Vdi 2230 2021 ((link)) -

Determine the absolute minimum clamping force needed during operation to prevent joint separation, sealing leaks, or friction slippage under shear loads. Step 4: Calculate the force ratio ( ) and elastic compliances Compute the compliance of the bolt ( δBdelta sub cap B ) and the clamped parts ( δMdelta sub cap M

The total stress on the bolt during tightening (combined tensile and torsional stress) and during operation must not exceed the bolt material's yield point ( Rp0.2cap R sub p 0.2 end-sub vdi 2230 2021

To further advance the field of bolted joints and screw connections, future research and development should focus on: Determine the absolute minimum clamping force needed during