View Full Version : Contact forces in LSDYNA

Roberts, Jack C.
09-19-2005, 12:50 AM
Dear Rochelle,

We have been working with LSDYNA over the past 4 years to construct a
human torso. During this time we have run into many problems and have
had to resort "tricks" to get the program to do what we wanted. You may
want to try this. To display and view contact forces as calculated
through the contact definitions, a few new cards need to be included.
The *CONTACT card should have column 7 and/or 8 turned on (SPR MPR) for
the contacts of interest. Make sure *DATABASE_BINARY_INTFOR is defined.
Then when you type your syntax to run the simulation include
"s=filename" on the command line after the i=input.k. To view the
results from this interface force file in ls-post: File/Open/Interface
Force/[the filename given in the s=" " syntax]. This should get you


Jack C. Roberts, Ph.D.
Principal Professional Staff
The Johns Hopkins University
Applied Physics Laboratory
11100 Johns Hopkins Rd
Laurel, MD 20723-6099
Research Professor
Department of Mechanical Engineering
G.W.C. Whiting School of Engineering
122 Latrobe Hall/3400 N. Charles St.
Baltimore, MD 21218-2686