## 6.1. Autodyn-2D – Structured (IJK) Solvers

Autodyn Output Name | Internal Array | Lag-ALE | Euler | Shell | Godunov | FCT | SPH | Description | Note
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
X | XN | Node | Node | Node | Node | Node | Particle | X space coordinate |
Y | YN | Node | Node | Node | Node | Node | Particle | Y space coordinate |
X-VELOCITY | UXN | Node | Cell | Node | Cell | Cell | Particle | X component of velocity |
Y-VELOCITY | UYN | Node | Cell | Node | Cell | Cell | Particle | Y component of velocity |
X-FORCE | FX | Node |  | Node |  |  | Particle | X component of force |
Y-FORCE | FY | Node |  | Node |  |  | Particle | Y component of force |
NODE-MASS | PMASS | Node |  | Node |  |  |  | Nodal mass |
I.P.INDEX | RINTER | Node |  | Node |  |  |  | Interactive point index |
VOLUME | VOLN | Cell | Cell | Segment | Cell |  | Particle | Volume |
CELL-MASS | CMASS | Cell | Cell | Segment | Cell | Cell | Particle | Cell mass |
MASS | CMS |  |  |  | Cell | Cell |  | Material mass in cell | D
COMPRESS. | XMU | Cell | Cell |  | Cell | Cell | Particle | Compression | D
COMPRESS | CMU |  |  |  | Cell | Cell |  | Material compression | D
INT.ENERGY | EN | Cell | Cell |  | Cell | Cell | Particle | Internal energy | D
INT.ENERGY | CEN |  |  |  | Cell | Cell |  | Material internal energy | D
PRESSURE | PN | Cell | Cell |  | Cell | Cell | Particle | Pressure |
PSEUDO.V.Q | Q | Cell | Cell |  |  |  | Particle | Artificial viscosity |
DIS.ENERGY | ADE | Cell | Cell | Segment | Cell |  | Particle | Specific distortional energy |
DENSITY | DEN | Cell | Cell |  | Cell | Cell | Particle | Density |
TEMP. | TEMP | Cell | Cell | Segment | Cell | Cell | Particle | Temperature | D
TEMP | CTP |  |  |  | Cell | Cell |  | Material temperature | D
EFF.PL.STN | EPS | Cell | Cell | Segment | Cell |  | Particle | Effective plastic strain | C
E.P.S.RATE | EPSDOT | Cell | Cell | Segment | Cell |  | Particle | Effective plastic strain rate | C
EFFECT.STN | AFS | Cell | Cell | Segment | Cell |  | Particle | Effective strain | C
SOUNDSPEED | SSPD | Cell | Cell | Segment | Cell | Cell | Particle | Local sound speed |
DAMAGE | DAM | Cell | Cell | Segment | Cell |  | Particle | Damage | B
DIVERGENCE | DIV | Cell | Cell |  | Cell |  | Particle | Divergence |
ALPHA | ALPHA | Cell | Cell |  | Cell | Cell | Particle | Material model variable | A, D
ALPHA | CAL |  |  |  | Cell | Cell |  | Material Alpha | D
P.STRESS.1 | T11 | Cell |  |  |  |  | Particle | Total principal stress 1 |
P.STRESS.2 | T22 | Cell |  |  |  |  | Particle | Total principal stress 2 |
STRESS.12 | T12 | Cell |  |  |  |  | Particle | Total principal shear stress 12 |
STRESS TXX | TXX | Cell | Cell |  | Cell |  | Particle | Total stress tensor, XX component |
STRESS TYY | TYY | Cell | Cell |  | Cell |  | Particle | Total stress tensor, YY component |
STRESS TXY | TXY | Cell | Cell |  | Cell |  | Particle | Total stress tensor, XY component |
STRESS TTT | TTT | Cell | Cell |  | Cell |  | Particle | Total stress tensor, TT component |
MIS.STRESS | TVM | Cell | Cell |  | Cell |  | Particle | Von Mises stress |
