R
Rocco
Problem 30 of the Machine Design 6-Min Solutions book is the deflection analysis of a contrived welded structure. In the problem, there's a stubby 18 inch long beam that has two longer beams welded along its length at 6 and 12 inches respectively (sort of a tuning fork looking thing). Each of the longer beams are 48 inches long. Everything is square steel stock.
The question is to predict the deflection of the second long beam at its end. Everything is deflecting under its own weight. The deflection of the stubby beam is neglected, but its rotation is not.
In the solution, the author accounts only for the twist of the stubby piece due to the moments imparted by the two long beams. She does not account for the deflection of the long section under investigation as a cantilever under its own weight.
I agree with her calculation of the assembly's twist, but I think she should have also added in the sag of the long section...
Has anyone else done this problem? Any comments/insights to offer?
Thanks,
Rocco
The question is to predict the deflection of the second long beam at its end. Everything is deflecting under its own weight. The deflection of the stubby beam is neglected, but its rotation is not.
In the solution, the author accounts only for the twist of the stubby piece due to the moments imparted by the two long beams. She does not account for the deflection of the long section under investigation as a cantilever under its own weight.
I agree with her calculation of the assembly's twist, but I think she should have also added in the sag of the long section...
Has anyone else done this problem? Any comments/insights to offer?
Thanks,
Rocco