Abstract
In this paper, a 3-D, 8-node and a 3-D, 20-node composite finite element are derived for finite element analysis of composite laminates based on a composite variational principle and a partial stress field. By taking three in-plane strains ∈x, ∈y , ∈xy and three transverse stresses σz, σyz, σxz as the basic variables, the continuity of the transverse stresses σz, σyz, σxz across the laminate thickness is assured a priori. A new procedure, called isofunction method, has been developed to form the partial stress field based on the assumed displacement field.
The finite element analysis of the interlaminar stresses in a three layer laminated beam subjected to bending loads is done with the composite finite elements. The results show the clear advantages of these three dimensional composite finite elements.
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© 1992 Computational Mechanics Publications
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Han, J., Hoa, S.V. (1992). Three Dimensional Composite Elements for Finite Element Analysis of Anistropic Laminated Structures. In: Advani, S.G., Blain, W.R., de Wilde, W.P., Gillespie, J.W., Griffin, O.H. (eds) Computer Aided Design in Composite Material Technology III. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-2874-2_16
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DOI: https://doi.org/10.1007/978-94-011-2874-2_16
Publisher Name: Springer, Dordrecht
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