付加円孔による有円孔CFRPアングルプライ積層平板の応力集中緩和

概要

論文の詳細を見る
Thin plate structural members often have cutouts for weight saving or from the structural requirement. The presence of cutouts in the plate causes stress concentration. So it is important in the design of structural members to relax the stress concentration. However, there are few studies about the relaxation of stress concentration in FRP plate. This paper presents effective parameters for relaxing the stress concentration in the CFRP plate with a centrally located hole accompanied by two additional holes. The calculation of stress distribution in CFRP plates is carried out by using FEM. The present study clarified several effects on the relaxation of stress concentration, such as, hole size, pitch of hole and lamination angle. Further, it was found that the relaxation of stress concentration by providing additional hole on angle-ply lamination is effective from the result of failure strength analysis.
東海大学の論文