Abstract
A finite element formulation is presented for conducting nonlinear analysis of fibrous composite shells structures. The Semiloof elements, which have proved to be one of the most efficient families of finite elements available for linear elastic thin shell analysis, have been extended for elasto-plastic fibrous composite shell analysis. Inelastic material behaviour is modelled with flow theory of plasticity adopting the von Mises yield criterion.
The geometry, constitutive equations and stiffness relations of the shell element represent the displacement method of analysis. Solution of the nonlinear equilibrium equations is obtained with a Newton-Raphson type iteration technique.
This paper also considers static fracture of notched composite shells based on damage zones.
Some examples are furnished to demonstrate the versatility and accuracy of presented efficient finite elements in modelling structure of aircraft applications.
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© 1983 Applied Science Publishers Ltd
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Maksimović, S. (1983). Elasto-Plastic Analysis of Fibrous Composite Shells Using ‘Semiloof’ Finite Elements. In: Marshall, I.H. (eds) Composite Structures 2. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-6640-6_13
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DOI: https://doi.org/10.1007/978-94-009-6640-6_13
Publisher Name: Springer, Dordrecht
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