Cantilever Deflection Question
Cantilever Deflection Question
(OP)
I am an engineer for a crane and hoist manufacturer and at times we must design a bridge crane with a long overhang, which may have multiple loads. Is there any way to calculate deflection? I haven't found anything in Machinery's Handbook or other places.
Thanks.
Thanks.





RE: Cantilever Deflection Question
RE: Cantilever Deflection Question
RE: Cantilever Deflection Question
If you work for a crane manuf’er. you likely have a copy of the AISC Steel Manual around the office. Look at the Beam Diagrams and Formulas, probably #’s 21 & 22. As Btrueblood suggests, superposition works for this problem. Do each load calculation independently and plot the deflections at the 10th points along the canti. length, plus the deflections at the points of the loads, then just add the two deflections at each 10th point for the total deflection curve. There are several deflection formulas, one for max. deflection and others for deflection anyplace along the beam. But, there is more to this problem than just the canti. deflections under load. Someone must also be sure that these canti. beams are not over stressed and are stable under load. That’s part of the entire crane rail beam design process.
RE: Cantilever Deflection Question
another day in paradise, or is paradise one day closer ?
RE: Cantilever Deflection Question
RE: Cantilever Deflection Question
The equations in the Machinery's Handbook and in Roark's Equations for Stress and Strain almost certainly are based on the double integration method you were taught in college. Your beam is simply supported, making double integration fairly easy.
You were taught double integration method, right?
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JHG
RE: Cantilever Deflection Question
RE: Cantilever Deflection Question