抄録
In this study, the elastic-viscoplastic properties of ultra-fine plate-fin structures with random laminate misalignment are investigated using the time-dependent homogenization theory in conjunction with the substructure method. For this, a unit cell of a plate-fin structure with randomly misaligned N layers is defined. The Y-periodic boundary condition is used on the side boundary surfaces of the unit cell. On the other hand, the boundary condition for periodic laminate misalignment proposed by the authors is applied on the top and bottom boundary surfaces. The unit cell is then divided into N substructures for applying the time-dependent homogenization theory combined with the substructure method to the elastic-viscoplastic analysis of the random plate-fin structure. Using the present method, elastic-viscoplastic behavior of ultra-fine plate-fin structures with randomly misaligned 10-100 layers is analyzed. It is shown that the random laminate misalignment can significantly affect the elastic-viscoplastic properties of plate-fin structures.
