![]() Displacements and velocity are therefore sent back from the FEA code to the particle code. The FEA results are new nodal displacements and nodal velocities, which on their part are the input to the particle code describing the motion of the coupled wall. These forces are the structural load applied to the FEA model. ![]() ![]() The particles, hitting the wall, cause reaction forces at the wall, e.g., due to repulsion, cohesion and damping as well as tangential friction. The coupled walls on the structural side are in fact all parts, which may get in contact with the particles during the simulation at any time.Īt the coupled walls, elastic and kinetic energy as well as momentum are exchanged between the structure and the particles. In this surface coupling method these walls are the domain boundaries of each numerical model. Co-simulations using smoothed particle hydrodynamics (SPH) and FEA are useful to model fluid-structure interaction (FSI) phenomena including large deformations.Ĭo-simulation in the cases presented here means the controlled exchange of quantities on the coupled walls between two different simulation codes at each time step. The possibility of coupling discrete element method (DEM) and finite element analysis (FEA) simulations is particularly attractive in order to model contact between granular matter and soft bodies.
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