optimization for inv_free(undo some changes)

Author: Roushelfy

4_friction/simulator.py

@@ -10,8 +10,8 @@
 # simulation setup
 side_len = 1
 rho = 1000 # density of square
-k = 4e4 # spring stiffness
-n_seg = 10 # num of segments per side of the square
+k = 2e4 # spring stiffness
+n_seg = 4 # num of segments per side of the square
 h = 0.01 # time step size in s
 DBC = [] # no nodes need to be fixed
 # ANCHOR: slope_setup

6_inv_free/simulator.py

@@ -14,7 +14,7 @@
 E = 1e5 # Young's modulus
 nu = 0.4 # Poisson's ratio
 # ANCHOR_END: lame_param
-n_seg = 6 # num of segments per side of the square
+n_seg = 4 # num of segments per side of the square
 h = 0.01 # time step size in s
 DBC = [(n_seg + 1) * (n_seg + 1)] # dirichlet node index
 DBC_v = [np.array([0.0, -0.5])] # dirichlet node velocity