Buckling and Postbuckling Study of Delaminated Circular Arch

• Main Authors: Jin-Zen Shih, 施濬哲
• Other Authors: Chiou-Shui Lee
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/18315635951780126358

碩士 === 國立臺灣海洋大學 === 河海工程學系 === 97 === Laminated circular arches possess great strength-to-weight ratio and good resistance to corrosion, and therefore have been widely used in a variety of engineering fields. The major problem encountered in the application of such composite structure is attributable to separation of adjoining plies commonly called delamination. This drawback of material largely arises from manufacturing imperfection or impact loading, and inevitable leads to reduction in the stiffness and resistance strength. Buckling and postbuckling of delaminated circular arches are investigated in this work to accurately predict the load capacity. On the basis of geometrically nonlinear finite element method and perturbation technique, postbuckling equilibrium paths are obtained as a number of asymptotic expansions of a gauge parameter. Several support conditions are considered for numerical studies.