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A Basic Study of Crashworthiness Optimization Using Homogenization Method(II)  

조용범 (서울대학교 기계항공공학부 대학원)
신효철 (서울대학교 기계항공공학부)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.10, no.4, 2002 , pp. 181-191 More about this Journal
Abstract
The homogenization method is applied to maximize crash energy absorption for a given volume. Optimization analysis off closed-hat type example problem is conducted with different impact velocities and thicknesses. The results show that the bending-type deformation for the original design is changed to the folding-type deformation for a new design with a hole, which is partly due to the increase of the crash energy absorption for the new design. Dynamic mean crushing loads of the original and new design are compared with those by the theoretical equation by Wierzbicki. It shows that the dynamic mean crushing loads of new designs are very close to those by Wierzbicki's equation.
Keywords
Homogenization method; Internal energy; Optimization; Dynamic mean crushing load; Bending deformation; Axial crushing deformation;
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