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Presentation of rel.0203

Author: Ingemar Persson (DEsolver)

Updates from rel.0103 to rel.0203

1. In a if_then_init-endif block also .or. and .and. are valid tests. Example

2. New input data command WRITE_CA_FILE which makes it possible to restore abnormally breaked simulations. E.g. CTRL-C is pressed by the user.

3. Read a fourth parameter under Damped_Tens. The last parameter is the length of the time integration of the first solution step.

4. Corrected an error in quasistatic method Damped_Tens. In some occations the method entered an infinite loop.

5. Remove the extra damping in x,z,f and k direction in quasistatic method Damped_Tens.

6. New input data parameter CHECK_IF_THEN_AT_0 which redefines how to interpret if_then-endif-statements. If CHECK_IF_THEN_AT_0 is given in the input data file it means: do not execute statements inside if_then-endif-statements in the input data reading phase, if the test is false. If CHECK_IF_THEN_AT_0 not is given in input data, all statements will be passed in the input data reading phase whether the test is true or false.

7. Read extension in property name in the following order: _111[rl]   _111   _11[rl]   _11   _1   _.
   Example:   model file   property file

8. Corrected an error, when the substituted text string was shorter than the name of the variable.  Example

9. Read all lpass? and hpass? with variables as arguments. Also consider changes in the input variables.

10. New main command intpl_track_irr3 which also reads the designed track geometry from the track irregularity file.

11. During calculation, make the working directory hidden. Example: .wdir_ca_??????. If the calculation fails make the working directory visible.

12. Write a warning if the vehicle tends to turn over. Allow the user to control the integration part via the tsim_param- command.

13. Calculate the frequency response curve in complex*16. The compilation flag -DCOMPLEX_DOUBLE must be set in the file $gensys/code/Makeoptions. N.B. this is not standard Fortran and may not work on all platforms.

14. Read the ident string in a ordinary read statement, in order to read idents containing commas, equal signs, spaces,,, etc.

15. Create also force variables in a coupling. The coupling forces are denoted c_name.Fx, c_name.Fy, c_name.Fz, c_name.Mk, c_name.Mk and c_name.Mp.   Example

16. Write an estimation of finish time on standard output during calculation.

17. Update the position of bodies with constraints of type conn_free_1, for animation in gplot.

18. Handle outprint of mode- and gp- files when m_rigid_36b is used.

19. Accept also mass type m_rigid_36b in command "func ad_acc_flex3"

20. New type of coordinate system e_var_bendrf according to Ruch. In e_var_bendrf the smooth parts of the transition curve have fixed lengths.

21. In the substructure files save_car1.ins, save_bog1.ins and save_axl1.ins all variables are saved both as a scalar and as a variable.

22. In the substructure files save_car1.ins check if the accelerations car$1b1.ay, car$1.m.ay, car$1b2.ay, car$1b1.az,,, etc. and positions car$1b1.y, car$1.m.y, car$1b2.y, car$1b1.z,,, etc. exists before try storing them on the MPdat-file.

23. In the substructure file wr_coupl_nra1.ins material wear according to Archard's wear model is calculated. Example of results is shown in wear plot.

24. New function "rolling_fatigue_1" which calculates rolling fatigue acc. to Anders Ekberg 011015. Example of results from a semi-stiff bogie is shown in plot 1. Example of results from a soft bogie is shown in plot 2.

1. New function func reverse, which makes it possible to create filters without time delay.

2. Command oper_var_id is replaced by var_id. Command var_id understands ambigous file references also at level PAGE and MAIN.

3. Substitutes $-variables in header-lines into the value of the scalar with the same name.

4. Read scalars as argument to tstart and tstop in command ftwz, stat, x_left,,etc.

5. Split the ident-line into two if there are too many characters.

6. New command EndDiagram and EndPage.

7. Do open an ident even if you get the error message "mp-file is newer than xxxx".

8. Add more information in the Draw Curve Popup Menu. The information are: the name of the ident, number of values in a curve and the name of the default X-axis.

