Transactions of Nanjing University of Aeronautics & Astronautics
In-Plane and Out-of-Plane Mechanical Properties of Zero Poisson’s Ratio Cellular Structures for Morphing Application
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Abstract:
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.
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This work was 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）， and the National Key Research and Development Program of China （No.2019YFA708904）.
Clc Number:
O342
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