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Hi,

I just have a quick question about mesh convergence, hopefully someone can help.

I have a model of a pipe bend that I've meshed using ABAQUS and then found the location and value of the maximum von Mises stress. I then refined the mesh a few times and plotted the max stress against the number of elements in each mesh. The resulting graph has the following shape with no. of elements on the X axis and stress on the Y axis

.

http://people.sinclair.edu/nickreeder/eet150/PageArt/exponentialI.gif

Any mesh convergence graphs I've seen however have the following shape.

http://www.chalice-engineering.com/News/images/knowledge1_fig1.GIF [Broken]

Does it matter that my graph is a mirror image of what it "should" be? ie the stress in my model converges from a higher stress to a lower stress rather than vice versa.

Any help would be appreciated.

Thanks.

I just have a quick question about mesh convergence, hopefully someone can help.

I have a model of a pipe bend that I've meshed using ABAQUS and then found the location and value of the maximum von Mises stress. I then refined the mesh a few times and plotted the max stress against the number of elements in each mesh. The resulting graph has the following shape with no. of elements on the X axis and stress on the Y axis

.

http://people.sinclair.edu/nickreeder/eet150/PageArt/exponentialI.gif

Any mesh convergence graphs I've seen however have the following shape.

http://www.chalice-engineering.com/News/images/knowledge1_fig1.GIF [Broken]

Does it matter that my graph is a mirror image of what it "should" be? ie the stress in my model converges from a higher stress to a lower stress rather than vice versa.

Any help would be appreciated.

Thanks.

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