Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : March 03, 2018
In previous research, it was reported that the elastic properties, particularly the flexural modulus, of the woven fabric composite laminate sharply decreases, especially when its number of laminated layers is reduced to a few layers, due to the intralaminar inhomogeneity which is caused by the architecture of interwoven yarns. In this study, buckling properties of the woven fabric composite laminate with a delamination under uniaxial compression load are investigated through finite element analyses. The influence of the reduction of elastic properties at the locally delaminated portion on the buckling load of the laminate is investigated. Two types of delamination are investigated, (i) delamination across the entire width of the laminate, and (ii) delamination locally introduced at the center of the laminate. Through the numerical investigations, it is found that the reduction of the elastic modulus at the delaminated portion can cause a significant reduction of the buckling load of laminate.
