Shape optimisation and buckling analysis of large strain zero Poisson’s ratio fish-cells metamaterial for morphing structures

This article investigates the potential of a large strain morphing skin based on Zero Poisson’s Ratio (ZPR) Fish-Cells metamaterial. A multi-objective genetic algorithm shape optimisation is performed to improve ZPR characteristics High-fidelity finite element models are developed assess performance optimised metamaterial for non-linear strains. detailed joint design study devised obtain consistent behaviour over maximum range. Trends ratio, effective elastic modulus and von-mises stress different geometries discussed in detail. Results provide valuable insight into Furthermore, experimental investigations conducted verify enhanced mechanical samples. Linear buckling analysis under compressive loads. Finally, preliminary evaluate as candidate aircraft wing.