Torsional and Warping Constant 9

[dik]

Does anyone have a good approximation for the Torsional and Warping constants for the following?

Thanks, in advance...

Rather than think climate change and the corona virus as science, think of it as the wrath of God. Feel any better?

-Dik

 

[JoelTXCive]

Why hasn't Smath taken off more? Me, and a few other people at my office are pretty die-hard users. I've even sent them $50 to $100 donations a couple times.

I just can't believe that some larger software company hasn't acquired them and marketed it heavily.

I think of all the cool things that could be done with that program if it could be integrated with Excel somehow. Or more graphing options. There seem to be so many opportunities to make a truly great product.

 

[dik]

There may be industry issues due to it being sourced from Russia. I dunno...

Rather than think climate change and the corona virus as science, think of it as the wrath of God. Feel any better?

-Dik

 

[dik]

Having problem with the XLSX file input. This is the SMath

and this is the error message:

I'm using Libreoffice and not Word... could that be the issue? "pfe" is the path\filename.ext and it's correct. Any suggestions? Dropdown list works well.




Rather than think climate change and the corona virus as science, think of it as the wrath of God. Feel any better?

-Dik

 

[RFreund]

Hey Dik. I'm not sure. I haven't seen that issue before. Could be related to Libreoffice as opposed to excel.
I actually don't use this function often. I think it just takes too long to load things in every time. Typically, I use it once to get values in a matrix and then just copy that matrix and keep the values in the SMath file. Obviously, this does nothing for you at the moment (sorry), but I'm sure you would have better luck on the SMath Forum.

 

[dik]

Thanks...

Rather than think climate change and the corona virus as science, think of it as the wrath of God. Feel any better?

-Dik

 

[IDS]

Returning to the original topic:

I have added an Excel front end to the Python section properties program linked by Celt83:

I have compared the results with output from the Strand7 FEA package and found close agreement.

The spreadsheet and python file are attached. Note that:

1. The spreadsheet requires the Python SectionProperties (+ meshpy, numpy, etc) to be installed and also pyxll (which is a commercial program)

2. The SectionProperties installation via pip didn't work for me (in Windows), but I found if I copied the sectionproperties folder into my active pyxll code folder, the code worked, other than plotting.

3. I haven't been able to get the plotting routines to work with Excel, in fact they usually cause a crash, so all calls to plot routines in the example functions have been commented out. The custom_shape function will however return all 64 section property values as a dynamic array.

Doug Jenkins
Interactive Design Services

http://newtonexcelbach.wordpress.com/

 

[dik]

Thanks, Doug

Rather than think climate change and the corona virus as science, think of it as the wrath of God. Feel any better?

-Dik

 

[IDS]

Updated spreadsheet at Section Properties update (requires pyxll).

Dik - if you provide the dimensions, I'd be happy to plug them in.


Doug Jenkins
Interactive Design Services

http://newtonexcelbach.wordpress.com/

 

[dik]

Thanks Doug... I've used my approximations; they're not critical, and have issued the drawing. I was looking for an easy methodology so I could incorporate it into my SMath programs. I've compared the calculated values with outputs from a 'real' program that generates section properties and am within about 30% on the low side.

Again, thanks very much; your input as well as the others is appreciated.

Rather than think climate change and the corona virus as science, think of it as the wrath of God. Feel any better?

-Dik