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The analysis of shells structure represents one of the most challenging fields in many applications. This work presents the linear and nonlinear analysis of thin shell structures based on finite element eight nodes degenerated shell element which have five degrees of freedom per each node. A geometric nonlinear formulation based on the total Lagrangian formulation and using both geometric strains (Engineering Strains) and Greens strains was adopted in this work and the formulations were implemented into a nonlinear finite element program NONLAS. The solution of nonlinear equations is obtained by combining a stepbystep incremental/iterative procedure and the Modified NewtonRaphson method. The capability of the formulation is demonstrated by numerical examples and the results are compared with available solutions.
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