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 main and secondary surfaces in a single main-secondary contact pair are designated below. For exceptions to output on the main surface, see About Contact Pairs in Abaqus/Standard.

The following topics are discussed:

This page discusses:

Mechanical Analysis–Nodal Quantities
Mechanical Analysis–Whole Surface Quantities
Heat Transfer Analysis
Coupled Thermal-Electrical Analysis
Fully Coupled Temperature-Displacement Analysis
Fully Coupled Thermal-Electrical-Structural Analysis
Coupled Pore Fluid-Mechanical Analysis–Nodal Quantities
Coupled Pore Fluid-Mechanical Analysis–Nodal Quantities in Enriched Elements
Coupled Pore Fluid-Mechanical Analysis–Whole Surface Quantities
Coupled Pore Fluid-Temperature-Mechanical Analysis–Nodal Quantities in Enriched Elements
Bond Failure Quantities

Mechanical Analysis–Nodal Quantities

CSTRESS: Field: yes History: yes .fil: yes .dat: yes
Contact pressure (CPRESS) and frictional shear stresses (CSHEAR). Output is also available on the main surface to the .odb file in a single main-secondary setting.
CSTRESSETOS: Field: yes History: no .fil: no .dat: no
Contact pressure (CPRESSETOS) and frictional shear stresses (CSHEARETOS) due to edge-to-surface contact constraints. Output is also available on the main surface to the .odb file in a single main-secondary setting.
CSTRESSERI: Field: yes History: no .fil: no .dat: no
Error indicators for the contact pressure (CPRESSERI) and frictional shear stresses (CSHEARERI). Output is also available on the main surface to the .odb file in a single main-secondary setting.
CDSTRESS: Field: yes History: yes .fil: yes .dat: yes
Viscous pressure (CDPRESS) and viscous shear stresses (CDSHEAR). Output is also available on the main surface to the .odb file in a single main-secondary setting.
CDISP: Field: yes History: yes .fil: yes .dat: yes
Contact opening (COPEN) and relative tangential motions (CSLIP).
CSLIPEQ: Field: yes History: no .fil: no .dat: no
Contact equivalent relative tangential motion.
CSL_NORMALIZED: Field: yes History: no .fil: no .dat: no
Normalized contact equivalent relative tangential motion for the small-sliding tracking approach in general contact.
CSLIP_PL: Field: yes History: no .fil: no .dat: no
Contact plastic relative tangential motions (CSLIP_PL1 and CSLIP_PL2).
CSLIP_PLEQ: Field: yes History: no .fil: no .dat: no
Contact equivalent plastic relative tangential motion.
CDISPETOS: Field: yes History: no .fil: no .dat: no
Contact opening (COPENETOS) and relative tangential motions (CSLIPETOS) for edge-to-surface contact constraints.
CFORCE: Field: yes History: no .fil: no .dat: no
Contact normal force (CNORMF) and frictional shear force (CSHEARF). Output is also available on the main surface to the .odb file in a single main-secondary setting.
CLINELOAD: Field: yes History: no .fil: no .dat: 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: Field: yes History: no .fil: no .dat: no
Contact nodal area for each node in contact or near an opposing surface, calculated as $A_{i} = Σ_{j = 1}^{n_{c o n t_i}} | c_{i j} | A_{j},$ where $n_{c o n t_i}$ is the number of potential contact constraints involving node $i$ , $A_{j}$ is the area of constraint $j$ , and $c_{i j}$ is a contact constraint coefficient.
CPOINTLOAD: Field: yes History: no .fil: no .dat: 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: Field: yes History: yes .fil: no .dat: no
Crack opening and relative tangential motions on cracked surfaces in enriched elements.
CRKSTRESS: Field: yes History: yes .fil: no .dat: no
Remaining residual pressure and tangential shear stresses on cracked surfaces in enriched elements.
CSTATUS: Field: yes History: no .fil: no .dat: no
Contact status. Output is also available on the main surface to the .odb file in a single main-secondary setting.
CSMAXSCRT: Field: yes History: yes .fil: no .dat: no
Maximum value of the maximum stress-based damage initiation criterion for cohesive contact up to the current increment.
CSQUADSCRT: Field: yes History: yes .fil: no .dat: no
Maximum value of the quadratic stress-based damage initiation criterion for cohesive contact up to the current increment.
CSMAXUCRT: Field: yes History: yes .fil: no .dat: no
Maximum value of the maximum separation-based damage initiation criterion for cohesive contact up to the current increment.
CSQUADUCRT: Field: yes History: yes .fil: no .dat: no
Maximum value of the quadratic separation-based damage initiation criterion for cohesive contact up to the current increment.
CSDMG: Field: yes History: yes .fil: no .dat: no
Damage variable for cohesive surfaces or for cracked surfaces in enriched elements.
CTANDIR: Field: yes History: no .fil: no .dat: no
Instantaneous contact tangent directions (CTANDIR1 and CTANDIR2).
PPRESS: Field: yes History: yes .fil: yes .dat: yes
Fluid pressure for pressure penetration analysis.
SDV: Field: yes History: yes .fil: yes .dat: yes
Solution-dependent state variables.

