Selecting shaft material and specifying processing 1

[PCS74]

All,

I am beginning the design of a drive shaft for a critical application. The shaft will be located in an outside environment and unprotected. It will subjected to bending, torsion and axial loads. Failure of the shaft will result in catastrophic damage.

After doing some reading here I have realized I need much more info to do this properly. My primary concern at this point is with respect to materials.

I need some guidance on what standards and books to begin reviewing with respect to proper shaft material selection and specification, processing and finishing with the goal of minimizing the possibility of fatigue failure.

In addition to book and standard recommendations, anything that may be of help would be greatly appreciated, i.e. websites, brochures, design guides, etc.

Thanks,

Chris S

 

[desertfox]

Hi PCS74

Try this site:-

http://inside.mines.edu/fs_home/jsteele/411/Lectures/L09ShaftsKeysSplinesVibs/L18ShaftDesign.pdf

Also this one where the above was linked to at the bottom of page.

http://www.roymech.co.uk/Useful_Tables/Drive/Shaft_design.html

desertfox

 

[unclesyd]

You are not giving much to go on as to the selection of a material.

Can you comeback with approximate physical dimensions?

The actual environmental conditions?

Even though this is a boat shafting company they have some very good data on several different materials that will work for an outside shaft.

Checkout the Shafting Data Brochure.

http://www.wbmetals.com/

 

[arunmrao]

"Failure of the shaft will result in catastrophic damage."

If you have such a critical mission,please do not rely completely on the tips,but rather,engage a professional engineer,this will save enormous amounts for you in all respects.



Learn the rules,so you know how to break them properly.
Dalai Lama

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[PCS74]

Gentlemen,

Thank you. I am the product design responsible engineer on this project.

With respect to the analysis I have no problems. With respect to specifying basic mechanical properties of the material I need, I have no problem. where I need help is with the materials selection, processing and finishing aspect of the design.

As you know there are numerous finished materials that can meet a given set of strength, stiffness, and corrosion requirements. However, not all of these materials will be correct for the job.

I am not looking for anyone to specify a material for me. What I do need are recommendations on books and standards that will allow me to develop the correct final material, process, and finish specifications.

thanks,

Chris S

 

[unclesyd]

Here are two papers on shaft and bearing design that will get you started.

http://www.flygt.ru/1265846.pdf

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19840018973_1984018973.pdf

 

[EdStainless]

Size is important, and so is the quantity. If you don't need many of these then overkill is the best option. There are a number of alloys that will give great performance under any conditions.

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Plymouth Tube

 

[metengr]

Best advice by arunmrao.