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The Laplace transformation has been applied for analyzing viscoelastic behaviors of composite laminated shells. The constitutive equation in integral can be reduced to linear stress-strain relationship in Laplace domain. Therefore, the formulation such as displacement field, can be expressed similarly with elastic one. In order to describe accurately the viscoelastic behaviors of laminated shells, the efficient higher-order shell theory (EHOST) has employed. The general tensor formulation is used for accurate description and arbitrary shell. The time-dependent results of strain, stress distributions through the thickness of the shell are obtained by converting back to real time domain for creep and relaxation process.

Laplace transform, viscoelastic, composite laminated shell, efficient higher-order theory