Maximization of the crushing energy absorption of cylindrical shells
Advances in Engineering Software - design optimization
Optimal crashworthiness design of a spot-welded thin-walled hat section
Finite Elements in Analysis and Design
Design optimization of regular hexagonal thin-walled columns with crashworthiness criteria
Finite Elements in Analysis and Design
A comparative study of metamodeling methods for multiobjective crashworthiness optimization
Computers and Structures
Structural and Multidisciplinary Optimization
Multiobjective reliability-based optimization for design of a vehicledoor
Finite Elements in Analysis and Design
Multiobjective optimization design for vehicle occupant restraint system under frontal impact
Structural and Multidisciplinary Optimization
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Thin-walled columns play an important role on passenger safety in vehicular collisions for their progressive deformation patterns and large energy absorptions. A thin-walled column with a large specific energy, i.e., the ratio of energy absorption to its mass, is often desirable to the automotive industry, because such designs could enhance safety and reduce manufacturing cost. Due to the complexity of crash mechanism, obtaining such designs has been a challenge to the trial-and-error approach using physical prototype testing. To this end, combining finite element simulations with optimization methodologies has become the viable means to meet the challenge. In this paper, single- and triple-cell hexagonal columns filled with aluminum foams were optimized for maximum specific energy with simultaneous consideration of section geometry, tube thickness, and foam density. The effects of crushing forces on column designs were analyzed by comparing optimum solutions with and without constraints on the mean crushing forces. The interaction effects between the tube and foam of composite columns and the relative advantages of single- and triple-cell structures were investigated and discussed.