Product: Abaqus/Standard
Benefits: In a coupled pore fluid diffusion and stress analysis, you can now specify a mechanical surface pressure such that the magnitude of the load is determined by the current value of the pore pressure degrees of freedom at the nodes of the element face. This new loading option allows you to simply and automatically apply a solution-dependent mechanical pressure to a wetted surface.
Description: Fluid pressures acting on the wetted surfaces of a restraining structure, such as the submerged face of a dam, the surface of a borehole in an oil drilling operation, or the interior of a fluid-filled cavity, create mechanical pressures that load the structure. Such loads can be very important to the overall response of a system. For example, in the case of a borehole in an oil drilling operation, the fluid pressure acting on the wall of the borehole can create hoop stresses that are large enough to fracture the wall and allow the drilling fluid to leak off into the formation.
The new load type PORMECH allows you to easily apply a proper mechanical surface pressure that was previously very difficult to include because the magnitude of the pressure is not typically known a priori. The load is supported for two-dimensional, three-dimensional, and axisymmetric coupled pore pressure elements.
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