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siddeshwaran

Non linear materail property

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Hi,

 

I am defining a non-linear material data as below

$HWCOLOR LOADCOL*                     10       3
TABLES1*              10
*      
*                    0.0             0.0          0.0005           100.0
*                  0.001           200.0          0.0014           300.0
*                 0.0019           400.0          0.0024           500.0
*                 0.0029           600.0           0.003           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

 

But I am getting an error as shown below

 
 *** 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.
 
I checked the slope of the curve. I don't find any issues with that. please let me know what should be corrected?

youngs 0 0   dy dx slope  
210000 0.0005 100   100 0.0005 210000  
210000 0.0010 200   100 0.0005 210000  
210000 0.0014 300   100 0.0005 210000  
210000 0.0019 400   100 0.0005 210000  
210000 0.0024 500   100 0.0005 210000  
210000 0.0029 600   100 0.0005 210000  
210000 0.0030 620   20 0.0001 210000  
210000 0.0031 648 Yeild point 28 0.0001 210000 yeild point
  0.00400 672   24 0.0009 26250  
  0.013 696   24 0.0090 2666.667  
  0.03 720   24 0.0170 1411.765  
  0.058 744   24 0.0280 857.1429  
  0.1 768   24 0.0420 571.4286  
  0.158 792   24 0.0580 413.7931  
  0.235 816   24 0.0770 311.6883  

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9 minutes ago, siddeshwaran said:

Hi,

 

I am defining a non-linear material data as below

$HWCOLOR LOADCOL*                     10       3
TABLES1*              10
*      
*                    0.0             0.0          0.0005           100.0
*                  0.001           200.0          0.0014           300.0
*                 0.0019           400.0          0.0024           500.0
*                 0.0029           600.0           0.003           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

 

But I am getting an error as shown below

 
 *** 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.
 
I checked the slope of the curve. I don't find any issues with that. please let me know what should be corrected?

youngs 0 0   dy dx slope  
210000 0.0005 100   100 0.0005 210000  
210000 0.0010 200   100 0.0005 210000  
210000 0.0014 300   100 0.0005 210000  
210000 0.0019 400   100 0.0005 210000  
210000 0.0024 500   100 0.0005 210000  
210000 0.0029 600   100 0.0005 210000  
210000 0.0030 620   20 0.0001 210000  
210000 0.0031 648 Yeild point 28 0.0001 210000 yeild point
  0.00400 672   24 0.0009 26250  
  0.013 696   24 0.0090 2666.667  
  0.03 720   24 0.0170 1411.765  
  0.058 744   24 0.0280 857.1429  
  0.1 768   24 0.0420 571.4286  
  0.158 792   24 0.0580 413.7931  
  0.235 816   24 0.0770 311.6883  

 

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