Coupling MPS and Modal Superposition Method for Flexible Wedge Dropping Simulation

In this paper, a modified version of Moving Particle Semi-implicit method (MPS), is combined with a structural model, which fully couples the rigid-body motion and modal superposition, to calculate the dynamics of the free dropping of 2d symmetric flexible wedge. The mutual effect between rigid-body and elastic mode are taken into account in this model. Compared with FEM, the linear system generated by the structural model would be much smaller (three rigid modes plus several elastic modes), regardless of the scale of the structure. The rigid and different flexible cases were simulated. The results are compared to experimental data from the literature. Both the acceleration and strain results are found to be in good agreement with the experimental data.