4.2.1.2. Classification of field output written in odb files

In this section, the various types of field output results that can be written in an output data base (odb) file and that can be postprocessed by Odb2Matlab are classified in various categories, depending on the way in which the extraction of the results is handled by Odb2Matlab. The category is defined based on the number and type of outputs which are associated with the specific field output variable identifier. Different Python script is generated automatically by Odb2Matlab for each category. Four possibilities exist for a field output variable identifier written in an odb file:

The result belongs to category 1. The output of category 1 corresponds to scalar values. Only a single numerical value is contained.

The result belongs to category 2. The output of category 2 corresponds to vector values. 4 numerical values are contained which are the 3 vector components and the vector magnitude (MAGNITUDE).

The result belongs to category 3. The output of category 3 corresponds to tensor values. 16 numerical values are contained which are the 6 tensor components and the following 10 tensor invariants: INV3, MAXINPLANEPRINCIPAL, MAXPRINCIPAL, MIDPRINCIPAL, MININPLANEPRINCIPAL, MINPRINCIPAL, MISES, OUTOFPLANEPRINCIPAL, PRESS, TRESCA.

The result belongs to one of the above categories but it cannot be postprocessed by Odb2Matlab.

In the following table, each column contains:

First column: Description of the output quantity

Second column: Field output variable identifier as specified in the input file

Third column: Field output variable identifier as specified in the Python script used for the extraction of the corresponding result from the odb file

Fourth column: Category of the field output variable as above.

DESCRIPTION

OUTPUT ID IN INPUT FILE

OUTPUT ID IN ODB FILE

CATEGORY

Coordinates

COORD

COORD

2

Nodal Flux Caused by Heat

NFLUX

NFL11

1

Stress

S

S

3

Stress Invariant

SINV

S

3

Section Force and Moment

SF

SF

3

Energy Density

ENER

CENER

1

DMENER

1

EENER

1

JENER

1

PENER

1

SENER

1

VENER

1

Energy (Summed over Element)

ELEN

ELASE

1

ELCD

1

ELCTE

1

ELDMD

1

ELJD

1

ELKE

1

ELPD

1

ELSD

1

ELSE

1

ELVD

1

Total Strain

E

E

3

Plastic Strain

PE

AC YIELD

1

PE

3

PEEQ

1

Creep Strain (Including Swelling)

CE

CE

3

Total Inelastic Strain

IE

IE

3

Total Elastic Strain

EE

EE

3

Section Thickness

STH

STH

1

Heat Flux Vector

HFL

HFL

2

Section Strain and Curvature

SE

SE

3

Saturation (Pore Pressure Analysis)

SAT

SAT

1

Mass Concentration (Mass Diffusion Analysis)

CONC

CONC

1

Gel (Pore Pressure Analysis)

GELVR

GELVR

1

Total Fluid Volume Ratio

FLUVR

FLUVR

1

Equivalent plastic strain components

PEQC

AC YIELD1

1

AC YIELD2

1

AC YIELD3

1

AC YIELD4

1

PEQC1

1

PEQC2

1

PEQC3

1

PEQC4

1

Pore Fluid Effective Velocity Vector

FLVEL

FLVEL

2

Displacement

U

U

2

Velocity

V

V

2

Acceleration

A

A

2

Reaction Force

RF

RF

2

Electrical Potential

EPOT

EPOT

1

Point Load

CF

CF

2

Coordinates

COORD

COORD

2

Pore or Acoustic Pressure

POR

POR

1

Reactive Fluid Volume Flux

RVF

RVF

1

Reactive Fluid Total Volume

RVT

RVT

1

Electrical Reaction Charge

RCHG

RCHG

1

Concentrated Electrical Nodal Charge

CECHG

CECHG

1

Electrical Reaction Current

RECUR

RECUR

1

Concentrated Electrical Nodal Current

CECUR

CECUR

1

Viscous Forces Due to Static Stabilization

VF

VF

2

Total Force

TF

AC YIELD

1

CF

2

LE

3

PE

3

PEEQ

1

PEMAG

1

RF

2

S

3

U

2

Principal strains

EP

E

3

Principal nominal strains

NEP

E

3

Principal logarithmic strains

LEP

E

3

Principal mechanical strain rates

ERP

ER

3

Principal values of deformation gradient

DGP

AC YIELD

1

CF

2

LE

3

PE

3

PEEQ

1

PEMAG

1

RF

2

S

3

U

2

Principal elastic strains

EEP

EE

3

Principal inelastic strains

IEP

IE

3

Principal thermal strains

THEP

THE

3

Principal plastic strains

PEP

PE

3

_________________________________________________________________________
Abaqus2Matlab - www.abaqus2matlab.com
Copyright (c) 2017 by George Papazafeiropoulos

If using this application for research or industrial purposes, please cite:
G. Papazafeiropoulos, M. Muniz-Calvente, E. Martinez-Paneda.
Abaqus2Matlab: a suitable tool for finite element post-processing.
Advances in Engineering Software. Vol 105. March 2017. Pages 9-16. (2017)
DOI:10.1016/j.advengsoft.2017.01.006



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