July 14, 2021 at 12:48 am

peteroznewman

Subscriber

I recommend the following to help convergence.

Use more elements through the thickness. A minimum of 4 linear elements should be used through the thickness. There are several places where there is only one element across the thickness.

Add Keyop(6)=1 to the Meniscus because that material is close to incompressible with a Poisson's Ratio of 0.49

Add Keyop(6)=1 to the Cartilage because that material is close to incompressible with a Poisson's Ratio of 0.45

Consider using Hyperelastic Material model for the Cartilage because that material has a low Young's Modulus.

Use more elements through the thickness. A minimum of 4 linear elements should be used through the thickness. There are several places where there is only one element across the thickness.

Add Keyop(6)=1 to the Meniscus because that material is close to incompressible with a Poisson's Ratio of 0.49

Add Keyop(6)=1 to the Cartilage because that material is close to incompressible with a Poisson's Ratio of 0.45

Consider using Hyperelastic Material model for the Cartilage because that material has a low Young's Modulus.