Modeling failure of hyperelastic solids interacting with fluids

In this paper, we present a coupled smoothed particle hydrodynamics and a constitutively informed particle dynamics model of a hyperelastic material. The proposed coupling strategy accurately transmits the forces between the fluid and solid, conserving momentum strictly. Using this model, we simulate the role of fluid impact on failure of a nonlinear elastic solid in the case of a canonical dam break problem. The location of the notch on the failure of the obstacle is found to be critical. Several modes of failure of the obstacle are observed, depending on the location of the notch and the height of the obstacle. Under some conditions, multiple failures of the obstacle occur simultaneously.