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Users Manual for Program VAMPIRE2GENSYS  

Table of Contents

Introduction
Input data commands
Example

Introduction

Program VAMPIRE2GENSYS translates a Vampire input data file into Gensys format.

Make the translation with the following steps:

1. Before running program VAMPIRE2GENSYS:
   • Make a copy of the Vampire input data file:
     cp Vampire_model_orig.veh Vampire_model_mod.veh
   • Open file Vampire_model_mod.veh with "xed" or "opdiff" and remove or change all special characters.
     Following special characters are not allowed:œ, ®, $, @ and ².
   • Under main-command *FRICTION, remove all coefficients of friction under tension.
   • Remove or comment out all couplings that in the .veh-file has been created with sub-command LINK.
2. Create file Master.vampire2gensysf, see the file in the Example below.
3. Run program vampire2gensys with command:

   vampire2gensys Master.vampire2gensysf 2>&1 | tee vampire2gensys.out

4. Open file vampire2gensys.out and check for potential errors and warnings.
5. Open file Gensys_model.tsimf and do some manual editing in the file:
   • Manually Copy the comments från the .veh-file and put a #-character in front of them
   • Remove the offset "Delta" for all couplings that has a given direction of action x,y,z,f,k,p or m.
   • Move dampers in the primary suspension to the center of the wheelset. Alternatively model the axleboxes as separate masses.
   • Manually create couplings in file Gensys_model.tsimf, that in the .veh-file has been created with sub-command LINK.
6. The UNIX stream editor "sed" can be used to make the names of the masses more human readable.
   E.g.:

   sed -e 's/\<mass0000\>/grd_1/g' \
       -e 's/\<mass0001\>/car_1/g' \
       -e 's/\<mass0002\>/bol_11/g' \
       -e 's/\<mass0003\>/sfr_11r/g' \
       -e 's/\<mass0004\>/sfr_11l/g' \
       -e 's/\<mass0007\>/bol_12/g' \
       -e 's/\<mass0008\>/sfr_12r/g' \
       -e 's/\<mass0009\>/sfr_12l/g' \
       Gensys_model.tsimf > Gensys_model_names.tsimf 

   N.B. The mass names "mass0001", "mass0002", "mass0003",,, etc. may be different in different models. The arguments to the "sed"-command must be modified accordingly.

Input data commands

Input data is read in free format, valid separators between the input values are <space>, <comma>, <tab>, <equal sign> or <carriage return>. The commands can be written both in lower and upper case letters. The operation of the program is controlled by the commands described below; some of the commands also need arguments.

INFIL

Vampire *.run-file
On the third line of the *.run-file program VAMPIRE2GENSYS expects to find the reference to the Vampire *.veh-file. If the name of the *.veh-file starts with the letters C: they will be removed from the file name.

Declared= Character*132    Default= Blank

UTFIL

Output written in Gensys format.

Declared= Character*132    Default= Blank

Example of an input data file

Following example: Master.vampire2gensysf can be used as a master file:

##
##      Input data for program VAMPIRE2GENSYS 
##

  INFIL= Vampire_model_mod.veh
  UTFIL= Gensys_model.tsimf