Why does ANSYS 10.0 evaluate the polynomial defined below at +/-9999 degrees
and not the two temperatures I specified? ANSYS 7.1 evaluated this polynomial at
0 and 875 degrees as I intended.
/PREP7
MPTEMP,1,0,875
MP,EX,1,2.081E+5,1.331E+2,2.349E-1,2.389E-4
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In ANSYS 10.0, if you only use two temperatures with the polynomial option for temp-dependent material property input, the polynomial is evaluated at +/-9999 as would be done for a linear property no matter what temperatures you specify with MPTEMP. This probably gives a user incorrect results since straight line interpolation is used between the two evaluated temperatures. The input of a number of temperatures equal to the order of the polynomial (in the above example 2) will be blocked in ANSYS 11.0. [Ref: Defect 38335] A workaround is to specify 3 or more temperatures. |
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