3 Axial force, F A (pipe force)Axial force, F A (pipe force) Transverse force, F QTransverse force, F Q Torsional moment, M TTorsional moment, M T Moment, M BMoment, M B Slide 14 3.

2 Axial force, F A (pipe force)Axial force, F A (pipe force) Transverse force, F QTransverse force, F Q Torsional moment, M TTorsional moment, M T Moment, M BMoment, M B Slide 13 Flanged Joint with Plane Bearing Face, Ex. 1 Axial force, F A (pipe force)Axial force, F A (pipe force) Torsional moment, M TTorsional moment, M T Moment, M BMoment, M B Slide 12 Flanged Joint with Plane Bearing Face, Ex. 2 Axial force, F AAxial force, F A Transverse force, F QTransverse force, F Q Moment of the plane of the beam, M ZMoment of the plane of the beam, M Z Slide 10 Rotation of Flanges Axial force, F A (pipe force)Axial force, F A (pipe force) Bending moment, M BBending moment, M B Internal pressure, pInternal pressure, p Slide 11 Flanged Joint with Plane Bearing Face, Ex.

1 Axial force, F AAxial force, F A Transverse force, F QTransverse force, F Q Moment of the plane of the beam, M ZMoment of the plane of the beam, M Z Slide 9 Beam Geometry, Ex. Choice of Calculation Approach Dependent upon geometryDependent upon geometry Cylindrical single bolted joint Beam connection Circular plate Rotation of flanges Flanged joint with plane bearing face Slide 7 Cylindrical Single Bolted Joint Axial force, F AAxial force, F A Transverse force, F QTransverse force, F Q Bending moment, M BBending moment, M B Slide 8 Beam Geometry, Ex. Range of Validity Steel BoltsSteel Bolts M4 to M39M4 to M39 Room TemperatureRoom Temperature Slide 6 2. Slide 3 Definitions Covers high-duty bolted joints with constant or alternating loadsCovers high-duty bolted joints with constant or alternating loads Bolted joints are separable joints between two or more components using one or more boltsBolted joints are separable joints between two or more components using one or more bolts Joint must fulfill its function and withstand working loadJoint must fulfill its function and withstand working load Slide 4 Aim of Calculation Determine bolt dimension allowing for: Strength grade of the boltStrength grade of the bolt Reduction of preload by working loadReduction of preload by working load Reduction of preload by embeddingReduction of preload by embedding Scatter of preload during tighteningScatter of preload during tightening Fatigue strength under an alternating loadFatigue strength under an alternating load Compressive stress on clamped partsCompressive stress on clamped parts Slide 5 1. Readers who wish to put the standard to use are urged to refer to the complete standard that contains all information, figures, etc.

Overview of VDI 2230 An Introduction to the Calculation Method for Determining the Stress in a Bolted Joint Slide 2 Important Note This summary of the VDI 2230 Standard is intended to provide a basic understanding of the method.

Vdi 2230 tightening factor