9. New function import for reading columns from an ASCII-file.

10. New examples added in the end of the manual.

11. Exit program MPLOT gracefully, even if the user exits with Alt+F4 or exits by clicking on the window frame.

1. If started with a file as argument, use the file as argument to command read_runf.

2. Draw hidden lines as dotted lines.

3. New body command box_733 which have more nodes for the animation of the structural vibrations. Command box_733 also gives the user possibility to give individual coordinates for each corner of the box.

4. When animating a modal analysis, calculate the complex max. displacement. Scale each mode of vibration individually according the complex max. displacement.

5. When animating a time-domain simulation, plot the time dynamically.

6. A new menu which controls the plotting of forces and symbols.

7. Plot forces by arrows with numbers or just arrows.

8. Export the animation as a number of eps-files.

9. Exit program GPLOT gracefully, even if the user exits with Alt+F4 or exits by clicking on the window frame.

1. New input data parameters TOL_NODE_DMIN, TOL_NODE_DMAX, TOL_NODE_LMIN and TOL_NODE_LMAX which makes it possible for the user to define the tolerance in the node selection process when creating the tetrahedron.

2. New body command box_733 which have more nodes for the animation of the structural vibrations. Command box_733 also gives the user possibility to give individual coordinates for each corner of the box.

1. New optimization method RegulaFalsi1, which searches for goal_function= 0.

2. Reading new option -append_overwrite, which continue on an existing ident.
   

3. Possibility to break with file opti_stop added.

4. New command STOP_AFTER which stops a simulation after a number of loops.

5. If opti is started with -overwrite send it to the subprogram.

6. Reading a new option -nohup. When nohup is given, send a mail to the user when the job is finished.

Program KPF

1. New diagram no.30 which contains the roll angle coefficient. The roll angle coefficient is defined according to formula.
   The conicity for S1002 on UIC60 incl.1/40 is approximately 0.1 for small amplitudes at gauge 1435mm. Now compare the roll angle coefficient for an ideal conical profile with a constant conicity of 0.1 with the roll angle coefficient for S1002 on UIC60 incl.1/40.

2. New input data command LAMBDA_FILE where the user can choose to print the conicity table on an external file.

3. New input data command FI_AXLE_FILE where the user can choose to print the roll angle of the axle to a file.

Program GENFILE

1. A major revision of program GENFILE has been made:
   A popup menu for mouse button 3 has been added.
   Only three pushbuttons in the genfile window.
   A pulldown-menu has been added to program genfile.
   A command history is available under the Up- and Down- arrows.

Program FUNC

1. New input data parameter XVALUES_INCREASING which makes it possible for the user to choose how to treat the X-axle.

2. If input data consists of two files INFIL1 and INFIL2, check that the X-values coincide in all point. If not, interpolate from the X-axis which starts at the largest value.

3. Check number of columns read from INFIL1 and INFIL2, complain if not number of columns fits into the format given in FORMF1 and FORMF2.

Program MTABLE

1. List the percentiles in a resu-file.

2. Check the time-stamp of the *.print-file and *.mp-file and rerun program MPLOT if necessary.

3. Don't update the resu-, print- and mp-files if MPLOTF_FILE=' '.

4. New input data command WRITE_WARNINGS where the user can supress the output printing of warning messages.

5. New input data command FOLLOW_SECS where the user can specify a time how often the table should be updated.

6. Write a column with dates first. If the output should be sorted with respect to date write the following UNIX-command:
   sort -b +0 Wz_RMS.mtabler > Wz_RMS.sort_date.mtabler
   If the output should be sorted with respect to another column write the following UNIX-command:
   sort -b +n Master.mtabler > Master.sort_n.mtabler

Program RUNF_INFO

1. New input data out_file sends the output to a specified file.

1. Startup file .nedit
   Updated with new gensys-commands.
   New pattern "CALC_KeyWords" entered under Syntax Highlighting.
   Corrected the WordCount function.
   Mplot commands added as an own Language Mode.

