Hi @mirko094, What do you mean by "characterizing" your model exactly? Material properties and mesh? And what is the goal of the simulation?

Hi @davidszonyi, I have seen this happen with certain types of contacts like Single_Surface contacts. Any chance that’s what you are using?

@csuznxg I see, I did not realize that’s what your original question was saying. Interesting that it fixed the oscillations though...

Hi @lsdynastudent, There is a density value that will define the mass depending on the size/volume of the object that you are giving this material.

@csuznxg So you were running two separate simulations and condensed into one simulation?

@themountain So in the 3D toolbar, go to tetramesh -> Tetra mesh, and select all the 2D tria elements of your object. You can mess around with usin...

@csuznxg I see, you are numerically applying a preload. You could try to lengthen the time duration of your load curve for the preload to see if that ...

Hi @themountain If your goal is to get a 3D tetrahedral mesh then you don’t need to use an .step file. You can 3D tetramesh an enclosed .stl tria mesh...

Hi @csuznxg Are the stress oscillations substantial? I’m not sure what units you are in or the nature of your simulation, but small stress oscillation...

Hi @lsdynastudent, You need to add the node to *Database_History_Node and then add *Database_Nodout. Here is a post with a lot more detail.

Hi @csuznxg Most of the time there are thresholds for percent mass increase depending on your application. A general rule for LS-Dyna that I have used...

Hi @lsdynastudent I'm not sure that I know what an SRS graph is, could you explain further?

Hi @sonlong, I'm not sure what you mean by "constrain all nodes of the solid elements to a reference point" You are performing a displacement control...

Hi @dani Could you provide more details as I'm not exactly sure what you're question is? Which part is the laminate material? What is this a picture o...

@samuele-libralato Great news! Soft=2 and depth=5 is usually my go-to setting for any contacts that I'm having issues with. You can use it for single_...