SOLID185 with KEYOPT(2)=3 (for simplified enhanced strain) will not always converge in ANSYS 8.0/8.1 when identical problems using SOLID45 converge successfully. Why? SOLID185 with simplified enhanced strain is supposed to be the same as SOLID45.

This was a bug in ANSYS 8.0 related to different convergence criteria being erroneously set for the SOLID185 with KEYOPT(2)=3.
It has been corrected at ANSYS 9.0.

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