wswain

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These are questions asked by wswain

Hello,

 

   What is the best way to create and save a library file with things like constants, procs, etc.

 

My work domain is the physical atmosphere and get tired of calling the many different scientific packs, copying over standard variables, running initition procs to start a new work book.

 

I'd like a worksheet, or library that has the ~10-20 basic scientific properties of dry air, most air, the reynolds calcs as a proc, etc.   A second call would be to standard material props lib used in our aero business.

 

I have not yet used Maple library tools to create a library and the initial documentation is a bit thin about differences and best practices.  I have tried to put this into the startup code section but then it's copy paste from file to file.  The best would be to load the file that is maintianed in one location, but used by many worksheet/docs.

 

I'd like to just have a basic "Initiate proc()" that would call a lib, or multiple lib/packages data to set all my globals, establish my physical prorperties, set the units system, etc.  upon opening and file initialization.   

 

I am also confused about "lib", ".M", ".mla" differences and modules versus libraries.   I do think I understand packages as sort of a proc library - just called packages ??   am I correct.  I have never tried to create or establish one. 

 

The issue for me with packages vs lib, modules and some confusion on the method procedures to set them up and get them properly instantiated when called.. 

 

So, do these lib, packages, modules have instantiation / initiation specifics to make them available when creating the package/lib  to use the with() command? 

 

I tried save and read with limited success.

 

Any recomendations welcome.  The last time I created libs was in C.  

 

Sorry if this is possibly confusing the different methods.  Is there a really good book/tutorial on file management, especially libraries, proc, module definition and storage benefits.  Best practices for maple?

 

Regards,

Bill

 

 

I am using Scientific notations and it constatly reminds me of the units and conversion challenges of using Maple.  I am using 2018 and am an engineer where units are our life blood for calculations.

 

Ive attached the file in ref where the constants shows J/Kg-mol   but outputs in a converted base unit of m^2 kg / s^2 mol K.  This modifies the value normally used by tables or other references as verification (often without units except in a column header)

 

The real problem is without units the caculated value 34.52 (or 0.03452) is meaningless when the real value has to be 287.05 if used without units or has correction applied within the SW internally.   

Units is my singular frustration with Maple as a really useful tool.  2018 moved this forward in so many ways which is very benficial.  I am really wondering if it may be how I'm setting the session up, or it is what it is.

Units_conversion_issue.mw

 

I have training video that shows the visualization window "docked" below the main window.   Can this work space arrangement be done in sim2017 ??  

Also I push the anchor button and nothing seems to happen 

I am trying to expand the ridgid beam model to flexible beam model to 1.) use fixed walled end to calulate cantilever deflection from a constant load, and visualize deflection; and then 2.) incorporate a compliant walled joint (rotary joint) with stiff rotational spring. To get angles of rotation; and finally simulate a periodic force and calc/plot all reactions/theta(t).

 

There is a video on line of a round beam with fixed-fixed ends and a translating weight with deflection visulized, but only a you tube vid can be found of this set-up.   It is close to what I need.

 

Lastly, if anyone knows how to send the diagram to maple as in A:=MapleSim:-___()

This method to transfer from Sim to maple with diagram and current session(#?) was done in a tutorial vid from MapleSim session. I am using Maple/MapleSim 2017 which is difficult to follow changes in workspace and commands from vids/tutorials.

PS. I have connected through opening a new worksheet and explicitly opening by filename. 

how can I sort a diff EQ by its degree.  Example 4th order with 4 being farthest left in normal reading format?

 

D4 + D3 + D2 +D + C = F(t)

 

my equation display is currently:

C + D + D2.......

Thanks,

Bill

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