In-Plane and Out-of-Plane Mechanical Properties of Zero Poisson’s Ratio Cellular Structures for Morphing Application  

用于变体机翼的零泊松比胞状结构面内和面外力学性能

作　　者：SONG Leipeng LI Qiang WANG Hongjie WANG Taoxi NIE Xiaohua KONG Xiangsen SHEN Xing 宋雷鹏;李强;王泓杰;王韬熹;聂小华;孔祥森;沈星(南京航空航天大学机械结构力学及控制国家重点实验室,南京210016;北京航天长征飞行器研究所,北京100048;中国飞机强度研究所计算结构技术与仿真中心,西安710065)

机构地区：[1]State Key Laboratory of Mechanics and Control of Mechanical Structures,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,P.R.China [2]Beijing Institute of Space Long March Vehicle,Beijing 100048,P.R.China [3]Computational Structure Technique&Simulation Center,Aircraft Strength Research Institute of China,Xi’an 710065,P.R.China

出　　处：《Transactions of Nanjing University of Aeronautics and Astronautics》2022年第3期326-337,共12页南京航空航天大学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.11872207);the Aeronautical Science Foundation of China (No. 20180952007);the Foundation of National Key Laboratory on Ship Vibration and Noise(No.614220400307);the National Key Research and Development Program of China (No.2019YFA708904)。

摘　　要：Intelligent structures like zero Poisson’s ratio(ZPR)cellular structures have been widely applied to the engineering fields such as morphing wings in recent decades,owing to their outstanding characteristics including light weight and low effective modulus. In-plane and out-of-plane mechanical properties of ZPR cellular structures are investigated in this paper. A theoretical method for calculating in-plane tensile modulus,in-plane shear modulus and out-of-plane bending modulus of ZPR cellular structures is proposed,and the impacts of the unit cell geometrical configurations on in-plane tensile modulus,in-plane shear modulus and out-of-plane bending modulus are studied systematically based on finite element(FE)simulation. Experimental tests validate the feasibility and effectiveness of the theoretical and FE analysis. And the results show that the in-plane and out-of-plane mechanical properties of ZPR cellular structures can be manipulated by designing cell geometrical parameters.零泊松比(Zero Poisson’s ratio,ZPR)胞状结构等智能结构因其重量轻、有效模量低的突出特点,在变形翼等领域的应用逐渐兴起。本文研究了ZPR胞状结构的面内和面外力学性能,提出了计算ZPR胞状结构的面内拉伸模量、面内剪切模量和面外弯曲模量的理论方法,分析了蜂窝结构几何构型对其面内、面外力学性能的影响。在有限元模拟的基础上,系统地研究了面内拉伸、剪切模量和面外弯曲模量。实验验证了理论分析和有限元分析的可行性和有效性。结果同时表明,通过设计胞体几何参数可以控制ZPR胞状结构的面内和面外力学。

关 键 词：cellular structure zero Poisson’s ratio(ZPR) mechanical properties parameter design morphing application 

分 类 号：O342[理学—固体力学]