stress analysis of toilet bowl

Today I'm going to conduct a stress analysis of a common ceramic toilet bowl with the help of COSMOSXpress, which comes with the standard SolidWorks software.

This is the toilet bowl selected for this study.

We are only interested in the green portion, since the water inside the water tank is definitely cleaner than the liquid in the highlighted part.

Now here comes the problem. COSMOSXpress only allows you to exert force on the whole plane and not a point load. What it means is, it assumes your butt is so big it can cover the whole highlighted surface. Not very likely.

And this is the stress distribution under von Mises criterion. Surprisingly the highest stress is located near the water tank. But anyway this analysis is not accurate.

Conclusion: screw the toilet bowl. Not very funny when you are sitting on it and then it explodes.
No lah! I mean, get another finite element analysis (FEA) software. There is always limitation to tools and now I'm telling you, your toilet bowl won't explode under normal usage.