I’m trying to model draping and collision of a fabric like bio-material using Kangaroo bouncy solver (the resolved form will be analysied using FEM with different mechanical properties to mimic how it dries/ hardens).

The material has a very low weight and high tensile strength.

Weight is added per node using ‘Load’, and stiffness (k) is added as the strength input for ‘Edge Lengths’ (*…assign real quantitative meaning, by setting the strength to the spring constant in N/m, calculated as EA/L, where E is the Young’s modulus of the material in Pa, A is the cross-sectional area in m 2 , and L is the rest length in m.*)

With either low weight in ‘Load’ and/ or high ‘Strength’ in ‘Edge Lengths’ the simulation runs incredibly slow - some times with impercievable movement.

Is there any explanation for this? Am I misunderstanding the nature of the modelling?

I’ve attatched a simplified version of the file (with values in the order of my expected simulation) that exhibits this issue.

Thank you, any advice would be hugely appreciated!!

simlified drape.gh (23.4 KB)