The data points below were taken from Ansys and plotted on Excel for a convergen

Question

The data points below were taken from Ansys and plotted on Excel for a convergence test. Of the 3 graphs below, which one converges faster and why?

0 2100 0.037236 876 0.037145 435 0.036977 292 0.036875 181 0.036902 161 0.036994 2100 3749.5 876 3749.6 435 3749.8 292 3750.9 181 3752.8 161 3752.2 210032483 876 22266 435 35046 29231418 181 18314 161 27594 Convergence for Max Deformation Convergence for stress at point D Convergence for Stress at point A 752 5 .0372 0.03715 15 17 16 19 20 21 3751 37505 3750 37493 0.037 0.03695 0.03605 # of nodes of nodes # of Nodes

Explanation / Answer

Middle graph is converging faster.

From left if i say 1,2,3 graphs

3rd graph is not converging because by changing node points there is large change in stress.

for 2nd graph if you see by changing node points from 500 to 2000 there is not much change in stress.

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