This is interesting..
"During the calculation of screw connections C Bach proceeded under the assumption that thread levels were broken off at the major diameter of the nut. He therefore also assumed, that the thread levels were stressed/strained by bending as well as by shearing forces. the larger of these two strains became the priority."
dose-1e.pdf.
Last edited by Kelly_Bramble; 03-06-2015 at 09:46 AM.