3D Non-linear Analysis of Interlaminar Stress around the Hole Edge of Orthotropic Laminates

J. Ocean Eng. Technol. 2004;18(5):36-42.

SONG KWAN-HYUNG

직교이방성 적층판의 Hole단부의 3D 비선형 층간응력 해석

송관형

충남대학교 선박해양공학과

Keywords: Orthotropic, Laminate, Pin Joint, Delamination, Interlaminar Stress

핵심용어: 직교이방성, 적층판, 핀접합, 층간분리, 층간응력

Abstract

Orthotropic laminates, such as [$0^{circ}6$/$90^{circ}6$]s and [$90^{circ}6$/$0^{circ}6$]s, were performed, using a commercial nonlinear finite element method. Interlaminar stress distributions, around the hole curve free-edge, were calculated. The delamination bearing strengths of pin joints were predicted, using the modified delamination failure criterion. These stress distributions were presented along the radial lines and around the free-edge of the hole. Further, three-dimensional non-linear contact analysis of orthotropic laminates was conducted to investigate the effect of friction. In this paper, laminates with a circular hole were taken to study interlaminar stresses the curved edge. This study may assist in the design of a thick composite laminate with mechanically pin joints.