New question #683312 on Yade:
https://answers.launchpad.net/yade/+question/683312
Hi everyone,
I have a single particle (irregular geometry) which is in STL format and I want
to use it as a replacement for spheres to fill a container. Similar to the
makecloud function.
I am aware that STL format can only be imported as facets.
The input command I used to import the single particle in STL format is as
follows:
particle1 = O.bodies.append(ymport.stl('/directory of file.stl'))
The script below is a sample for generating spheres in a container. Greatly
appreciate if anyone could provide some guidance on how to fill the container
with the single particle, which is in STL format.
#Particle Generation Script
O=Omega()
# add a material type FrictMat
O.materials.append(FrictMat(young = 1E7, poisson = 0.25, frictionAngle = 0.6,
density = 2650))
# Corners of the box
x_min, y_min, z_min = 0.0, 0.0, 0.0
x_max, y_max, z_max = 0.5, 0.2, 0.3
## Generate a container
# top wall
O.bodies.append(utils.box(center = [(x_min + x_max)/2, (y_min + y_max)/2,
z_max], extents = [(-x_min +
x_max)/2, (-y_min + y_max)/2, 0], fixed = True, wire=True))
# bottom wall
O.bodies.append(utils.box(center = [(x_min + x_max)/2, (y_min + y_max)/2,
z_min], extents = [(-x_min +
x_max)/2, (-y_min + y_max)/2, 0], fixed=True, wire=True))
# left wall
O.bodies.append(utils.box(center = [x_min, (y_min + y_max)/2, (z_min +
z_max)/2], extents=[0, (-y_min
+ y_max)/2, (-z_min + z_max)/2], fixed=True, wire=True))
# right wall
O.bodies.append(utils.box(center = [x_max, (y_min + y_max)/2, (z_min +
z_max)/2], extents=[0, (-y_min
+ y_max)/2, (-z_min + z_max)/2], fixed=True, wire=True))
# front wall
O.bodies.append(utils.box(center = [(x_min + x_max)/2, y_min, (z_min +
z_max)/2], extents = [(-x_min +
x_max)/2, 0, (-z_min + z_max)/2], fixed=True, wire=True))
# behind wall
O.bodies.append(utils.box(center = [(x_min + x_max)/2, y_max, (z_min +
z_max)/2], extents = [(-x_min +
x_max)/2, 0, (-z_min + z_max)/2], fixed=True, wire=True))
# Generate a cloud of spheres
sp=yade._packSpheres.SpherePack()
sp.makeCloud(Vector3(x_min, y_min, z_min), Vector3(x_max, y_max, z_max), 0.006,
0.2)
O.bodies.append([utils.sphere(s[0], s[1]) for s in sp])
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