Mechanical properties of corrugated structure with negative Poisson’s ratio and its application on energy absorbing box based on parametric modeling method

Abstract

A novel corrugated structure is proposed owing to its "compression-contraction" negative Poisson’s ratio characteristics. Firstly, theoretical predictions of Poisson's ratio, elastic modulus and platform stress for corrugated structure are derived. Then, finite element models of corrugated structure are established by utilizing parametric modeling approach based on secondary development of Abaqus. Moreover, quasi-static compression test of corrugated structure is executed to verify the accuracy of theoretical predictions and parametric models. Subsequently, the influences of geometric parameters and various base material combinations on mechanical properties of corrugated structure are investigated, and the optimal base material combination Al-ABS is obtained. Afterwards, impact performances of Al-ABS corrugated structure under various impact velocities and impact angles are studied, and deformation modes, stress-strain curves and specific energy absorptionSEAare acquired. In addition, the accuracy and reliability of the FEM of energy absorbing box embedded with corrugated structure is verified through energy curves and quasi-static compression test on 3D printed energy absorbing box. Finally, multi-objective optimization design on energy absorbing box embedded with Al-ABS corrugated structure is performed with design variables of θ,r1,r2,d and optimization objectives of minimum massMs, minimum peak crushing forcePCF and maximum energy absorption EA by employing NSGA III algorithm. Compared with un-optimized corrugated structure energy absorbing box, the MsandPCFof post-optimized box decrease by 1.31%, 13.98%, accordingly, and the EA and SEA of post-optimized box increase by 10.86% and 12.33%, separately.