Author(s)

J. Han & K. Yamazaki

Abstract

Maximization of the impact energy absorption of stiffened and unstiffened square tubes J. Han & K. Yamazaki Department of Human and Mechanical Systems Engineering, Japan Abstract The axial impact crushing behaviors of square tubes with and without stiffeners are studied by Finite Element method. Comparisons of mean axial crushing force between numerical estimations and theoretical predications as well as qualita- tive comparisons of folding patterns between numerical simulations and experi- mental observations are made and discussed. Based on the numerical analyses, maximization problems of dynamic crushing energy absorption of square tubes with and without stiffeners are solved respectively by using the crashworthiness maximization technique for tubular structures which combined the techniques of design-of-experiment, response surface approximation as well as usual math- ematical programming. In addition, the capacities of crushing energy absorption of cylindrical tubes and square tube

Keywords