Linear versus nonlinear theories for laminated composite plates and shells
- Franklin Univ., Columbus, OH (United States)
Linear and nonlinear shear-deformation theories for laminated composite plates and shells are discussed in this paper. The emphasis here is on the range of validity for each class of theories. The finite element method is used to determine the maximum stresses for a wide range of statically loaded plate and shell panels with various thickness ratios. This paper concludes that for the vast majority of composite materials and for moderately thick plates and shells, stresses normally reach the maximum allowable stress before nonlinear terms can become important. This has been demonstrated by showing that for the limiting case of shear deformation theories (in which the minimum span length (or radius) to thickness ratio is 20), the material usually fails before the maximum deflection reaches the magnitude of the thickness (where nonlinear terms start to become significant).
- OSTI ID:
- 122517
- Report Number(s):
- CONF-950740-; ISBN 0-7918-1333-9; TRN: IM9547%%97
- Resource Relation:
- Conference: Joint American Society of Mechanical Engineers (ASME)/Japan Society of Mechanical Engineers (JSME) pressure vessels and piping conference, Honolulu, HI (United States), 23-27 Jul 1995; Other Information: PBD: 1995; Related Information: Is Part Of Composites for the pressure vessel industry. PVP-Volume 302; Bees, W.J.; Newaz, G.M.; Narita, Yoshihiro; Takezono, S.; Qatu, M.S.; Hirano, T.; Miyazaki, N.; Nakagaki, M. [eds.]; PB: 312 p.
- Country of Publication:
- United States
- Language:
- English
Similar Records
An efficient model for nonlinear analysis of laminated composite panels containing damage
Laminated composite three dimensional curved shell element based on piecewise hierarchical p-version displacement approximation for geometrically non-linear behavior of laminated plates and shells