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Re: Rigid frame deflections (again)
[Subject Prev][Subject Next][Thread Prev][Thread Next]- To: "INTERNET:seaoc(--nospam--at)seaoc.org" <seaoc(--nospam--at)seaoc.org>
- Subject: Re: Rigid frame deflections (again)
- From: "Kathleen A. O'Brien" <wildwoman1(--nospam--at)compuserve.com>
- Date: Wed, 28 Jan 1998 23:53:27 -0500
>>I've got a copy of the Interchange article, and I used slope-deflection theory to derive the equation given there for the pinned=end frame. However, based on my derivation, the equation in Interchange is incorrect in that the factor in the denominator times Ibm should be "1" , not "2", which incidentally is what you quoted in your original note. (You remember, the one where you did not want to use a "fancy shmancy" $$ computer program for these "small and uncomplicated" frames) Well, it looks to me that defermining frame deflections, as opposed to forces and moments, for even simple rigid frames is not trivial and there does not appear to much information (equations) for these structures in the texts either. So a computer program appears to be the way to go, even for a statically determinant frame, if one's interest include deflections. << I will a t some point be getting some software. But: if I don't know how the formulas were derived or where they came from, how will I know if my answer is right? That's the part that spooks me. It seems you could make much bigger errors with a computer than without one. Just a thought. Review the slope-deflection method in my copious free time might be a good place to start Kate O'Brien
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