Accurate equations for laminated composite deep thick shells

This paper derives accurate equations of elastic deformation for laminated composite deep\ thick shells[ The equations include shells with a pre!twist and accurate force and moment resultants which are con! siderably di}erent than those used for plates[ This is due to the fact that the stresses over the thickness of the shell have to be integrated on a trapezoidal!like cross!section of a shell element to obtain the stress resultants[ Numerical results are obtained and showed that accurate stress resultants are needed for laminated composite deep thick shells\ especially if the curvature is not spherical[ A consistent set of equations of motion\ energy functionals and boundary conditions are also derived[ These may be used in obtaining exact solutions or approximate ones like the Ritz or _nite element methods