Dears,
I'm simulating a vibrating box with particles inside (see box.png) that it moves in the y-axis.
In my simulation particles explodes at certain instant time (see exp.gif). I saw some forum topics about this, but it isn't help me.
I try changing some parameters and when I change Young's modulus(from 23 MPa to 5 MPa) it isn't exploit.
I attach input script and geometries.
How i can solve this without change the Young's modulus?
Best regards,
| Attachment | Size |
|---|---|
 Geometries | 25.39 KB |
 box.png | 240.48 KB |
| Animation of the simulation | 1.68 MB |
 boxv.txt | 2.4 KB |
richti83 | Fri, 06/24/2016 - 09:02
with such a high youngs
with such a high youngs-modulus you need a very small timestep, try Y=2.3e7, dt=1e-6 and google critical timestep DEM.
In DEM you use a reduced stiffness to reach higher timesteps, this is normely not a problem and is corrected by calibration of the other material parameters (friction)
I can not download your input skript, got only 404, pls post the relevant lines (timestep, property/global, size-distri) here.
xpt | Sat, 06/25/2016 - 02:08
You're right!
You're right!
Thanks, now I undertand!