effect of angle on crippling stress

[Fstress]

Hi
My question is quite short but I have not found any knowledge yet.Question is "Is there any effect of the angles on crippling stress ?".I would be greatful,if anyone could sent me a book name .
thanks

 

[SWComposites]

what angle?
crippling of what material? what cross-sectional shape?
please be much more specific.

 

[RPstress]

W. F. McCombs addresses flange angles in his Supplement to Bruhn. I'm not sure how to acquire this strictly legitimately now that McCombs is deceased. There are a lot of .pdfs of varying quality knocking around if strict legitimacy is not an issue for you. On the other hand, a good library should be able to locate a copy. The section of interest is around about pp. 42/43.

http://www.thattechnicalbookstore.com/bx1881.htm

lists it at $40. That's rather steep considering what McCombs himself was charging. It's probably worth googling about for a better deal if you want to buy (it's basically worth it if you've got Bruhn).

 

[rb1957]

look up any text book for airplane strcutures (bruhn, niu, etc); look up "needham" or "Gerrard", these are the two main methods to analyze crippling.