USING LIGGGHTS HOW TO MAKE THE SUPERQUADRIC BONDED PARTICLES AS REALISTIC AS POSSIBLE ACCORDN TO ACTUAL MATERIAL SPECIFICATIONS

Hi,
As i am new to DEM simulation using liggghts ,

Based on bonded superquadric particle , we have developed a flexible film. Our objective is to make the flexible film as realistic as possible. For example I need to make a flexible film having properties as similar to a PVC film. Here I have 2 questions,

!) To make the film realistic, I suspect I need to change the material properties of particle, contacts and also the bond coefficients in my input script. Here the doubt is, whether the approach is correct or what should I do to make my film as realstic as a PVC flexible film?

2)For the flexible film , after setting the parameters, after making it a realistic film, we need to perform tensile tests. Based on empirical results, the values obtained should be similar to DEM smulation suppose the ultimate tensile strength. How to perform it ?please suggest the suitable commands required to be used.

However, I did use fix deform command, velocity commands to pull the film by freezing the border on the other side. But, I am getting too many errors, please give me some proper insights regarding this.

I also suspect, whether we can conduct tensile tests using superquadric materials, since I got a error stating ( function AtomSuperquadric : : pack_border_hybrid is not implemented yet)

thanks,
Ashish James Philip