TY  - JOUR
AB  - Purpose Negative Poisson’s ratio (NPR) material has huge potential applications in various industrial fields. However, lower Young’s modulus due to the porous form limits its further applications. Based on the topology optimization technique, this paper aims to optimize the structure consisting two isotropic porous materials with positive Poisson’s ratio (PPR) and NPR and void.Design/methodology/approach Under prescribed dual-volume fraction constraints, the structural compliance is taken as the objective. Young’s modulus and Poisson’s ratio are, respectively, interpolated and expressed with Lamé’s parameters for easier programming. Accordingly, the sensitivities can be derived through the chain rule. Several two- and three-dimensional illustrative examples are presented to demonstrate the capability and effectiveness of the proposed approach. The influences of Poisson’s ratios, volume fractions and Young’s moduli on the optimized results are investigated.Findings For NPR materials having unique load responses, the resulting topologies of PPR and NPR materials have distinct material distributions in comparison of the results from two PPR materials. Furthermore, it is observed that higher structural stiffness can be achieved from the hybrid of PPR and NPR materials than that obtained from the structures made of individual constituent materials.Originality/value A topology optimization methodology is proposed to design structures composed of PPR and NPR materials.
VL  - 37
IS  - 5
SN  - 0264-4401
DO  - 10.1108/EC-06-2019-0291
UR  - https://doi.org/10.1108/EC-06-2019-0291
AU  - Jia Jiao
AU  - Hu Jianxing
AU  - Wang Yongbin
AU  - Wu Shiqing
AU  - Long Kai
PY  - 2020
Y1  - 2020/01/01
TI  - Structural topology optimization with positive and negative Poisson’s ratio materials
T2  - Engineering Computations
PB  - Emerald Publishing Limited
SP  - 1805
EP  - 1822
Y2  - 2024/04/20
ER  -