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?
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