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Ansys Learning Forum › Forums › Discuss Simulation › General Mechanical › Large deflection convergence problem › Reply To: Large deflection convergence problem

March 11, 2024 at 5:43 pm
Marcin Nowak
Subscriber

No, they have not.
- This is a biological tissue,
- the radius increases by about 80 micrometers as indicated in the attached pictures in previous post (diameter almost doubled) then simulation crashes. This happens for about 24% of the load (the load is internal pressure of 10 kPa). For the small deflection model, the final diameter (for final load) is approx. two times the initial.
- Yes this is artery, with applied linear elasticity and I would like to solve it for such material model,
- Yes the real experiment was done, for such pressure the similar deformations are observed (approx. doubled diameter)

I am wondering whether changing the simulation type from the Static Structural to Transient Structural may help? As this is a practice used in the fluid mechanics. However in my static structural analysis I set multiple substeps so probably it would not make a difference