I have been simulating an object falling into an Eulerian fluid domain in Abaqus/Explicit. But I get extremely large stresses (around 100 MPa and up to 400 MPa) in the falling object even before it come in contact with the fluid surface. I removed the fluid part altogether from the model but I still get large stress singularities. I have tried different elastic moduli from 9 to 200 GPa, so the problem is not from the material. Built the model from scratch without the fluid part and still no luck. I also used a simple ball shape for the object but the problem is still there. Any idea what is causing this problem?