Error: Time Step less or equal DTMIN for Solid Elements
Altair EmployeeHi,
i've got Error: Time Step less or equal DTMIN for Solid Elements...
here's my log:
FINAL TIME . . . . . . . . . . . . . . . . . . . 10.00000
TIME INTERVAL FOR TIME HISTORY PLOTS . . . . . . 0.1000000E-02
TIME STEP SCALE FACTOR . . . . . . . . . . . . . 0.9000000
MINIMUM TIME STEP . . . . . . . . . . . . . . . 0.000000
BRICK TIME STEP SCALE FACTOR . . . . . . . . . . 0.9000000
BRICK MINIMUM TIME STEP. . . . . . . . . . . . . 0.000000
MIN. TIME STEP FLAG (1:STOP RUN, 2:DELETE BRICK) 1
QUAD TIME STEP SCALE FACTOR. . . . . . . . . . . 0.9000000
QUAD MINIMUM TIME STEP . . . . . . . . . . . . . 0.000000
MIN. TIME STEP FLAG (1:STOP RUN, 2:DELETE QUAD). 1
SHELL TIME STEP SCALE FACTOR . . . . . . . . . . 0.9000000
SHELL MINIMUM TIME STEP. . . . . . . . . . . . . 0.000000
MIN. TIME FLAG (1:STOP, 2:DELETE, 3:SMALL STRAIN) 2
TRUSS TIME STEP SCALE FACTOR . . . . . . . . . . 0.9000000
TRUSS MINIMUM TIME STEP. . . . . . . . . . . . . 0.000000
MIN. TIME FLAG (1:STOP, 2:DELETE). . . . . . . . 0
BEAM TIME STEP SCALE FACTOR. . . . . . . . . . . 0.9000000
BEAM MINIMUM TIME STEP . . . . . . . . . . . . . 0.000000
MIN. TIME FLAG (1:STOP, 2:DELETE). . . . . . . . 0
SPRING TIME STEP SCALE FACTOR. . . . . . . . . . 0.9000000
SPRING MINIMUM TIME STEP . . . . . . . . . . . . 0.000000
MIN. TIME FLAG (1:STOP, 2:DELETE). . . . . . . . 0
AIRBAG TIME STEP SCALE FACTOR. . . . . . . . . . 0.9000000
AIRBAG MINIMUM TIME STEP . . . . . . . . . . . . 0.000000
MIN. TIME FLAG (1:STOP). . . . . . . . . . . . . 0
INTERFACE TYPE 7 TIME STEP SCALE FACTOR. . . . . 0.9000000
INTERFACE TYPE 7 MINIMUM TIME STEP . . . . . . . 0.000000
MIN. TIME FLAG(1:STOP, 2:REMOVE NODE FROM INTERF) 0
FVMBAG TIME STEP SCALE FACTOR. . . . . . . . . . 0.9000000
FVMBAG MINIMUM TIME STEP . . . . . . . . . . . . 0.000000
PRINTOUT CYCLE FREQUENCY . . . . . . . . . . . . -100
RESTART CYCLE FREQUENCY. . . . . . . . . . . . . 5000
MAXIMUM RESTART WRITE BEFORE OVERWRITE . . . . . 0
INVERS: INPUT DECK VERSION . . . . . . . . . . . 120
ITTYP : FLAG FOR TYPE OF T-FILE. . . . . . . . . 4
TIME FOR FIRST ANIMATION-FILE PLOT . . . . . . . 0.000000
TIME INTERVAL FOR ANIMATION-FILE PLOTS . . . . . 0.1000000E-02
SENSOR FOR ANIMATION-FILE PLOTS. . . . . . . . . 0
TIME INTERVAL FOR SENSOR ANIMATION-FILE PLOTS. . 0.000000
VARIABLE SAVED ON ANIMATION FILES (1: YES) :
PLASTIC STRAIN. . . . . . 0
DENSITY (SOLID ONLY). 1
SPECIFIC ENERGY . . . . . 0
HOURGLASS ENERGY. . . . . 0
TEMPERATURE (SOLID ONLY). 0
THICKNESS (SHELL ONLY). 0
PRESSURE (SOLID ONLY). 0
VON MISES . . . . . . . . 1
TURBULENT ENERGY (FLUID). 0
TURBULENT VISCOSITY(FLUID) 0
VORTICITY (FLUID) . . . . 0
VECTOR SAVED ON ANIMATION FILES (1: YES) :
VELOCITY VECTOR . . . . . 0
DISPLACEMENT VECTOR . . . 0
ACCELERATION VECTOR . . . 0
CONTACT FORCES. . . . . . 0
INTERNAL FORCES . . . . . 0
EXTERNAL FORCES . . . . . 0
SECTION RBY RWALL FORCES. 0
ROTATIONAL VELOCITY VECTOR 0
CONTACT PRESSURE (VECTORS) 0
SHELL TENSOR SAVED ON ANIMATION FILES (1: YES) :
MEMBRANE STRESS . . . . . 0
BENDING STRESS(MOMENT/T^2) 0
UPPER LAYER STRESS. . . . 0
LOWER LAYER STRESS. . . . 0
MEMBRANE STRAIN . . . . . 0
CURVATURE . . . . . . . . 0
UPPER LAYER STRAIN. . . . 0
LOWER LAYER STRAIN. . . . 0
