# /H3D/DT

Engine Keyword Writes the H3D results file at specified output frequency.

/H3D/DT

Tstart Tfreq

## Example

# start writing the h3d file at t=0.0 and create results every t=0.005
/H3D/DT
0.0 .005
# node velocity vectors
/H3D/NODA/VEL
# shell stress tensor for all integration points
/H3D/SHELL/TENS/STRESS/NPT=ALL
# shell plastic strain results at upper and lower integration points
/H3D/SHELL/EPSP/NPT=LOWER
/H3D/SHELL/EPSP/NPT=UPPER
/H3D/NODA/DMASS
# Equivalent strain rate for all elements
/H3D/ELEM/EPSD
# Solid element stress tensor.  Mean value if element has multiple integration points.
/H3D/SOLID/TENS/STRESS
# compress results with max change of 0.01%
/H3D/COMPRESS
0.01

## Definitions

Data Description SI Unit Example
Tstart Start time to begin writing the H3D file.
Tfreq Time frequency at which result data is writtent o the H3D file

## Comments

1. The h3d file name is Runname.h3d, where Runname is the Run Name (/RUN)
2. To define which results are saved in the h3d file see the /H3D/Element help options.
3. It is possible to save only certain parts to the h3d file using the /H3D/PART option.
4. The size of the h3d can be greatly reduced by using /H3D/COMPRESS.