3-D stress analysis of cross-ply laminated composites
- National Tsing Hua Univ., Hsinchu (Taiwan, Province of China). Dept. of Power Mechanical Engineering
A consistent higher-order theory is presented for static deformation and stress analysis of cross-ply thick laminates. Emphasis is placed on consistence with the 3-D boundary conditions and interlaminar stress continuity, exterior and interior, respectively, to the simply supported rectangular plate. All edges and lateral surfaces are considered stress-free, while surface traction and applied load equilibrium is maintained in the loading area. Individual layer displacement fields are expressed in terms of in-plane double Fourier series and cubic polynomials in thickness coordinate with continuity of interlaminar displacements and transverse stresses observed. A system of equations is derived with all these necessary conditions satisfied by means of the higher-order terms of the displacement fields in the extended Rayleigh-Ritz procedure. 3-D displacement and stress components, as compared well with exact solution cases available, can be found throughout the plate for 3-D analysis of localized damage. Thicknesses shrinking is noted with no mid-surface symmetry of stress distribution.
- OSTI ID:
- 6909487
- Journal Information:
- Journal of Energy Resources Technology; (United States), Journal Name: Journal of Energy Resources Technology; (United States) Vol. 116:3; ISSN 0195-0738; ISSN JERTD2
- Country of Publication:
- United States
- Language:
- English
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