Error in table of type TABLES1

SSD
SSD Altair Community Member
edited October 2020 in Community Q&A

*** ERROR # 3010 ***
 The xi specified on the TABLES1 bulk data entry ID=6 is not in ascending
 order.

 

Table with plasticity curve:

 

0 0
0 306
0.0011 415
0.0022 445
0.003 461
0.004 474
0.0052 489
0.0061 498
0.0071 505
0.0081 512
0.009 522
0.0102 530
0.0121 543
0.013 550
0.014 555
0.015 561
0.0159 567
0.0171 572
0.0181 577
0.0204 592
0.0303 632
0.0405 663
0.0502 687
0.06 706
0.0702 722
0.0807 737
0.09 749
0.0997 758
0.101 759
0.11 768
0.15 805
0.2 840
0.3 900
0.5 1000
1 1210

 

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Answers

  • Simon Križnik
    Simon Križnik Altair Community Member
    edited June 2020

    Hi,


    the error is because the first two X coordinate entries are the same (not ascending). The initial coordinates in the plasticity curve (TYPSTRN=1) should satisfy zero,non-zero requirement (the yield stress can not be zero). So your curve should start with 0,360 instead of 0,0.

     

    https://altairuniversity.com/wp-content/uploads/2016/10/1189_MATS1-definition-with-TYPSTRN-in-Optistruct1.pdf

    Unable to find an attachment - read this blog

  • SSD
    SSD Altair Community Member
    edited June 2020

    Hi Simon Kriznik,

    Above file run perfectly.

    I tried to run with mine and curve starting with 0,360. It shows following error.

     

    *** ERROR # 3002 ***
      The first point (X1,Y1) specified on the TABLES1 bulk data entry ID=6
      is not located at the origin of the stress-strain curve.

     

    so, that is why I changed the first row to 0,0.

    What is the meaning of this error.

     

  • Simon Križnik
    Simon Križnik Altair Community Member
    edited June 2020

    Make sure to set  TYPE=PLASTIC and  TYPSTRN=1 on the MATS1 card.

    <?xml version="1.0" encoding="UTF-8"?>Error 3002.JPG

     

  • Adriano A. Koga
    Adriano A. Koga
    Altair Employee
    edited June 2020

    if you take a look at the MATS1 documentation in the Help, you will get that:

     

    TYPESTRN = 0 >> full stress x strain curve, starting from 0, 0 (strain, stress)

     

    TYPESTRN = 1 >> plastic curve only, starting from 0, yield_stress (plastic strain, stress)

     

    As stated in the reply above, you should prescribe your TABLES1 and TYPESTRN accordingly

  • SSD
    SSD Altair Community Member
    edited June 2020

    Thank you!!

    It helped me to solve another model with similar error.

     

    But, now this analysis shows following error:

     

    *** ERROR # 2985 ***
      Dependent DOF 2 of GRID 9321 cannot be converted to an
      independent DOF with AUTOMSET for this rigid configuration.
      There are not enough constraint equations to reformulate it.
      If RBODY is used in the model, it is getting overconstraint in the model.
      By adding 'DEBUG,REMOVRGD,1.', Optistruct would not create constraint
      on the dependend node of RBODY.

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