Hi all:
I am working on a project trying to use FEBio to model the growth of a cancer tumor around a duct in the body. As the most simple form of the model, I am modeling the cancerous mass using the cell growth material and forcing it to expand in a ring shape by imposing 2 rigid rings around it. To impose boundary conditions in cartesian coordinates, I am modeling a quarter of the setup. The geometry can be seen below (blue is cancerous cell growth, yellow is elastic material "healthy cells" and green and purple are rigid bodies). When I run the model as attached below, the cancerous cell growth behaves as I would expect, but I can not get the healthy cells (yellow) to compress without buckling and subsequently penetrating the surrounding rigid bodies. I have tried increasing the poisson's ratio, using augmented lagrangians, etc. Please let me know if you have any suggestions on how I can improve this situation (or any other general suggestions!). Any help would be much appreciated.
Thanks,
Ann
ductal_carcinoma_v1.feb
I am working on a project trying to use FEBio to model the growth of a cancer tumor around a duct in the body. As the most simple form of the model, I am modeling the cancerous mass using the cell growth material and forcing it to expand in a ring shape by imposing 2 rigid rings around it. To impose boundary conditions in cartesian coordinates, I am modeling a quarter of the setup. The geometry can be seen below (blue is cancerous cell growth, yellow is elastic material "healthy cells" and green and purple are rigid bodies). When I run the model as attached below, the cancerous cell growth behaves as I would expect, but I can not get the healthy cells (yellow) to compress without buckling and subsequently penetrating the surrounding rigid bodies. I have tried increasing the poisson's ratio, using augmented lagrangians, etc. Please let me know if you have any suggestions on how I can improve this situation (or any other general suggestions!). Any help would be much appreciated.
Thanks,
Ann
ductal_carcinoma_v1.feb
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