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*cul de sac*

*with this particular issue. Allow me to elaborate:*A beam of known geometry (length, depth, width, etc.) is being bent over a hollow cylinder. The beam has holes machined through at each end. The cylinder is hollow but has a tourniquet-style system attached (via string/rope) that when twisted can bend the beam over it. My question is, can I employ the flexural strain formula to determine how far each end needs to be pulled down via the tourniquet to achieve a desired strain? Does this approach make any logical sense in approaching the problem? I'd like to be able to guide the students in answering this question.

Any help would be greatly appreciated.