How to overcome the fatal error when using MATS1/PLASTIC material in SOL106
In versions prior to 2306, running a SOL106 solution in Simcenter 3D Pre/Post with MATS1/PLASTIC material defined can result in a fatal Nastran error:
*** USER FATAL MESSAGE 316 (IFPDRV)
ILLEGAL DATA ON BULK DATA ENTRY MATS1
MATS1 2 1 PLASTIC 1 1 +000000M
+000000M ENG 000000N
^^^ USER FATAL MESSAGE 9002 (IFPS)
^^^ ERROR(S) ENCOUNTERED IN THE MAIN BULK DATA SECTION
^^^ SEE MESSAGES ABOVE. ERROR ENCOUNTERED IN MODULE IFP,
This issue is because Simcenter 3D Pre/Post does not export the LIMIT1 value under the MATS1 entry. The workaround to this error in versions prior to 2306 is manually copy the initial yield point from the stress-strain curve.
Nastran Export in Versions Prior to 2306:
Fatal Error After Nastran Runs the Solution:
Workaround: Manually Copy the Initial Yield Point Under LIMIT1