功能梯度圆柱壳的屈曲问题  

Buckling of Functionally Graded Cylindrically Shells

作　　者：杨科 王璠[2] 

机构地区：[1]中国航天科工集团六院,内蒙古呼和浩特010010 [2]暨南大学力学与土木工程系//重大工程灾害与控制教育部重点实验室,广东广州510632

出　　处：《中山大学学报（自然科学版）》2008年第S2期9-13,共5页Acta Scientiarum Naturalium Universitatis Sunyatseni

基　　金：国家自然科学基金资助项目(10572054);教育部科学技术研究重点资助项目(106156)

摘　　要：功能梯度材料是21世纪最有发展前景的新型材料之一,通过材料组份的梯度变化使其具有特殊的力学、热学特性。近年来,功能梯度材料与结构的研究已引起国际学术界广泛关住。对功能梯度圆柱壳的屈曲问题进行了研究。建立了功能梯度圆柱壳的几何方程、本构方程、平衡方程,得到了该圆柱壳的临界屈曲荷载,并对产生屈曲的因素进行了分析讨论。Functionally graded materials(FGMs) are microscopically inhomogeneous composites usually made from a mixture of metals and ceramics.By gradually varying the volume fraction of the constituent materials,their material properties exhibit a smooth and continuous change with respect to the spatial location,thus void of interface problems that are usually associated with fibre-reinforced composites and with less severe thermal stress concentrations.FGMs are now developed for general use as structural component.In recent years,the study about structures of functionally graded materials is a focus in the world.In this paper,buckling of functionally graded cylindrical shells is investigated.The equilibrium equations,geometrical quations,constitutive model are developed.The critical buckling loads of the shell are obtained with special elastic modulus.

关 键 词：功能梯度 圆柱壳 临界屈曲荷载 

分 类 号：TB34[一般工业技术—材料科学与工程]