I am doing a bullet impact model on a plate and defined the JC damage model along with plastic kinematic model and have rigid bullet impacting at 1000m/s. I want to have element deletion when the bullet passes through it.. how to do the same in case of blast loading? I am using a SPH sphere giving blast velocity and EOS.
Use "Add_Erosion" material property for any material you want it to have the deletion ability.
with thanks,
Fadi
for deleting elements, you can use a cut off damage model with Pmin=-100 MPa (spall) for instance. When the element will have a negative pressure (tensile), it will be deleted. It is also possible to implement a strain failure model (more classical).
Use "Add_Erosion" material property for any material you want it to have the deletion ability.
with thanks,
Fadi
Dear Mithilesh,
for delete the element in LS-Dyna, you need to use damage criteria which fits to tour problem. Maximum stress or strain, Add erosion, mat 54 or if you don't have licence problem Mat 161 and 162 gives the appropriate answer for your problem.
ask me any further question,
cheers,
ali
- Badges
- Science topic