization.The method and technology can provide a principle and reliable basis for the design of absorbing energy structures.更多还原