NODAL MASS SAVED ON ANIMATION FILES (1: YES) : 0
KEEP DELETED ELEMENT (1: YES) : 0
INITIAL TIME STEP. . . . . . . . . . . . . . . . 0.000000
MAXIMUM TIME STEP. . . . . . . . . . . . . . . . 0.1000000E+31
PARALLEL ARITHMETIC ON
ALE GRID FORMULATION
--------------------
NUMBER OF INTERFACES TO BE ELIMINATED. . . . . . 0
NUMBER OF SOLID ELEMENT BLOCKS TO BE ELIMINATED 0
NUMBER OF QUAD ELEMENT BLOCKS TO BE ELIMINATED 0
NUMBER OF SHELL ELEMENT BLOCKS TO BE ELIMINATED 0
NUMBER OF TRUSS ELEMENT BLOCKS TO BE ELIMINATED 0
NUMBER OF BEAM ELEMENT BLOCKS TO BE ELIMINATED 0
NUMBER OF SPRING ELEMENT BLOCKS TO BE ELIMINATED 0
NUMBER OF SH_3N ELEMENT BLOCKS TO BE ELIMINATED 0
NUMBER OF SPH PARTICLES BLOCKS TO BE ELIMINATED 0
NUMBER OF RIGID LINKS. . . . . . . . . . . . . . 0
NUMBER OF ALE LINKS. . . . . . . . . . . . . . . 0
NUMBER OF NEW BOUNDARY CONDITIONS. . . . . . . . 0
01/06/2015
CYCLE TIME TIME-STEP ELEMENT ERROR I-ENERGY K-ENERGY T K-ENERGY R EXT-WORK MAS.ERR
0 0.000 0.5044E-06 SOLID 112 0.0% NaN NaN NaN 0.000 0.000
ANIMATION FILE: universal_jointA001 WRITTEN
**ERROR : TIME STEP LESS OR EQUAL DTMIN FOR SOLID ELEMENT 91
**ERROR : TIME STEP LESS OR EQUAL DTMIN FOR SOLID ELEMENT 97
**ERROR : TIME STEP LESS OR EQUAL DTMIN FOR SOLID ELEMENT 104
**ERROR : TIME STEP LESS OR EQUAL DTMIN FOR SOLID ELEMENT 105
**ERROR : TIME STEP LESS OR EQUAL DTMIN FOR SOLID ELEMENT 106
**ERROR : TIME STEP LESS OR EQUAL DTMIN FOR SOLID ELEMENT 108
**ERROR : TIME STEP LESS OR EQUAL DTMIN FOR SOLID ELEMENT 111
**ERROR : TIME STEP LESS OR EQUAL DTMIN FOR SOLID ELEMENT 112
**ERROR : TIME STEP LESS OR EQUAL DTMIN FOR SOLID ELEMENT 281
**ERROR : TIME STEP LESS OR EQUAL DTMIN FOR SOLID ELEMENT 282
**ERROR : TIME STEP LESS OR EQUAL DTMIN FOR SOLID ELEMENT 283
**ERROR : TIME STEP LESS OR EQUAL DTMIN FOR SOLID ELEMENT 284
**ERROR : TIME STEP LESS OR EQUAL DTMIN FOR SOLID ELEMENT 286
**ERROR : TIME STEP LESS OR EQUAL DTMIN FOR SOLID ELEMENT 287
**ERROR : TIME STEP LESS OR EQUAL DTMIN FOR SOLID ELEMENT 288
**ERROR : TIME STEP LESS OR EQUAL DTMIN FOR SOLID ELEMENT 289
No idea how to fix it. Thanks in advance.
Answers
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Hi, If you don't use /DT/BRICK... then DTMIN should be 1.E-30, it does not refer to the original time step of this element (look at defaults in the documentation please). On the other hand, if you experience 'TIME STEP LESS OR EQUAL ZERO' it's more likely a fatal error. Unfortunately, when Radioss detects that it is too late for it to output more (usefull information). Regards Rahul R
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Hi,
i am doing nonlinear geometric analysis in radioss, but error is coming as given in below.MESSAGE ID : 79** ERROR : RADIOSS IMPLICIT STOPPED DUE TO TIMESTEP LIMIT **ISTOP=-2ERROR TERMINATIONPlease suggest me to solve this error.Thanks,Regard,Narasimhamurthy0 -
Hi,
Please find attached troubleshooting methods for Istop = 2 error.
Regards
Rahul R
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HI,
Thank you,
I added the control card PARM,EXPERTNL,YES. Now error is not coming.
Regards,
Narasimhamurthy
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Narasimhamurthy,
Please always create new topics for your questions,
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