Annex B, Example B1 of VDI 2230 Part 1:2015: the central bolt between the piston and piston rod of a hydraulic cylinder (tapped thread joint, concentric clamping and concentric loading, pulsating axial load), used to check the resilience, embedding, preload, working stress, fatigue, surface pressure and length of engagement results of the VDI 2230-1 single-bolt calculator point by point.
Annex B, Example B2 of VDI 2230 Part 1:2015: the bolts of a rigid flange coupling (through-bolt joint, transverse load carried by friction), used to check the required clamp load, resilience, embedding, preload, surface pressure, slipping and shearing results of the VDI 2230-1 single-bolt calculator point by point.
Annex B, Example B4 of VDI 2230 Part 1:2015: the necked-down bolt of a connecting-rod bearing cap (eccentric clamping and eccentric loading, angle-controlled tightening beyond the elastic limit), used to check the clamp loads, resilience, embedding, preload, surface pressure and slipping results of the VDI 2230-1 single-bolt calculator point by point.
The connecting-rod necked-down bolt of a textbook worked example (eccentric clamping and eccentric loading, angle-controlled tightening), used to check the clamp loads, resilience, preload, surface pressure and fatigue results of the VDI 2230-1 single-bolt calculator point by point.
User manual of the MechCalc VDI 2230-1 single-bolt joint calculator: what it can and cannot calculate, the inputs of the eleven cards, the calculation steps R0 to R13, the result criteria and the limits.
Of the six typical failure modes of a bolted joint, only one is the bolt being pulled apart. This article starts from how a bolted joint works and gives a checklist: which joints need the systematic VDI 2230 calculation, which can do with simplified preselection, and what the standard covers and does not cover.
A full VDI 2230 tapped thread joint (ESV/TTJ) worked example. Compared with the previous DSV example, it highlights the key ESV differences in the resilience calculation, the supplement to the clamped-part resilience in the load factor, the nut-region elastic modulus and the length of engagement check, and lists every input you need to re-run the case in the calculator.
A full VDI 2230 through-bolt joint (DSV) worked example, going through R0–R13 in all 14 steps. It includes the specific input parameters, the intermediate result of each step and the final safety factors, ties the theory of the previous 7 articles into one calculation chain, and lists every input you need to re-run the case in the calculator.
The upper half of the VDI 2230 calculation chain R1–R6 explained: the tightening factor αA, the three sources of the minimum clamping force FKerf, the choice of force-ratio Φ formula, preload loss (embedding + thermal expansion), and the derivation of the minimum and maximum assembly preload.
A detailed look at the core physical model of VDI 2230: the spring model (Federmodell), the elastic resiliences δS and δP, the joint diagram (Verspannungsschaubild), the physical meaning of the force ratio Φ, and the full derivation logic of the main equation Eq.16.