Postbuckling of Marine Stifened Composite Plates with Initial Geometric Imperfections Using Progressive Failure Analysis

作     者：Fattaneh Morshedsolouk Madjid Karimirad Fattaneh Morshedsolouk;Madjid Karimirad

作者机构：Faculty of Mechanical EngineeringBabol NoshirvaniUniversity of Technology47148–73113 BabolIran School of Natural and Built EnvironmentQueen’s UniversityBelfast(QUB)Belfast BT95AGUK 

出 版 物：《Journal of Marine Science and Application》 (船舶与海洋工程学报（英文版）)

年 卷 期：2021年第20卷第4期

页      面：694-705页

核心收录：

学科分类：0707[理学-海洋科学] 08[工学] 0815[工学-水利工程] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0824[工学-船舶与海洋工程] 0802[工学-机械工程] 0801[工学-力学（可授工学、理学学位）] 

主　　题：Initial geometric imperfection Laminated composite plate Postbuckling behavior Nonlinear fnite element method Progressive damage method Hashin damage criteria 

摘      要：This work explores the postbuckling behavior of a marine stifened composite plate in the presence of initial *** imperfection shapes are derived from buckling mode shapes and their ***,these imperfection shapes are applied to the model,and nonlinear large defection fnite element and progressive failure analyses are performed in ANSYS 18.2 *** Hashin failure criterion is employed to model the progressive failure in the stifened composite *** efect of the initial geometric imperfection on the stifened composite plate is investigated by considering various imperfection patterns and *** show that when the magnitude of the imperfection is 20 mm,the ultimate strength of the stifened composite plate decreases by 31%.Moreover,global imperfection shapes are found to be fundamental in determining the ultimate strength of stifened composite plates and their postbuckling.