Hi all, I have started a simulation in which I am testing the erosion rate of certain materials. The set up of this simulation is fairly basic with a sphere, to represent a raindrop, modelled above a plate to represent the target material. The sphere has the material property of water pre-defined in Ansys and I have inputted a shock EOS. I am using the pre-defined Epoxy Res material in the Ansys library for the plate material. The model is setup with a Lagrangian/Euler approach with the Sphere modelled with Euler and the plate modelled with Lagrangian. The reason I chose this was because of the expected high deformation with the raindrop upon impact. The simulation was set up with an initial velocity of 140m/s and a fixed support on the underside of the plate. The Euler domain is set to the sphere only.

The simulation runs fine but upon output for stress, strain and deformation there is 0 for all. When I play the simulation what I see is the sphere disappearing almost instantly. I am wondering if anyone has any insight as to why this is happening? Initially, I believe that the Euler domain is causing the sphere to disappear by stopping the sphere from falling. All of the faces of the domain are set to flow out. I haven't used this software for a while and appreciate any help you can give me.

Thanks

Iain

Edit: I have just run the simulation with the domain over all bodies and gotten some results. The thing is I'm attempting to replicate results so the domain needs to be over just the sphere.