YLD.STRESS | YIELD | Cell | Cell |  | Cell |  | Particle | Current yield stress |
EXXDOT | EXXC | Cell | Cell |  | Cell |  | Particle | Total strain rate, XX component |
EYYDOT | EYYD | Cell | Cell |  | Cell |  | Particle | Total strain rate, YY component |
EXYDOT | EXYD | Cell | Cell |  | Cell |  | Particle | Total strain rate, XY component |
P.STRAIN.1 | STN11 | Cell |  |  |  |  | Particle | Total principal strain 1 |
P.STRAIN.2 | STN22 | Cell |  |  |  |  | Particle | Total principal strain 2 |
P.STRAIN.3 | STN33 | Cell |  |  |  |  | Particle | Total principal strain 3 |
STRAIN.12 | STN12 | Cell |  |  |  |  | Particle | Total principal shear strain 12 |
P.ST.ANG | PSANG | Cell |  |  |  |  | Particle | Angle of principal stress |
VOID FRAC. | VOID |  | Cell |  | Cell |  |  | Volume fraction of void |
COVERED-V | FCOVRV |  | Cell |  |  |  |  | Volume cover fraction |
COVERED-I | FCOVRI |  | Cell |  |  |  |  | I-face cover fraction |
COVERED-J | FCOVRJ |  | Cell |  |  |  |  | J-face cover fraction |
DPDX | DPDX |  |  |  | Cell |  |  | Pressure slope in X direction |
DPDY | DPDY |  |  |  | Cell |  |  | Pressure slope in Y direction |
DRDX | DRDX |  |  |  | Cell |  |  | Density slope in X direction |
DRDY | DRDY |  |  |  | Cell |  |  | Density slope in Y direction |
DUXDX | DUXDX |  |  |  | Cell |  |  | X velocity slope in X direction |
DUXDY | DUXDY |  |  |  | Cell |  |  | X velocity slope in Y direction |
DUYDX | DUYDX |  |  |  | Cell |  |  | Y velocity slope in X direction |
DUYDY | DUYDY |  |  |  | Cell |  |  | Y velocity slope in Y direction |
HOOP STN. | STN1 |  |  | Segment |  |  |  | Hoop strain |
LONG. STN. | STN2 |  |  | Segment |  |  |  | Longitudinal strain |
HOOP.STR. | STR1 |  |  | Segment |  |  |  | Hoop stress |
LONG.STR. | STR2 |  |  | Segment |  |  |  | Longitudinal stress |
STR.RES.1 | SRES1 |  |  | Segment |  |  |  | Stress resultant in direction 1 |
STR.RES.2 | SRES2 |  |  | Segment |  |  |  | Stress resultant in direction 2 |
BEND.MOM.1 | BMOM1 |  |  | Segment |  |  |  | Bending moment in direction 1 |
BEND.MOM.2 | BMOM2 |  |  | Segment |  |  |  | Bending moment in direction 2 |
TRANS.SHR. | TSHEAR |  |  | Segment |  |  |  | Transverse shear |
THICKNESS | THICK |  |  | Segment |  |  |  | Thickness (of shell) |
SMOOTH.LEN | SML |  |  |  |  |  | Particle | SPH smoothing length |
VORTICITY | VOR |  |  |  |  |  | Particle | SPH vorticity |
OLDDENSITY | DENNM1 |  |  |  |  |  | Particle | Previous density for SPH |
CUTOFF.RAD | RCIT |  |  |  |  |  | Particle | SPH cutoff radius |
NO.NEIGH. | RNON |  |  |  |  |  | Particle | Number of SPH neighbors |
ABS.VEL | ABSVEL | Node | Cell | Node | Cell | Cell | Particle | Absolute velocity magnitude |
SOFT.SLOPE | HNORM | Cell |  |  |  |  | Particle | Crack softening slope |
FAIL.STRES | TFAIL | Cell |  |  |  |  | Particle | Crack softening failure stress |
DIL.PRESS | PDIL | Cell | Cell |  | Cell |  | Particle | Johnson-Holmquist dilatation press |
DIL.ENERGY | EDIL | Cell | Cell |  | Cell |  | Particle | Johnson-Holmquist dilatation energy |
