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Error in table of type TABLES1

*** 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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Simon Križnik

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

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

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

<?xml version="1.0" encoding="UTF-8"?>

Adriano_Koga

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

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.