2. diff_dir
   New option -r which compares the files in the directory recursively.

3. opman
   If no match is found script opman sends the command "man -k <expr>" to the system. If multiple matches are found, prompt for the section number.

4. u_script
   Let the user choose which Master-file he or she wish to copy from the verif- directory.

5. gen_defs
   Change directory G_intsim,,etc. to .intsim,,etc.

6. create_kpfr
   Create wheel/rail-geometry files in-line as a pre-process command.

7. kpf_strix_multi
   A script which automatically evaluates all STRIX rail-profiles stored in a directory.

1. A theory section has been written.

Checking the list of items from last meeting.

Following items were discussed at the meeting, and the goal is to include these items in rel.0203.

• In transition curve type Ruch make it possible to have smoothing over a fixt distance, instead of a relative value.

• Kinematic couplings between different coordinate systems.

• Make the reading of designed track geometry more condesed.

• Make it possibly to use {}-parenthesis everywhere in the input data file.

• Reading of property in a coupling should be made in a similar way as it is done when reading data to the wr_coupl-substructure files.

• Possibility to model vehicles without axle between the wheels.

• Introduce a possibility to give wheel and rail profiles directly in the input data file to program CALC.

• During the calculation in program OPTI or TSIM, make a prediction of how much time it will require to finish the task.
• In program MPLOT in interactive mode edit the diagrams with program NEDIT instead of the standard Motif-editor.

• As an option, paint the surfaces of the bodies in GPLOT.
  Hidden lines instead.

• Make it possible to write an animation in GPLOT in AVI or MPEG-format.
  Write several eps-files instead.

• A more detailed model of the carbody in GPLOT, containing more nodes interpolated from the FEM-results.
  Yes with "body box_733".

• Add possibility to write the value of an animated force.

• Resize or remember the size and position of the draw_deform-window. The push-buttons "Prev" and "Next" has elliminated the use of the draw_deform-window.

• In the draw_deform-window write only positive frequensis.

• In program NPICK print more information to standard output so the user can see that the program is running.

• Introduce an option in program PREDAT where it is possible to suppress the writing of a fodat-file, if the user is only interrested in the expanded files.
  Files can be expanded by using program OPTI instead.

• Extend the trax-data format so it will also incorporate the designed track geometry.

• Installation script for GENSYS which only installs the calculation parts in GENSYS, suppressing the linking of GPLOT and MPLOT in interactive mode.

• Translate part number 1 of the GENSYS documentation into HTML-format so it can be read on-line. Organize the documentation in HTML-format and the printed documentation in the same way, in order to make it easier to replace old documentation with new documentation from the computers harddrive.

Items to be included in a future release of GENSYS.

Following items were not discussed at the meeting, but they remain as low priority items to be included in a future release of GENSYS.

• Introduce a possibility to give wheel and rail profiles directly in the input data file to program CALC.

• Consider non-elliptical surfaces, by using FASTSIM with different flexibility parameters in different stripes of the contact surface, according to the Kik-Piotrowski method.

• Add possibility to calculate percentiles without creating a cumulative frequency function.

• In program MPLOT, introduce possibility to click on the coordinate axis for information and for possibility to change current scales.

• In program FRESP, select fstart, fstep and fstop automatically when an input Fourier spectra is read from program FTRANS.

• Create a local coordinate system which pitches in transition curves.

• Translate program MPLOT into double precision.

• Add possibility in program CALC to consider vertical curves.

• Possibility to automatically calculate ride index according to PCT and NMW.

• Add possibility in program GPLOT to animate results from program FRESP.

Demonstration of rel.0203

• Examine the different menus in the new genfile program.

• Modal analysis with in-line pre-processing of wheel/rail geometry, extract modal shapes from flexible bodies and calculation of the quasistatic position.

• Time-domain analysis in a curve without track irregularities.

• A non-linear model of a yaw-damper.