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Offline omorr  
#61 Posted : 06 June 2014 22:14:23(UTC)
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Originally Posted by: mkraska Go to Quoted Post
BTW, you also can use ODE.2, a wrapper for ode2, with preprocessing of the equation switched off.
Also, you can specify the initial conditions in Solve using Davide's at().

Thank you, just forgot about it out and found it afterwards.

Regards,
Radovan
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Offline mkraska  
#62 Posted : 09 June 2014 03:28:13(UTC)
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Yet another example from the maxima discussion list. It demonstrates use and limitations of the solver function Solve().
File Attachment(s):
Example Maxima cross.sm (22kb) downloaded 69 time(s).
mkraska attached the following image(s):
solve2.PNG
Martin Kraska

Pre-configured portable distribution of SMath Studio: https://smath.com/wiki/SMath_with_Plugins.ashx
Offline mkraska  
#63 Posted : 03 August 2014 14:45:44(UTC)
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The Maxima draw package has an experimental interface to the VTK visualization toolkit. It provides high performance 3D rendering.

Objects and options are very similar to those of the Gnuplot interface in the commands Draw2D() and Draw3D().

The current state of the Maxima plugin allows you to play around with VTK. Some limitations apply:
- The interactive viewer is opened as a separate window (not embedded in the sheet)
- The Maxima plugin does not wait for the viewer to be closed but gives up after some short time.
- Any SMath action while the viewer is open can generate a crash.
File Attachment(s):
vtk.sm (19kb) downloaded 74 time(s).
mkraska attached the following image(s):
vtk.png
Martin Kraska

Pre-configured portable distribution of SMath Studio: https://smath.com/wiki/SMath_with_Plugins.ashx
thanks 1 user thanked mkraska for this useful post.
on 03/08/2014(UTC)
Offline mkraska  
#64 Posted : 03 August 2014 15:30:13(UTC)
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Another example
File Attachment(s):
vtk1.sm (71kb) downloaded 69 time(s).
mkraska attached the following image(s):
vtk1.png
Martin Kraska

Pre-configured portable distribution of SMath Studio: https://smath.com/wiki/SMath_with_Plugins.ashx
thanks 1 user thanked mkraska for this useful post.
on 03/08/2014(UTC)
Offline omorr  
#65 Posted : 03 August 2014 18:24:12(UTC)
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Thank you Martin with keeping this up Good

I just played a bit (see the picture, please). I suppose this will be improved and I wish you all the best of luck in your efforts.
In the case I did not do something wrong here, but it seems that my example produces additional gnuplot windows.



Regards,
Radovan
File Attachment(s):
probavtk.sm (6kb) downloaded 61 time(s).
When Sisyphus climbed to the top of a hill, they said: "Wrong boulder!"
Offline mkraska  
#66 Posted : 04 August 2014 22:53:01(UTC)
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Originally Posted by: omorr Go to Quoted Post

In the case I did not do something wrong here, but it seems that my example produces additional gnuplot windows.

This is related to issue SS-189. Maxima is restarted and the plugin retries to execute the command. However, in the new Maxima process, the variable draw_renderer has the default value (gnuplot) instead of VTK.
Martin Kraska

Pre-configured portable distribution of SMath Studio: https://smath.com/wiki/SMath_with_Plugins.ashx
Offline mkraska  
#67 Posted : 07 August 2014 00:15:17(UTC)
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If the image file format is set to png, then the plot functions provide enhanced text capabilities now. See the attachment.
File Attachment(s):
Section Maxima Draw2D3D enhanced.sm (156kb) downloaded 69 time(s).
mkraska attached the following image(s):
sonderzeichen.PNG
Martin Kraska

Pre-configured portable distribution of SMath Studio: https://smath.com/wiki/SMath_with_Plugins.ashx
thanks 1 user thanked mkraska for this useful post.
on 07/08/2014(UTC)
Offline mkraska  
#68 Posted : 26 August 2014 00:25:27(UTC)
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Here comes life to the gradient symbol of the functions extensions plugin.
File Attachment(s):
Gradient.sm (29kb) downloaded 62 time(s).
mkraska attached the following image(s):
Gradient.PNG
Martin Kraska

Pre-configured portable distribution of SMath Studio: https://smath.com/wiki/SMath_with_Plugins.ashx
thanks 4 users thanked mkraska for this useful post.
on 26/08/2014(UTC),  on 26/08/2014(UTC),  on 26/08/2014(UTC),  on 29/01/2017(UTC)
Offline mkraska  
#69 Posted : 15 September 2014 16:11:34(UTC)
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In the attached sheet you find the construction of the element stiffness matrix and the element load vector for a shear-stiff plane horizontal beam finite element as used in this example.
File Attachment(s):
Balkenelement FEM Herleitung.sm (142kb) downloaded 76 time(s).
mkraska attached the following image(s):
fem-ele.PNG
Martin Kraska

Pre-configured portable distribution of SMath Studio: https://smath.com/wiki/SMath_with_Plugins.ashx
thanks 1 user thanked mkraska for this useful post.
on 27/01/2017(UTC)
Offline PompelmoTell  
#70 Posted : 05 February 2015 13:54:32(UTC)
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Originally Posted by: mkraska Go to Quoted Post
Example for beam calculation using separate integration intervals.


Hello,
I tried to use this method on a simple case with triangular distributed load.
I got the correct results for V and M moment but not for w and rotation (file1).
Using the same equations but divided into two separate systems ( equilibrium and elastic line) the result is correct (file 2)
anyone can give me any suggestions?

sergio
File Attachment(s):
file1.sm (27kb) downloaded 57 time(s).
file2.sm (28kb) downloaded 54 time(s).
Offline mkraska  
#71 Posted : 18 January 2017 19:00:15(UTC)
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This example produces Asby material property charts. The data has been taken from the online ressources for Buchmayr 2002. Besides the Maxima plugin and it's drawing functions this program also demonstrates the use of varous plugins by Davide (ComboBox List, DataExchange, Checkbutton List)

It was posted already 3 years ago, works with the current SMath+Maxima version (no symbolics involved). Just cosmetic changes (output as PNG instead of SVG)

MPC.png
Werkstoffdiagramme.zip (55kb) downloaded 73 time(s).
Martin Kraska

Pre-configured portable distribution of SMath Studio: https://smath.com/wiki/SMath_with_Plugins.ashx
thanks 2 users thanked mkraska for this useful post.
on 18/01/2017(UTC),  on 18/01/2017(UTC)
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