Solutions to intra-ply shear locking in finite element analyses of fibre reinforced materials

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Thije, R.H.W. ten and Akkerman, R. (2008) Solutions to intra-ply shear locking in finite element analyses of fibre reinforced materials. Composites Part A: Applied Science and Manufacturing, 39 (7). pp. 1167-1176. ISSN 1359-835X

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Abstract:Intra-ply shear locking results in unrealistic fibre stresses and spurious wrinkling in composite forming simulations. Three remedies were investigated: aligning the mesh, applying reduced integration and using multi-field elements. Several triangular and quadrilateral elements were tested on their capability to avoid locking in a two-dimensional bias extension simulation. The resulting locking-free elements were tested in a realistic three-dimensional drape simulation of a biaxial fabric as well. The new triangular multi-field element seems to be the best locking-free element for unaligned meshes. It has a semi-quadratic in-plane and a linear out-of-plane displacement field. This combination improves the accuracy of the element and avoids contact problems in 3D simulations.
Item Type:Article
Copyright:© 2008 Elsevier
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Engineering Technology (CTW)
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Link to this item:http://purl.utwente.nl/publications/75447
Official URL:http://dx.doi.org/10.1016/j.compositesa.2008.03.014
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Metis ID: 254044