Multi-objective optimisation of functionally graded honeycomb filled crash boxes under oblique impact loading

摘要: Tubular forms of crash elements such as boxes are widely applied in transportation industries, especially automobile industry. A box is an element used the frontal zones, generally inserted between chassis and bumper to reduce amount energy that transmitted rest front safety zones. In this paper, first, square section filled with functionally graded honeycomb (FGH) subjected oblique impact loading presented objective improve crashworthiness. Then, some optimisation tools weighted average method, geometrical multi-design technique utilised optimise structures. The results reveal crashworthiness FGH structures exposed improved, also proves its superiority respect uniform Finally, metallic density exponent gradient properly determined.