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tadded dampening - sphere - GPU-based 3D discrete element method algorithm with…
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commit 3541524c4cd9b0c3c474232ca6bb9e469e5b5546
parent d9bcb826a7b9d4cbf74c8b0afc00bcd89829e23f
Author: Anders Damsgaard <[email protected]>
Date: Thu, 19 Jun 2014 14:58:30 +0200
added dampening
Diffstat:
M python/shortening.py | 62 +++++++++++++++++++++--------…
1 file changed, 43 insertions(+), 19 deletions(-)
---
diff --git a/python/shortening.py b/python/shortening.py
t@@ -8,25 +8,25 @@ cube.adjustUpperWall(z_adjust=1.0)
# Fill out grid with cubic packages
grid = numpy.array((
- [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
- [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
- [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
- [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
- [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
- [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
- [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,13],
- [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,12,12,12],
- [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,11,11,11,11,11],
- [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,10,10,10,10,10,10,10],
- [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9],
- [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8],
- [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7],
- [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6],
- [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5],
- [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4],
- [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3],
- [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2],
- [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
+ [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
+ [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
+ [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
+ [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
+ [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
+ [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
+ [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1],
+ [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 2, 2],
+ [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1],
+ [ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 2, 2, 2, 2, 2, 2],
+ [ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
+ [ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2],
+ [ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
+ [ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2],
+ [ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
+ [ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2],
+ [ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
+ [ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2],
+ [ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
))
# World dimensions and cube grid
t@@ -69,6 +69,7 @@ sim.x[:,2] = sim.x[:,2] - min_z
sim.defineWorldBoundaries(L=[Lx, Lz*3, Ly])
sim.k_t[0] = 2.0/3.0*sim.k_n[0]
+sim.cleanup()
sim.writeVTK()
print(sim.np[0])
t@@ -81,6 +82,14 @@ sim.g[0] = 0
sim.g[1] = -9.81
sim.g[2] = 0
+sim.gamma_wn[0] = 1.0e4
+sim.mu_ws[0] = 0.0
+sim.mu_wd[0] = 0.0
+
+sim.gamma_n[0] = 1.0e2
+sim.mu_s[0] = 0.0
+sim.mu_d[0] = 0.0
+
sim.periodicBoundariesX()
sim.uniaxialStrainRate(wvel = 0.0)
t@@ -93,12 +102,26 @@ sim.run()
sim.writeVTKall()
+'''
## Shortening
sim = sphere.sim('shortening-relaxation', nw=1)
sim.readlast()
sim.sid = 'shortening'
+sim.cleanup()
sim.initTemporal(current=0.0, total=5.0, file_dt = 0.01)
+# set colors again
+color_ny = 6
+y_max = numpy.max(sim.x[:,1])
+color_dy = y_max/color_ny
+color_y = numpy.arange(0.0, y_max, ny)
+for i in range(ny-1):
+ I = numpy.nonzero((sim.x[:,1] >= color_y[i]) & (sim.x[:,1] <= color_y[i+1]…
+ sim.color[I] = i%2 + 1
+
+sim.mu_s[0] = 0.5
+sim.mu_d[0] = 0.5
+
# push down upper wall
compressional_strain = 0.5
sim.uniaxialStrainRate(wvel = -compressional_strain*Lx/sim.time_total[0])
t@@ -106,3 +129,4 @@ sim.uniaxialStrainRate(wvel = -compressional_strain*Lx/sim…
sim.run(dry=True)
sim.run()
sim.writeVTKall()
+'''
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