Mechanical Analysis–Whole Surface Quantities

CFN: Field: no History: yes .fil: yes .dat: yes
Total force due to contact pressure (CFNn, n = 1, 2, 3).
CFNM: Field: no History: yes .fil: no .dat: no
Magnitude of total force due to contact pressure.
CFS: Field: no History: yes .fil: yes .dat: yes
Total force due to frictional stress (CFSn, n = 1, 2, 3).
CFSM: Field: no History: yes .fil: no .dat: no
Magnitude of total force due to frictional stress.
CFT: Field: no History: yes .fil: yes .dat: yes
Total force due to contact pressure and frictional stress (CFTn, n = 1, 2, 3).
CFTM: Field: no History: yes .fil: no .dat: no
Magnitude of total force due to contact pressure and frictional stress.
CICPS: Field: no History: yes .fil: no .dat: no
The scalar integration of the contact pressure over the surface.
CMN: Field: no History: yes .fil: yes .dat: yes
Total moment about the origin due to contact pressure (CMNn, n = 1, 2, 3).
CMNM: Field: no History: yes .fil: no .dat: no
Magnitude of total moment about origin due to contact pressure.
CMS: Field: no History: yes .fil: yes .dat: yes
Total moment about the origin due to frictional stress (CMSn, n = 1, 2, 3).
CMSM: Field: no History: yes .fil: no .dat: no
Magnitude of total moment about the origin due to frictional stress.
CMT: Field: no History: yes .fil: yes .dat: yes
Total moment about the origin due to contact pressure and frictional stress (CMTn, n = 1, 2, 3).
CMTM: Field: no History: yes .fil: no .dat: no
Magnitude of total moment about the origin due to contact pressure and frictional stress.
CAREA: Field: no History: yes .fil: yes .dat: yes
Total area in contact.
CTRQ: Field: no History: yes .fil: yes .dat: 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: Field: no History: yes .fil: yes .dat: yes
Center of the total force due to contact pressure (XNn, n = 1, 2, 3).
XS: Field: no History: yes .fil: yes .dat: yes
Center of the total force due to frictional stress (XSn, n = 1, 2, 3).
XT: Field: no History: yes .fil: yes .dat: yes
Center of the total force due to contact pressure and frictional stress (XTn, n = 1, 2, 3).

Heat Transfer Analysis

HFL: Field: yes History: yes .fil: yes .dat: yes
Heat flux per unit area leaving the secondary surface.
HFLA: Field: yes History: yes .fil: yes .dat: yes
HFL multiplied by the nodal area.
HTL: Field: yes History: yes .fil: yes .dat: yes
Time integrated HFL.
HTLA: Field: yes History: yes .fil: yes .dat: yes
Time integrated HFLA.

Coupled Thermal-Electrical Analysis

ECD: Field: yes History: yes .fil: yes .dat: yes
Electrical current per unit area.
ECDA: Field: yes History: yes .fil: yes .dat: yes
ECD multiplied by the nodal area.
ECDT: Field: yes History: yes .fil: yes .dat: yes
Time integrated ECD.
ECDTA: Field: yes History: yes .fil: yes .dat: yes
Time integrated ECDA.
HFL: Field: yes History: yes .fil: yes .dat: yes
Heat flux per unit area leaving the secondary surface.
HFLA: Field: yes History: yes .fil: yes .dat: yes
HFL multiplied by the nodal area.
HTL: Field: yes History: yes .fil: yes .dat: yes
Time integrated HFL.
HTLA: Field: yes History: yes .fil: yes .dat: yes
Time integrated HFLA.
SJD: Field: yes History: yes .fil: yes .dat: yes
Heat flux per unit area due to electrical current.
SJDA: Field: yes History: yes .fil: yes .dat: yes
SJD multiplied by the nodal area.
SJDT: Field: yes History: yes .fil: yes .dat: yes
Time integrated SJD.
SJDTA: Field: yes History: yes .fil: yes .dat: yes
Time integrated SJDA.
WEIGHT: Field: yes History: yes .fil: yes .dat: yes
Weighting factor for heat distribution between the interface surfaces.

Fully Coupled Temperature-Displacement Analysis

HFL: Field: yes History: yes .fil: yes .dat: yes
Heat flux per unit area leaving the secondary surface.
HFLA: Field: yes History: yes .fil: yes .dat: yes
HFL multiplied by the nodal area.
HTL: Field: yes History: yes .fil: yes .dat: yes
Time integrated HFL.
HTLA: Field: yes History: yes .fil: yes .dat: yes
Time integrated HFLA.
SFDR: Field: yes History: yes .fil: yes .dat: yes
Heat flux per unit area due to frictional dissipation.
SFDRA: Field: yes History: yes .fil: yes .dat: yes
SFDR multiplied by the nodal area.
SFDRT: Field: yes History: yes .fil: yes .dat: yes
Time integrated SFDR.
SFDRTA: Field: yes History: yes .fil: yes .dat: yes
Time integrated SFDRA.
WEIGHT: Field: yes History: yes .fil: yes .dat: yes
Weighting factor for heat distribution between the interface surfaces.

