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. Author manuscript; available in PMC: 2018 Oct 23.
Published in final edited form as: IEEE Trans Biomed Eng. 2014 Dec 2;62(3):939–947. doi: 10.1109/TBME.2014.2373399

Fig. 3. Eigenvalue analysis on the cylinder problem.

Fig. 3

Panel A shows the minimum absolute eigenvalue decreasing for higher pressures, leading to very high condition numbers (Panel B). For the direct discretization without stabilization, the erratic values are caused by eigenvalues crossing zero (Panel C), which does not happen in the stabilized methods or isochoric/deviatoric approach.