Summary
We consider two multiphysics problems in geomechanics with constraints. The first involves coupled solid deformation–fluid diffusion subject to a volume constraint in the limit of no-flow. The second is the classic contact problem subject to a no-interprenetration constraint. Both problems are known to generate unphysical oscillation in the pressure field when some combinations of displacement and pressure finite element interpolations are employed. We trace the problem to the non-satisfaction of the LBB condition and utilize a stabilization technique based on polynomial pressure projection to circumvent the unpreferable pressure oscillation.
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© 2011 Springer-Verlag Berlin Heidelberg
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Borja, R.I., White, J.A., Liu, F. (2011). CIRCUMVENTING THE VOLUME AND CONTACT CONSTRAINTS IN MULTIPHYSICS FINITE ELEMENT SIMULATIONS. In: Borja, R.I. (eds) Multiscale and Multiphysics Processes in Geomechanics. Springer Series in Geomechanics and Geoengineering. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-19630-0_31
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DOI: https://doi.org/10.1007/978-3-642-19630-0_31
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-19629-4
Online ISBN: 978-3-642-19630-0
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