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Geomechanics Module

Showing result: 1 - 7 of 7
Deep ExcavationDeep Excavation

This deep excavation model is inspired by a benchmark exercise specified by a working group of the German Society for Geotechnics. In this model, a 20 m excavation is modeled with ten steps by means of a parametric sweep. The interaction...

Concrete Beam with Reinforcement BarsConcrete Beam with Reinforcement Bars

Concrete structures almost always contain reinforcements in the shape of steel bars ("rebars"). In COMSOL, individual rebars can be modeled by adding a Truss interface to the Solid interface used for the concrete. The solid mesh for the...

Tunnel ExcavationTunnel Excavation

This model provides an estimation of the behavior of the soil during a tunnel excavation. The surface settlement and the width of the plastic region around the tunnel are important parameters needed to predict the reinforcements to use...

Flexible and Smooth Strip Footing on a Stratum of ClayFlexible and Smooth Strip Footing on a Stratum of Clay

A common verification model for geotechnical problems is of a shallow stratum layer of clay. In this model, a vertical load is applied to the clay strata top surface and the static response and collapse load are studied. The clay is...

Block VerificationBlock Verification

This model shows how to set up a uniaxial compression test on a prestressed soil sample. Due to uniaxial compression and simple initial stress values, it is possible to determine the vertical yield stress analytically. The soil sample is...

Isotropic Compression Using Cam-Clay ModelIsotropic Compression Using Cam-Clay Model

Isotropic compression is a common exercise in soil testing. The modified Cam-Clay model describes the relation between the void ratio and the logarithm of the pressure. In this example, a soil sample is placed inside cylinder 10 cm in...

Triaxial TestTriaxial Test

The triaxial test is one of the most common tests used in laboratory soil testing. The soil sample is normally placed inside a rubber membrane and then compressed maintaining a radial pressure. In this model, a vertical displacement...