Hi,
I'm looking for a copy of the VDI 2230 (bolted assemblies) of 1977 (in order to estimate and understand the improvement of the last version (2003, and most particularly of resilience calculations)
I've used formula accepted by VDI2230 to determine the initial clamping force due to a angle tightening...But flexibilities of bolt and clamped parts are false, i think that the bolt head and the nut play a bigger role in calculations than it is in formula...but how?There is a factor=3 between...