September 28, 2023 at 7:22 pm
I'm simulating rock drilling using SPG particles.
I use the increased density to speed up the solution to the problem.
The task is similar to LSTC
Only I use the rock and my feed and drilling speeds.
I use an average speed of 25 m/s feed speed and 27 rad/s drilling speed.
While solving the problem, I encountered several problems.
1.I get a negative volume error. And when the particles fly apart, they pull the solid ring behind them and it is greatly distorted:
At low feed speeds there are no such problems.
2.I reduced the density a little, the solution became better and I got good stress. I also replaced the EROSION contact with AUTOMATIC:
But now I get warnings:
Why? how to deal with this?
September 29, 2023 at 2:38 pmRam GopisettiAnsys Employee
Try setting the ERODE option to 1and try to use 1.6 in dilation parameter and set SMSTEP to 5, check the stretch value and try to use an updated solver.
October 10, 2023 at 1:56 am
October 10, 2023 at 8:22 pmjavat33489Subscriber
I found the reason why the particles fly apart. It's all about the JHC material model. When this model is used, the particles fly apart. When I used MOHR-COULOMB the warnings went away
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