Extending DualSPHysics with a Differential Variational Inequality: modeling fluid-mechanism interaction

The model is validated with fluid-structure-structure interaction cases. Both frictional and multi-restriction based behaviors are tested and simple convergence analysis are presented, showing that the model is capable of reproducing complex interactions. Several hypothetical cases are then presented, in order to demonstrate possible applications, showcasing a wide set of options useful for practitioners requiring the use of advanced fluid-mechanism models.