Surface variables

You can request surface variable output to the data, results, or output database file. The letter “M” at the end of an output variable identifier designates the magnitude of the variable. Those variables that are output on both master and slave surfaces in a single master-slave contact pair are designated below. For exceptions to output on the master surface, see About contact pairs in Abaqus/Standard.

The following topics are discussed:

Related Topics
Surface output from Abaqus/Standard
Surface output in Abaqus/Standard and Abaqus/Explicit
In Other Guides
About contact pairs in Abaqus/Standard
Contact Property Models

The output variables listed below are available in Abaqus/Standard.

Mechanical analysis–nodal quantities

CSTRESS
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Contact pressure (CPRESS) and frictional shear stresses (CSHEAR). Output is also available on the master surface to the .odb file in a single master-slave setting.

CSTRESSETOS
.dat: no  .fil: no  .odb Field: yes  .odb History: no  

Contact pressure (CPRESSETOS) and frictional shear stresses (CSHEARETOS) due to edge-to-surface contact constraints. Output is also available on the master surface to the .odb file in a single master-slave setting.

CSTRESSERI
.dat: no  .fil: no  .odb Field: yes  .odb History: no  

Error indicators for the contact pressure (CPRESSERI) and frictional shear stresses (CSHEARERI). Output is also available on the master surface to the .odb file in a single master-slave setting.

CDSTRESS
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Viscous pressure (CDPRESS) and viscous shear stresses (CDSHEAR). Output is also available on the master surface to the .odb file in a single master-slave setting.

CDISP
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Contact opening (COPEN) and relative tangential motions (CSLIP).

CDISPETOS
.dat: no  .fil: no  .odb Field: yes  .odb History: no  

Contact opening (COPENETOS) and relative tangential motions (CSLIPETOS) for edge-to-surface contact constraints.

CFORCE
.dat: no  .fil: no  .odb Field: yes  .odb History: no  

Contact normal force (CNORMF) and frictional shear force (CSHEARF). Output is also available on the master surface to the .odb file in a single master-slave setting.

CLINELOAD
.dat: no  .fil: no  .odb Field: yes  .odb History: no  

Contact load due to line contact from edge-to-surface and radial edge-to-edge constraints in units of force per length. The normal (CLINELOADN) and frictional shear (CLINELOADT) components are available only for general contact to the .odb file.

CNAREA
.dat: no  .fil: no  .odb Field: yes  .odb History: no  

Contact nodal area. Output is also available on the master surface to the .odb file in a single master-slave setting.

CPOINTLOAD
.dat: no  .fil: no  .odb Field: yes  .odb History: no  

Contact load in units of force due to point contact from edge-to-edge constraints using the cross formulation. The normal (CPOINTLOADN) and frictional shear (CPOINTLOADT) components are available only for general contact to the .odb file.

CRKDISP
.dat: no  .fil: no  .odb Field: yes  .odb History: yes  

Crack opening and relative tangential motions on cracked surfaces in enriched elements.

CRKSTRESS
.dat: no  .fil: no  .odb Field: yes  .odb History: yes  

Remaining residual pressure and tangential shear stresses on cracked surfaces in enriched elements.

CSTATUS
.dat: no  .fil: no  .odb Field: yes  .odb History: no  

Contact status. Output is also available on the master surface to the .odb file in a single master-slave setting.

CSMAXSCRT
.dat: no  .fil: no  .odb Field: yes  .odb History: yes  

Maximum stress-based damage initiation criterion for cohesive surfaces.

CSQUADSCRT
.dat: no  .fil: no  .odb Field: yes  .odb History: yes  

Quadratic stress-based damage initiation criterion for cohesive surfaces.

CSMAXUCRT
.dat: no  .fil: no  .odb Field: yes  .odb History: yes  

Maximum separation-based damage initiation criterion for cohesive surfaces.

CSQUADUCRT
.dat: no  .fil: no  .odb Field: yes  .odb History: yes  

Quadratic separation-based damage initiation criterion for cohesive surfaces.

CSDMG
.dat: no  .fil: no  .odb Field: yes  .odb History: yes  

Damage variable for cohesive surfaces or for cracked surfaces in enriched elements.

CTANDIR
.dat: no  .fil: no  .odb Field: yes  .odb History: no  

Instantaneous contact tangent directions (CTANDIR1 and CTANDIR2).

PPRESS
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Fluid pressure for pressure penetration analysis.

SDV
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Solution-dependent state variables.

Mechanical analysis–whole surface quantities

CFN
.dat: yes  .fil: yes  .odb Field: no  .odb History: yes  

Total force due to contact pressure (CFNn, n = 1, 2, 3).

CFNM
.dat: no  .fil: no  .odb Field: no  .odb History: yes  

Magnitude of total force due to contact pressure.

CFS
.dat: yes  .fil: yes  .odb Field: no  .odb History: yes  

Total force due to frictional stress (CFSn, n = 1, 2, 3).

CFSM
.dat: no  .fil: no  .odb Field: no  .odb History: yes  

Magnitude of total force due to frictional stress.

CFT
.dat: yes  .fil: yes  .odb Field: no  .odb History: yes  

Total force due to contact pressure and frictional stress (CFTn, n = 1, 2, 3).

CFTM
.dat: no  .fil: no  .odb Field: no  .odb History: yes  

Magnitude of total force due to contact pressure and frictional stress.

CMN
.dat: yes  .fil: yes  .odb Field: no  .odb History: yes  

Total moment about the origin due to contact pressure (CMNn, n = 1, 2, 3).

CMNM
.dat: no  .fil: no  .odb Field: no  .odb History: yes  

Magnitude of total moment about origin due to contact pressure.

CMS
.dat: yes  .fil: yes  .odb Field: no  .odb History: yes  

Total moment about the origin due to frictional stress (CMSn, n = 1, 2, 3).

