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]]>Yes, the buckling is calculated for a point force at the top of the column. You can’t add in any other loads; it’s purely an Euler buckling calculation.

If you want to add in lateral loads, or even the self-weight of the pole, and you want to add in the effect of the deflections, you need to do a frame analysis. You could use the Frame4 spreadsheet (which the Frame4-buckle spreadsheet is based on):

https://newtonexcelbach.com/2013/03/17/3dframe-ver-1-03-and-frame4-ver-3-07/

To get the non-linear deformation effects you would need to set up an iterative process and regenerate the pole coordinates at each step. It is quite easy to set up manually, then you can automate with VBA if you want to.

For temperature related curvature you could calculate the deformed shape due to temperature strains and use that as the initial shape in your iterative analysis.

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]]>Just a couple more questions:

– Where are the actual deflection distance values used to plot the figure in the ‘Plot’ worksheet? Is it Column L in the ‘Output’ worksheet?

– Is the buckling due to a vertical force on the column? I am actually working on deflection of a light pole due to lateral wind load. Does this spreadsheet apply to lateral wind load? How do you convert the wind speed data to the lateral load in Newtons?

– I also need to model the deflection of the light pole due to thermal radiation (i.e. the result of buckling due to temperature differential on the hot and cold side of the pole). Does this spreadsheet provide a close solution for this problem?

I would appreciate if you could point me in the direction to solve these problems.

Regards and thanks,

Manoj

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]]>https://newtonexcelbach.com/2014/11/02/section-properties-update/

Please ask if anything isn’t clear.

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]]>I am looking for a formula for deflection of a hollow tapered pole with hexadecagon (16 sided) polygon. How can the spreadsheet be modified to do this calculation?

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]]>I think I’ll replace the Wikipedia link with something a bit more graphic ðŸ™‚

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]]>Saluti

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]]>I have now uploaded a new version with FullSeriesCollection changed to SeriesCollection, 16 colour ranges, and marker colours set with RGB values. At the moment the colours are hard-coded in VBA, but I will change that to allow the colours to be read from the spreadsheet.

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