点击次数：

论文类型：期刊论文

发表时间：2014-03-04

发表刊物：JOURNAL OF THERMAL STRESSES

收录刊物：SCIE、EI、Scopus

卷号：37

期号：3

页面范围：340-362

ISSN号：0149-5739

关键字：Cylindrical shell; Buckling; FGMs; Axial compression; Symplecticity

摘要：This article focuses on analytical solutions for bifurcation buckling of FGM cylindrical shells under thermal and compressive loads. A new solution methodology is established based on Hamilton's principle. The fundamental problem is subsequently transformed into the solutions of symplectic eigenvalues and eigenvectors, respectively. Then, by applying a unidirectional Galerkin method, imperfection sensitivity of an imperfect FGM cylindrical shell is discussed in detail. The solutions reveal that boundary conditions, volume fraction exponent, FGM properties, and temperature rise distribution significantly influence the buckling behavior. Critical stresses are reduced greatly due to the existence of initial geometric imperfections.