Fully Coupled Thermal-Electrical-Structural Analysis

ECD: Field: yes History: yes .fil: yes .dat: yes
Electrical current per unit area.
ECDA: Field: yes History: yes .fil: yes .dat: yes
ECD multiplied by the nodal area.
ECDT: Field: yes History: yes .fil: yes .dat: yes
Time integrated ECD.
ECDTA: Field: yes History: yes .fil: yes .dat: yes
Time integrated ECDA.
HFL: Field: yes History: yes .fil: yes .dat: yes
Heat flux per unit area leaving the secondary surface.
HFLA: Field: yes History: yes .fil: yes .dat: yes
HFL multiplied by the nodal area.
HTL: Field: yes History: yes .fil: yes .dat: yes
Time integrated HFL.
HTLA: Field: yes History: yes .fil: yes .dat: yes
Time integrated HFLA.
SFDR: Field: yes History: yes .fil: yes .dat: yes
Heat flux per unit area due to frictional dissipation.
SFDRA: Field: yes History: yes .fil: yes .dat: yes
SFDR multiplied by the nodal area.
SFDRT: Field: yes History: yes .fil: yes .dat: yes
Time integrated SFDR.
SFDRTA: Field: yes History: yes .fil: yes .dat: yes
Time integrated SFDRA.
SJD: Field: yes History: yes .fil: yes .dat: yes
Heat flux per unit area due to electrical current.
SJDA: Field: yes History: yes .fil: yes .dat: yes
SJD multiplied by the nodal area.
SJDT: Field: yes History: yes .fil: yes .dat: yes
Time integrated SJD.
SJDTA: Field: yes History: yes .fil: yes .dat: yes
Time integrated SJDA.
WEIGHT: Field: yes History: yes .fil: yes .dat: yes
Weighting factor for heat distribution between the interface surfaces.

Coupled Pore Fluid-Mechanical Analysis–Nodal Quantities

PFL: Field: yes History: yes .fil: yes .dat: yes
Pore fluid volume flux per unit area leaving the secondary surface.
PFLA: Field: yes History: yes .fil: yes .dat: yes
PFL multiplied by the nodal area.
PTL: Field: yes History: yes .fil: yes .dat: yes
Time integrated PFL.
PTLA: Field: yes History: yes .fil: yes .dat: yes
Time integrated PFLA.

Coupled Pore Fluid-Mechanical Analysis–Nodal Quantities in Enriched Elements

GFVR: Field: yes History: yes .fil: no .dat: no
Fluid volume rate within the cracked surfaces in the enriched element.
PORPRES: Field: yes History: yes .fil: no .dat: no
Pore pressure within the cracked surfaces in the enriched element.
PORPRESURF: Field: yes History: yes .fil: no .dat: no
Pore pressure on the cracked surfaces in the enriched element.
LEAKVR: Field: yes History: yes .fil: no .dat: no
Leak-off flow rate on the cracked surfaces in the enriched element.
ALEAKVR: Field: yes History: yes .fil: no .dat: no
Accumulated leak-off flow volume on the cracked surfaces in the enriched element.

Coupled Pore Fluid-Mechanical Analysis–Whole Surface Quantities

TPFL: Field: no History: no .fil: yes .dat: yes
Total pore fluid volume flux leaving the secondary surface.
TPTL: Field: no History: no .fil: yes .dat: yes
Time integrated TPFL.

Coupled Pore Fluid-Temperature-Mechanical Analysis–Nodal Quantities in Enriched Elements

PORTEMP: Field: yes History: yes .fil: no .dat: no
Temperature within the cracked surfaces in the enriched element.

Bond Failure Quantities

DBT: Field: yes History: yes .fil: yes .dat: yes
Time when bond failure occurs.
DBS: Field: yes History: yes .fil: yes .dat: yes
All components of remaining stress in the failed bond.
DBSF: Field: yes History: yes .fil: yes .dat: yes
Fraction of stress that remains at bond failure.
BDSTAT: Field: yes History: yes .fil: yes .dat: yes
Bond state (varies from 1.0 to 0.0).
CSDMG: Field: yes History: yes .fil: yes .dat: yes
Damage variable.
OPENBC: Field: yes History: yes .fil: yes .dat: yes
Relative displacement behind crack when fracture criterion is met.
CRSTS: Field: yes History: yes .fil: yes .dat: yes
All components of critical stress at failure.
ENRRT: Field: yes History: yes .fil: yes .dat: yes
All components of strain energy release rate.
EFENRRTR: Field: yes History: yes .fil: yes .dat: yes
Effective energy release rate ratio.
CYCLE: Field: yes History: yes .fil: no .dat: no
Number of cycles to debond.