内凹蜂窝圆柱壳结构的轴向变形分析  

Analysis of axial deformation of re-entrant honeycomb cylindrical structure

作　　者：马南芳 邓庆田[1] 温金鹏[2] MA Nanfang;DENG Qingtian;WEN Jinpeng(School of Science,Chang an University,710064 Xi'an,China;Institute of Systems Engineering,China Academy of Engineering Physics,621900 Mianyang,China)

机构地区：[1]长安大学理学院,西安710064 [2]中国工程物理研究院总体工程研究所,绵阳621900

出　　处：《应用力学学报》2024年第5期1052-1058,共7页Chinese Journal of Applied Mechanics

基　　金：国家自然科学基金委员会-中国工程物理研究院NSAF联合基金资助(No.U1930204)。

摘　　要：基于平面内凹蜂窝理论建立了曲面内凹蜂窝圆柱壳模型,研究了曲面内凹蜂窝单元在轴向受力下的变形。利用能量法得到了单元在轴向受力下的变形表达式,根据变形表达式得到单元弹性模量。考虑了内凹蜂窝单元的轴向高度、径向宽度以及单元杆件的高宽比对弹性模量的影响。对以上参数进行了理论计算与有限元仿真,将所得结果进行对比与分析,可以得到以下结论:内凹蜂窝圆柱壳在轴向受力下弹性模量随单元轴向高度和杆件高宽比的增大而增大,随单元径向宽度增大而减小。Based on the theory of re-entrant honeycomb in plane,the spatial re-entrant honeycomb cylindrical shell model is established in this paper,and deformation of spatial re-entrant honeycomb under axial stress is studied by using the energy method.According to the deformation expression,the elastic modulus can be obtained,and height,radial width and ratio of height to width of re-entrant honeycomb may affect its elastic modulus.The above parameters are calculated theoretically and simulated by finite element method,by comparing and analyzing the obtained results,the following conclusions can be obtained:under axial stress state,the elastic modulus of the honeycomb cylindrical shell increases with the increase of axial height and height to width ratio of rod,and decreases with increase of radial width.

关 键 词：内凹蜂窝 圆柱壳 椭圆曲杆 轴向变形 弹性模量 

分 类 号：O342[理学—固体力学]