Hi @bhattarai, I have never worked with user-defined materials in LS-Dyna so I'm not sure how much I would be able to help. This is pretty high-level ...

@dummy-error Okay I'll see if I can take a look at them. Oh no worries, I wouldn't ask you to share anything through this that would be proprietary in...

@djsburra that's good to hear! Yeah the people I know at Altair are all very nice. Fingers crossed for sure! Let me know if you get it worked out

@bhattarai Okay got it. Yeah that’s what I was thinking, that it wouldn’t make sense to use AOPT=2 since that would use the global coordinate system. ...

Hi @arafat_alam, So are individual cubes of shell elements being created around each solid element? Could you provide an image of what is happening?...

@dummy-error thanks for providing this. I’m not familiar with these particular versions of the HIII head models, but I would think that the one labele...

@viky113 I see. So first off, I would start with the question of what is the ultimate goal of this setup? Is it to use with a future project like simu...

@viky113 Ah okay now we are getting somewhere. Cool, so in the physical test are the load plates physically connected to the sled floor like you have ...

Hi @willjust, I'm not familiar with "must read" books in that field but that seems like a solid choice to get you started. I'm a pretty visual lear...

Hi @djsburra, That really stinks, they must have updated their student license limitations this year. Honestly, it never hurts to contact them and ...

I see. Normally that would be called a "birth time" but I'm not sure if that is possible for a constraint. You can use birth times for tied contacts w...

Hi @dummy-error, Your username checks out for sure 🤣 How are you calculating HIC? If you are using LS-PrePost, make sure that you select "Apply pre...

Hi @manoz21, It could be a multitude of issues. What material model are you using for the steel and are you just using literature values for the pa...

Hi @viky113, You can add inertia to rigid parts using *Part_inertia, so you may be able to duplicate the elements on the deformable body and assign...

Hi @bhattarai, This seems like a really interesting topic. Disclaimer: I have never used user defined materials so I'm not sure how much help I can...