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Adaptability of constitutive model of lung

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I want to simulate the respiratory movement of the lungs. At first, I used a linear elastic model for the lungs, which can be successfully realized. However, when I use the St Venant- Kirchhoff material model in the hyperelastic model, "the returned solution can't converge", so that my model can't run normally. The two material models have the same material parameters, boundary conditions and boundary loads, but why does this happen?


0 Replies Last Post Sep 13, 2022, 9:31 p.m. EDT
COMSOL Moderator

Hello Liang Tan

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