dynamic mesh
 

Hi
I use dynamics mesh method to simulate unfolding wings. I use 1,000,000 unstructured cell. But after 15 time step,size of mesh increase to 3,000,000!
I change the re-meshing parameter (min and max length scale) from zero to mesh scale info and spring constant factor from zero to 1, But this problem remain. I don't know how solve this problem.