CMSM
.dat: no  .fil: no  .odb Field: no  .odb History: yes  

Magnitude of total moment about the origin due to frictional stress.

CMT
.dat: yes  .fil: yes  .odb Field: no  .odb History: yes  

Total moment about the origin due to contact pressure and frictional stress (CMTn, n = 1, 2, 3).

CMTM
.dat: no  .fil: no  .odb Field: no  .odb History: yes  

Magnitude of total moment about the origin due to contact pressure and frictional stress.

CAREA
.dat: yes  .fil: yes  .odb Field: no  .odb History: yes  

Total area in contact.

CTRQ
.dat: yes  .fil: yes  .odb Field: no  .odb History: yes  

Maximum torque that can be transmitted about the z-axis by a contact surface in an axisymmetric analysis with a friction coefficient of unity.

XN
.dat: yes  .fil: yes  .odb Field: no  .odb History: yes  

Center of the total force due to contact pressure (XNn, n = 1, 2, 3).

XS
.dat: yes  .fil: yes  .odb Field: no  .odb History: yes  

Center of the total force due to frictional stress (XSn, n = 1, 2, 3).

XT
.dat: yes  .fil: yes  .odb Field: no  .odb History: yes  

Center of the total force due to contact pressure and frictional stress (XTn, n = 1, 2, 3).

Heat transfer analysis

HFL
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Heat flux per unit area leaving the slave surface.

HFLA
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

HFL multiplied by the nodal area.

HTL
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Time integrated HFL.

HTLA
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Time integrated HFLA.

Coupled thermal-electrical analysis

ECD
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Electrical current per unit area.

ECDA
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

ECD multiplied by the nodal area.

ECDT
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Time integrated ECD.

ECDTA
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Time integrated ECDA.

HFL
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Heat flux per unit area leaving the slave surface.

HFLA
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

HFL multiplied by the nodal area.

HTL
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Time integrated HFL.

HTLA
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Time integrated HFLA.

SJD
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Heat flux per unit area due to electrical current.

SJDA
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

SJD multiplied by the nodal area.

SJDT
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Time integrated SJD.

SJDTA
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Time integrated SJDA.

WEIGHT
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Weighting factor for heat distribution between the interface surfaces.

Fully coupled temperature-displacement analysis

HFL
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Heat flux per unit area leaving the slave surface.

HFLA
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

HFL multiplied by the nodal area.

HTL
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Time integrated HFL.

HTLA
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Time integrated HFLA.

SFDR
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Heat flux per unit area due to frictional dissipation.

SFDRA
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

SFDR multiplied by the nodal area.

SFDRT
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Time integrated SFDR.

SFDRTA
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Time integrated SFDRA.

WEIGHT
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Weighting factor for heat distribution between the interface surfaces.

Fully coupled thermal-electrical-structural analysis

ECD
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Electrical current per unit area.

ECDA
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

ECD multiplied by the nodal area.

ECDT
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Time integrated ECD.

ECDTA
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Time integrated ECDA.

HFL
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Heat flux per unit area leaving the slave surface.

HFLA
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

HFL multiplied by the nodal area.

HTL
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Time integrated HFL.

HTLA
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Time integrated HFLA.

SFDR
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Heat flux per unit area due to frictional dissipation.

SFDRA
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

SFDR multiplied by the nodal area.

SFDRT
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Time integrated SFDR.

SFDRTA
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Time integrated SFDRA.

SJD
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Heat flux per unit area due to electrical current.

SJDA
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

SJD multiplied by the nodal area.

SJDT
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Time integrated SJD.

SJDTA
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Time integrated SJDA.

WEIGHT
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Weighting factor for heat distribution between the interface surfaces.

Coupled pore fluid-mechanical analysis–nodal quantities

PFL
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Pore fluid volume flux per unit area leaving the slave surface.

PFLA
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

PFL multiplied by the nodal area.

PTL
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Time integrated PFL.

PTLA
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Time integrated PFLA.

Coupled pore fluid-mechanical analysis–nodal quantities in enriched elements

GFVR
.dat: no  .fil: no  .odb Field: yes  .odb History: yes  

Fluid volume rate within the cracked surfaces in the enriched element.

PORPRES
.dat: no  .fil: no  .odb Field: yes  .odb History: yes  

Pore pressure within the cracked surfaces in the enriched element.

PORPRESURF
.dat: no  .fil: no  .odb Field: yes  .odb History: yes  

Pore pressure on the cracked surfaces in the enriched element.

LEAKVR
.dat: no  .fil: no  .odb Field: yes  .odb History: yes  

Leak-off flow rate on the cracked surfaces in the enriched element.

ALEAKVR
.dat: no  .fil: no  .odb Field: yes  .odb History: yes  

Accumulated leak-off flow volume on the cracked surfaces in the enriched element.

Coupled pore fluid-mechanical analysis–whole surface quantities

TPFL
.dat: yes  .fil: yes  .odb Field: no  .odb History: no  

Total pore fluid volume flux leaving the slave surface.

TPTL
.dat: yes  .fil: yes  .odb Field: no  .odb History: no  

Time integrated TPFL.

Bond failure quantities

DBT
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Time when bond failure occurs.

DBS
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

All components of remaining stress in the failed bond.

DBSF
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Fraction of stress that remains at bond failure.

BDSTAT
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Bond state (varies from 1.0 to 0.0).

CSDMG
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Damage variable.

OPENBC
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Relative displacement behind crack when fracture criterion is met.

CRSTS
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

All components of critical stress at failure.

ENRRT
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

All components of strain energy release rate.

EFENRRTR
.dat: yes  .fil: yes  .odb Field: yes  .odb History: yes  

Effective energy release rate ratio.