Maximization Of The Impact Energy Absorption Of Stiffened And Unstiffened Square Tubes
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
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