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Presentation of rel.0503

Author: Ingemar Persson (DEsolver)

Updates from rel.0403 to rel.0503

1. Stop the calculation if the same coupl-name has been defined twice.

2. Stop the simulation if any displacement is bigger than 1.e30.
   Stop the simulation if any results contains NaN

3. New pulldown menus in NEDIT simplifying the input data generation.

4. Evaluate expression if a name of a variable contains +,-,* or / signs. Example_1, Example_2

5. New big function "wr_coupl_pe2", which considers the change in rail profiles with a four point contact approximation.

6. Faster calculations.
   
   • Splitting the coupling-subroutines into two parts, for avoid using the main memory of the program.
   • New argument "interval" when interpolating in track irregularities and wheel/rail-geometry files, has been introduced. The "interval"-argument stores the interpolation position in the memory fields for current time-step, in order to reduce the search time in the next time step.
   
   
   • Store the factors YMtrac, ZMtrac, GMtrac, CMtrac in a special common block, instead of picking up their values from the main memory.
   
   
   • In the end of the simulation, print the degrees of freedom which have limit the time step during the integration.

   Ident	Tstop	rel.0403	rel.0503	fact	cpu/s
   tang_track	7.66	10.10	6.61	0.65	0.86
   tang_track_irr	7.66	12.59	8.52	0.67	1.11
   curve_R1000	6.83	12.19	9.02	0.74	1.32
   curve_R1000_irr	6.83	16.11	11.90	0.74	1.74
   curve_R200	15.28	29.71	22.78	0.76	1.49
   curve_R200_irr	15.28	34.63	20.37	0.59	1.33

7. Stop further execution if file calc_stop exists.

8. Pre- and post- process commands
   • Exit program calc with serious error, if a pre-process command not has exited successfully.
   • Write a warning message, if a post-process command not has exited successfully.
   • Make sure that the id-file is closed before starting any post-process command.

9. New definitions of the creepage.
   • Before was creepage calculated by dividing the slip with the speed of the car body. Now the slip is divided by the average speed of the wheelset and the rail.
   • When the vehicle changes the direction of travel the contact point will rotate 180 degree, in order to have the front of the contact point in the direction of travel.
     I.e. the longitudinal creepage is always positive when the wheel is standing still and sliding on the rail.

1. In command "func operp" do not create the variable, if the calculation of its value fails.

2. Button #1 will zoom in the diagram. Button #2 will show the position of the cursor. Button #3 will move the diagram.

1. Plotting of forces with figures in the wheel/rail-diagrams

2. Scales for adjusting the size of the arrows in the wheel/rail-diagrams

3. Write the size of the contact ellipses and the average contact stress in the wheel/rail-diagrams

4. Zoom in the wheel/rail-diagrams with mouse button #1. Move the wheel/rail-diagrams with mouse button #3.

5. Animation of kpfr-functions

Program KPF

1.	When reading the wheel- and rail- profiles: Interpolate in wheel profiles with true splines. Interpolate in rail profiles with semi-splines.
2.	Input data variable IPLOT3 can be given the value 4, which will lead to a creation of both a small contact pressure diagrams and a contour pressures diagram.
3.	A new diagram showing the equivalent conicity according to UIC 519 has been introduced. Example When calculating conicity according to UIC519 and the dr-function passes dr=0 several times. Move the wheelset to the most negative passage where dr=0. Example:   Wheel profile with negative conicity   The rr-rl-function   Lambda plot in rel.0403   Lambda plot in rel.0503   Conicity according to UIC519
4.	Updated the method in automatic two-point contact detection. If the surface is very rough, the contact zone can consist of many small spots. In this case only select the two major contact surfaces and omit the other areas, in order to avoid problems in the wear predicting code.
5.	Animation of kpfr-functions in gplot dr-function gam-function

Program KPF_PLOT

1.	Draw the plot in colors. Show the semi-spline-interpolation.

Program PRE_CONTACT

1.	When reading the wheel- and rail- profiles: Interpolate in wheel profiles with true splines. Interpolate in rail profiles with semi-splines. (Same as for program KPF)
2.	Write the pre_contactr-file in matlab-format for easy plotting. Example: contact surface on wheel contact surface on rail distance between wheel- and rail- surface KPF winklerbed contact pressure

Program FTRANS

1.	New filter FTRAPEZOID, where the user can define the transfer function in a trapezoid shape.

Program GENFILE

1.	The current directory field has been splitted into two fields. Directories in the left area and files in the right area. If a directory in the left area is selected its contants will be shown in the right field.
2.	Auto-completion with the TAB-key.
3.	Erase word to the left with key CTRL-backspace
4.	A new pulldown item "Extra command dialog" where the user also can enter commands. Commands via the li- and cd- button don't use the cmd-textField widget window, which mean that two commands can be given in parallel.
5.	New background menus similar to the li- and cd-button. If the window is big, it can be a far distance to reach the li- and cd-buttons.
6.	Stop program calc from the pulldown-menu.

Program GENTERM

1.	A new program which replaces xterm. Works like a xterm-window, but has a dialog popup window if mouse button 3 is pressed.

Library plotbibl

1.	Do not use setpagedevice for selecting paper in laser writer. Because no one is using a laser writer with different paper trays today, and the setpagedevice-command cuts the picture when the plot is shown gv.

Program trc_iplas2

1.

New program for translating EM80 results written in a file similar to the STRIX format. Automatic detection of designed curve geometry has been added. Possibility to remove out-of-round wheels on the trolley has been added. Plotting of the Fourier spectra of the original signal has been added. Example

Program trc_trac_plot

1.	Make a plot of a track written in trax_wdesign-format. Files having file-extension trax_wdesign will be associated with program trc_trac_plot.

Substruct wr_coupl_pe1.ins

1.	Copy the values of tral into rail_ in case the user wants to animate the motions in GPLOT.

Script exec_contact_tsim

1.	New script which: - extracts results from a tsim-calculation, - Creates a gitter over the contact surface in program PRE_CONTACT - Calculates normal and tangential contact forces in program CONTACT

Script gen_defs

1.	The first letters "G_" in all GENSYS-directories has been removed, in order to simplify the use of auto-completions with the TAB-key.

Script G_rename

1.	New script which removes the prefix "G_" from all subdirectories in current directory.

Script genrun_KDE

1.	New script for users using the KDE window manager. Together with the files ~/.kde/share/mimelnk/application/gensys.desktop and ~/.kde/share/applnk-redhat/.hidden/genrun_KDE.desktop Script genrun_KDE works in a similar way to genrun, i.e. reads the file .genrun