VDI 2230 (004): Bolt Elastic Resilience Ξ΄S Explained
VDI 2230 breaks a real bolt into a chain of series cylindrical segments to compute its total elastic resilience Ξ΄S. This article walks through the substitutional lengths and resilience formulas of the head, shank, free thread, engaged thread and nut region one by one, and explains the difference between DSV and ESV.