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Access: |
Ribbon: Design tab  Fasten panel Bolted Connection  and then click the Calculation tab.
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Tightness Factor
With a prestressed bolted connection, the distance between materials is undesirable (due to the bad quality of surface, for example) and this safety factor is introduced to prevent it. Tightness factor k = 1 + Ψ (Additional tightness factor Ψ = 0.5 - 1.5). Recommended values for bigger bolt diameters are 1.5. Values for smaller bolt diameters are 2.5. To ignore it, set the value to 1.
Force Input Factor
This factor is used in the calculation of the prestressed force. It takes into account the position of the working load in the connected materials. To ignore force input factor, use a value of 1.
Joint FrictionFactor
This factor is used in calculation of the working force. The size of friction force between various connected materials is taken into the account.
Thread Friction Factor, Head Friction Factor
These factors are used in the calculation of the required tightening moment. The friction force dependent on the thread material, nut/bolt material, and the connecting material is taken into account.