Vdi 2230 2021 Hot! -

): Ensure the internal/external thread stripping strength exceeds the bolt's breaking load.

Part 1 focuses on a single isolated bolt. It assumes the external loads acting on the multi-bolt pattern can be broken down into forces acting on an individual joint. This part uses a highly structured, 13-step calculation algorithm to verify bolt integrity. Part 2: Multi-Bolt Connections (MBC)

(Bolt Compliance): The amount the bolt elongates under preload. fPf sub cap P vdi 2230 2021

sigma sub r e d end-sub equals the square root of sigma sub z squared plus 3 center dot tau squared end-root is less than or equal to f sub 0.2 center dot nu sigma sub r e d end-sub : Reduced (von Mises) stress. sigma sub z : Tensile stress from clamping. : Torsional stress from tightening torque. : Yield strength of the bolt material. : Utilization factor (typically for high-duty joints). 5. Why it Matters

As of January 2023, major OEMs (VW, BMW, Daimler) require VDI 2230:2021 compliance for all new drivetrain and chassis bolted joints. This part uses a highly structured, 13-step calculation

Accounting for these losses is essential for maintaining joint integrity over its lifetime.

This step determines the the joint must provide under all conditions to prevent failure. The required clamp load F_Kenf is the maximum of the forces needed to: sigma sub z : Tensile stress from clamping

: The 2021 version includes refined reference values for metric coarse and fine threads, as well as updated tightening torques for HV (high-strength) bolting and non-metal screws.


Moorhuhn - Winter Edition VERSION DATUM 27.02.2010 DLs 15282x	5.15 MB	DOWNLOAD VON GG24.CH