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Nodal Constraint, Shear Deformation and Continuity Effects Related to the Modeling of Debonding of Laminates, Using Plate Elements

E. H. Glaessgen1, W.T. Riddell2, I. S. Raju1
NASA Langley Research Center, Hampton, VA 23681
Volpe National Transportation Systems Center, Cambridge, MA 02142

Computer Modeling in Engineering & Sciences 2002, 3(1), 103-116. https://doi.org/10.3970/cmes.2002.003.103

Abstract

The effects of several critical assumptions and parameters on the computation of strain energy release rates for delamination and debond configurations modeled with plate elements have been quantified. The method of calculation is based on the virtual crack closure technique (VCCT), and models of the upper and lower surface of the delamination or debond that use two-dimensional (2D) plate elements rather than three-dimensional (3D) solid elements. The major advantages of the plate element modeling technique are a smaller model size and simpler configurational modeling. Specific issues that are discussed include: constraint of translational degrees of freedom, rotational degrees of freedom or both in the neighborhood of the debond front; shear deformation assumptions; and continuity of material properties and section stiffness in the vicinity of the debond front. Where appropriate, the plate element analyses are compared with corresponding two-dimensional plane strain analyses.

Cite This Article

Glaessgen, E. H., Riddell, W., Raju, I. S. (2002). Nodal Constraint, Shear Deformation and Continuity Effects Related to the Modeling of Debonding of Laminates, Using Plate Elements. CMES-Computer Modeling in Engineering & Sciences, 3(1), 103–116.



This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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