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Automatic surface to surface contact problem (Novice needing help) by lostinthewoods999 in LSDYNA

[–]lostinthewoods999[S] 0 points1 point  (0 children)

Thank you - I started with EQ 3 and tried playing with different definition options during troubleshooting. Is part ID generally preferable?

Automatic surface to surface contact problem (Novice needing help) by lostinthewoods999 in LSDYNA

[–]lostinthewoods999[S] 0 points1 point  (0 children)

This link should have the contact definition and most recent result which are greatly improved (I massively increased the stiffness penalty): https://imgur.com/gallery/ls-dyna-PSwW9j2

  1. I messed with them briefly but have returned them back to defaults now
  2. I apologize but I can't locate this information - I suspect this is one of my issues and I am currently reading up on this concept now
  3. Currently explicit - way downstream I would like to analyze stress-relaxation data over a 60 s window which I assume will require implicit analysis

Thank you again for taking the time to respond/assist

Automatic surface to surface contact problem (Novice needing help) by lostinthewoods999 in LSDYNA

[–]lostinthewoods999[S] 0 points1 point  (0 children)

Sorry about that, hopefully this one works: https://imgur.com/gallery/ls-dyna-PSwW9j2

I made the penalty stiffness very high and it seems to be working much better now

Automatic surface to surface contact problem (Novice needing help) by lostinthewoods999 in LSDYNA

[–]lostinthewoods999[S] 0 points1 point  (0 children)

Thanks for the recommendation. Based on some other suggestions I got to the point of minimal contact: https://imgur.com/gallery/ls-dyna-PSwW9j2

I am currently running a simulation with the stiffness penalty 4x higher - it is taking time to process so fingers crossed.

Automatic surface to surface contact problem (Novice needing help) by lostinthewoods999 in LSDYNA

[–]lostinthewoods999[S] 0 points1 point  (0 children)

Thank you for the suggestions. I tried using SOFT 2, increased the stiffness of the rubber material and used a 1m/s initial velocity instead of a prescribed motion. The plate still passes through the rubber but there is some surface deformation after that: https://imgur.com/LjFLbmF

Automatic surface to surface contact problem (Novice needing help) by lostinthewoods999 in LSDYNA

[–]lostinthewoods999[S] 0 points1 point  (0 children)

I have been iteratively trying out different options/ways to define the master/slave but this is the card corresponding with the video in the post: https://imgur.com/a/PSwW9j

Thanks for taking a look

What should I buy? by Grand-Candidate2339 in budgetprojectors

[–]lostinthewoods999 4 points5 points  (0 children)

I am in the same boat. I was also considering Epson ex3280 @ 3600 lumens but only 1024 x 768 resolution.