Help [Question] Does the Cross-sectional area of rope change?

[YashJ]

Hi, I have very recently started using Unity physics engine for a research problem. I need to calculate the contact area between two ropes when they are being twisted together. I feel that Obi Rope should be able to bend and change it's cross-sectional area for me to be able to calculate it but I was't sure. Can I define the parameters for the elasticity of the rope in it's cross-section? Will the cross-sectional area change with force applied?