Deflection of beam in plastic range according to moment-curavutre properties of the section.
Deflection of beam in plastic range according to moment-curavutre properties of the section.
(OP)
Dear collages of the forum,
As the subject says, I'm interesting into know bibligraphy about how to calculate on steel profiles the elastic-plastic deflection of a beam according to the moment-curvature properties of the section.
Thank you very much.
Regards,
Juan José
As the subject says, I'm interesting into know bibligraphy about how to calculate on steel profiles the elastic-plastic deflection of a beam according to the moment-curvature properties of the section.
Thank you very much.
Regards,
Juan José






RE: Deflection of beam in plastic range according to moment-curavutre properties of the section.
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: Deflection of beam in plastic range according to moment-curavutre properties of the section.
Better only in the elastic range.
The use all the conventional methods of structural analysis and mechanics of solids.
RE: Deflection of beam in plastic range according to moment-curavutre properties of the section.
Regards,
jJ
RE: Deflection of beam in plastic range according to moment-curavutre properties of the section.
From that you work out the angle equivalent to that stress and the height at which it occurs along the beam, and hence the beams deflection.
Once the beam is fully plastic at some point then you have to have another think, and eventually you'll reach the fully plastic mechanism.
Despite what you say it is covered by classic texts, the first two I pulled off the shelves mention it at least in passing, and since it is easy to derive from first principles that is all that is needed.
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: Deflection of beam in plastic range according to moment-curavutre properties of the section.
Quando Omni Flunkus Moritati
RE: Deflection of beam in plastic range according to moment-curavutre properties of the section.
Thank you very much. I'm analyzing a bolted connection, but I use a frame model approach to obtain analytical formulations. I'm going to see what you recomended and I will say something.
Regards,
jJ
RE: Deflection of beam in plastic range according to moment-curavutre properties of the section.
isn't it "better" to have a connectin capable of carrying the loads elastically ? how big is this connection ?
Quando Omni Flunkus Moritati
RE: Deflection of beam in plastic range according to moment-curavutre properties of the section.
On construction applications, connections are calculated usually by the plastic resistance. You can see more information about this in the next link that I send in attach. In mechanical and aerospace engineering the problem is usually the high cycle fatigue; in structures submited to earthquakes, the designer has to garanty a good ductility of the connections against the low cycle fatigue (or so called plastic fatigue).
http://www.fgg.uni-lj.si/kmk/esdep/master/wg11/l06...
Regards,
jJ
RE: Deflection of beam in plastic range according to moment-curavutre properties of the section.
BA
RE: Deflection of beam in plastic range according to moment-curavutre properties of the section.
Thank you for your response. On my particular case I have a multilinear stress-strain relationship for steel (linear, yielding, hardening and post-critic). Once I have obtained the moment-curvature for rectangular cross section (I have yet performed this task), could you recomend to me any text where explains how to obtain deflections, as you mentioned?
Regards,
jJ
RE: Deflection of beam in plastic range according to moment-curavutre properties of the section.
Quando Omni Flunkus Moritati
RE: Deflection of beam in plastic range according to moment-curavutre properties of the section.
Brian C Potter, PE
http://simplesupports.wordpress.com
RE: Deflection of beam in plastic range according to moment-curavutre properties of the section.
Thank you very much. Just I was cheking this text, and is very good on the topic (and also covers things that another not).
Regards,
jJ
RE: Deflection of beam in plastic range according to moment-curavutre properties of the section.
If the curvature is known at discrete points along a beam, whether in the elastic or plastic range, the same methods may be used because they are simply different ways of applying geometry.
BA
RE: Deflection of beam in plastic range according to moment-curavutre properties of the section.
If you are interested in connections, have you looked at the Connections Conference Proceedings for the International Workshop on Connections in Steel Structures? There may be some articles of interest. http://www.aisc.org/content.aspx?id=29480
RE: Deflection of beam in plastic range according to moment-curavutre properties of the section.
Thank you very much for the link. The propose of the study is for research (PhD), and therefore is more theoric.
Regards,
jJ