Numerical study on crashworthiness of sandwich structures under impact loads

The crashworthiness and structural responses of corrugated sandwich structures under lateral impact are simulated in the FE (finite element) analysis. The rectangular indenter is adopted for considering the bow of barge. The influence of dimension and shape of inner core on the structural and crashworthiness are discussed. The connect method between plate and inner core is also considered to understand their influence for finding a convenient manufacture that would not significantly reduce structural performance. It is found that the sandwich structure with triangular core can effectively reduce the peak value of impact force, and it also shows good ability of resistance deformation.