STRUCTURAL DESIGN AND OPTIMIZATION OF FUNCTIONALLY GRADED MATERIAL ENERGY ABSORBING BOX
ZHANG QingYong
WANG YuChao
WANG Hui
Abstract：The structure design of traditional energy absorbing box has some shortcomings,such as failure to realize stable and orderly folding and collapsing during collision and poor energy-absorbing ability in unit mass,which limits the improvement of automobile safety performance.The aluminum alloy was added into the traditional 316L stainless steel composition to form a functionally graded material(FGM)structure of the energy obsorbing box,and the cross section was optimized to be a stick insect tibia cross-sectional structure.The cross section of the energy absorbing box is then optimized by multiple objectives based on the optimized Latin hypercube experimental design and response surface model.The results show that the optimized bionic functionally graded energy absorbing box can be folded and collapsed stably from head to tail.In addition,the energy-absorbing effect in unit mass was also improved as compared to the traditional energy absorbing box.The results indicate that the damage of the car body in collision can be effectively weakened by the FGM and bionic designed energy absorbing box.
Keywords：Energy absorbing boxFGM structureBionic cross sectionGeometry designMulti-objective optimization
Publication Date：2024-04-15
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：10( 371-380 )