Dear Friends,
I have a problem when simulation a drop test in ANSYS/LS-DYNA.
I was trying to drop a flat plate with linear elastic material properties, but the first rebound height is always as high as the original drop height, or even a little bit higher, but after two or three rebounds the plate finally stay still on the ground which means the energy was dissipated now.
But what I confused is: since I did not define any damping or friction, why was the energy dissipated? The plate is supposed to move all the time, isn't it?
Then, I switched to using bilinear isotropic material properties, but got the same results.
So, does any of you know how to define a good drop test? I do not want the structure to rebound to the same height, because it is impossible in a real case.
Thanks a lot in advance.
Bests,
I have a problem when simulation a drop test in ANSYS/LS-DYNA.
I was trying to drop a flat plate with linear elastic material properties, but the first rebound height is always as high as the original drop height, or even a little bit higher, but after two or three rebounds the plate finally stay still on the ground which means the energy was dissipated now.
But what I confused is: since I did not define any damping or friction, why was the energy dissipated? The plate is supposed to move all the time, isn't it?
Then, I switched to using bilinear isotropic material properties, but got the same results.
So, does any of you know how to define a good drop test? I do not want the structure to rebound to the same height, because it is impossible in a real case.
Thanks a lot in advance.
Bests,