EPSPRE | EPSPRE | Cell | Cell |  | Cell |  | Particle | RHT pre-softening plastic strain |
FRATE | FRATE | Cell | Cell |  | Cell |  | Particle | RHT strain rate enhancement |
RTHIRD | RTHIRD | Cell | Cell |  | Cell |  | Particle | RHT lode angle |
FCAP | FCAP | Cell | Cell |  | Cell |  | Particle | RHT elastic cap factor |
EPSDO | EPSDO | Cell | Cell |  | Cell |  | Particle | RHT strain rate at previous cycle |
PCOR11 | PCOR11 | Cell |  |  |  |  | Particle | AMMHIS pressure correction |
PCOR22 | PCOR22 | Cell |  |  |  |  | Particle | AMMHIS pressure correction |
PCOR33 | PCOR33 | Cell |  |  |  |  | Particle | AMMHIS pressure correction |
MASS FACT. | FMASS | Node |  |  |  |  | Particle | SPH joined face mass |
VTXX | VTXX | Cell | Cell |  | Cell |  | Particle | Viscoelastic stress |
VTYY | VTYY | Cell | Cell |  | Cell |  | Particle | Viscoelastic stress |
VTXY | VTXY | Cell | Cell |  | Cell |  | Particle | Viscoelastic stress |
IGTIME | IGTIME | Cell |  |  |  |  | Particle | Slow burn ignition time |
SBRCRT | SBRCRT | Cell |  |  |  |  | Particle | Slow burn reaction ratio |
INITIAL X | XN0 | Node |  | Node |  |  | Particle | Original X space coordinate |
INITIAL Y | YN0 | Node |  | Node |  |  | Particle | Original Y space coordinate |
GAS.PRESS | PGAS | Cell | Cell |  | Cell | Cell | Particle | Slow burn gass pressure |
FILL.DENS. | FILDEN | Cell | Cell |  | Cell | Cell | Particle | Slow burn fill density |
VAR.1 | VAR01 | X | X | X | X | X | X | User defined variable 1 |
VAR.2 | VAR02 | X | X | X | X | X | X | User defined variable 2 |
VAR.3 | VAR03 | X | X | X | X | X | X | User defined variable 3 |
VAR.4 | VAR04 | X | X | X | X | X | X | User defined variable 4 |
VAR.5 | VAR05 | X | X | X | X | X | X | User defined variable 5 |
VAR.6 | VAR06 | X | X | X | X | X | X | User defined variable 6 |
VAR.7 | VAR07 | X | X | X | X | X | X | User defined variable 7 |
VAR.8 | VAR08 | X | X | X | X | X | X | User defined variable 8 |
VAR.9 | VAR09 | X | X | X | X | X | X | User defined variable 9 |
VAR.10 | VAR010 | X | X | X | X | X | X | User defined variable 10 |
VAR.11 | VAR011 | X | X | X | X | X | X | User defined variable 11 |
VAR.12 | VAR012 | X | X | X | X | X | X | User defined variable 12 |
VAR.13 | VAR013 | X | X | X | X | X | X | User defined variable 13 |
VAR.14 | VAR014 | X | X | X | X | X | X | User defined variable 14 |
VAR.15 | VAR015 | X | X | X | X | X | X | User defined variable 15 |
VAR.16 | VAR016 | X | X | X | X | X | X | User defined variable 16 |
VAR.17 | VAR017 | X | X | X | X | X | X | User defined variable 17 |
VAR.18 | VAR018 | X | X | X | X | X | X | User defined variable 18 |
VAR.19 | VAR019 | X | X | X | X | X | X | User defined variable 19 |
VAR.20 | VAR020 | X | X | X | X | X | X | User defined variable 20 |

The index value for a given grid variable is N`name`, where `name` is the internal variable name. For example, if you wanted the index for x-velocity(UXN) it would be NUXN. This index could then be used in the various Autodyn functions (for example, GV(NUXN,IJK).

Release 18.2 - © ANSYS, Inc. All rights reserved.