Nonlinear Stability Of Laminated And Functionally Graded Composite Shallow Spherical Shell

Composite is made from different and antipathic materials which can be designed as needed to work together to achieve the anticipant function. As the high-speed development of the composite materials, it is used widely in many engineering structures since 1960's because it's advantage capabilities of light weight, high strength, high modulus, acid-resistant and alkalescence-resistant. And researchers on mechanical characters has gained more and more attention recently.Now the research on linear mechanical characters of composite plate-shell structures is much .Because of the difficulty of solving nonlinear mathematical problems, there is severl research on nonlinear ones. As more and more new composites were produced, of which the study on nonlinear characters is more and more significative.In this paper , composite laminated cylindrically orthotropicb shallow spherical shells are done on the linear-load .The govering equation of stability is established based on nonlinear geometry .The effects of transverse shear eformationg are taken into...