Reply To: Rock drilling

[javat33489]

Hello.

I did some more tests.

I also redesigned the LSTC setup, I added a drill instead of a bullet.

I did tests on two particles: SPH and SPG.

1.SPH. First I did a test with a low speed of 0.6 m/s

SPH particles scatter greatly, even the BOX card does not help, because of this the calculation is very slow.

But the calculation is successful, the particles are drilled, the particles pull the ring along with them.

Next, I tried to set the maximum speed for the rock drill, it is 40 m/s and the drill does not see the particles and flies right through. I reduced TSSF to 0.6, I added VDS = 20 in contact, I tried increasing the contact hardness, but it only got worse.

2.SPG. I also performed the calculation at low speed first.

But the calculation is accompanied by NEGATIVE VOLUME warnings. And it ends in failure.

So I have several problems:

1.When calculating at high speed, the drill does not see the contact.

2.When calculating on SPG particles, the errors are NEGATIVE VOLUME and inadequate reaction of particles.

3.The BOX map does not work and the calculation freezes until it calculates particles that fly far away.

4.SPG particles penetrate into the ring, is another contact necessary?

Dear ANSIS experts. If you can help me answer these questions.

I will be able to simulate the drilling process. I can also attach mine to a file hosting service for you to view, please let me know.

After you help me, I can start wearing.

Help me answer the questions, please.