Siddeshwaran
Hi,
i am defining a non-linear material property in optistruct as below
$HWCOLOR LOADCOL* 10 3
TABLES1* 10
*
* 0.0 0.0 0.0005 100.0
* 0.0010 200.0 0.0014 300.0
* 0.0019 400.0 0.0024 500.0
* 0.0029 600.0 0.0030 620.0
* 0.0031 648.0 0.004 672.0
* 0.013 696.0 0.03 720.0
* 0.058 744.0 0.1 768.0
* 0.158 792.0 0.235 816.0
* ENDT
i am getting an error '
*** ERROR # 3021 ***
The plastic material data specified on the TABLES1 bulk data entry ID=10
is invalid. The slope after the initial yield point is not less than the
Young's modulus. ( 2.000000e+05 >= 2.000000e+05 ) at the segment 2.
*** Run terminated because of error(s) in the input data.
but i checked the slope of the curve. it correct. what could be the issue?
Answers
-
Hello,
If your elastic modulus is 2e5, the error message is correct.
Since for the first plastic slope 100/0.0005 = 2e5, exact same slope and this is not allowed.
The strain in the table starts at plastification, means 0,0 is end of elastic range.
Best Regards,
Mario
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