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A stabilized finite element formulation for monolithic thermo-hydro-mechanical simulations at finite strain

Sun, WaiChing

An adaptively stabilized monolithic finite element model is proposed to simulate the fully coupled thermo-hydro-mechanical behavior of porous media undergoing large deformation. We first formulate a finite-deformation thermo-hydro-mechanics field theory for non-isothermal porous media. Projection-based stabilization procedure is derived to eliminate spurious pore pressure and temperature modes due to the lack of the two-fold inf-sup condition of the equal-order finite element. To avoid volumetric locking due to the incompressibility of solid skeleton, we introduce a modified assumed deformation gradient in the formulation for non-isothermal porous solids. Finally, numerical examples are given to demonstrate the versatility and efficiency of this thermo-hydro-mechanical model.

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Title
International Journal for Numerical Methods in Engineering
DOI
https://doi.org/10.1002/nme.4910

More About This Work

Academic Units
Civil Engineering and Engineering Mechanics
Published Here
April 6, 2015