Residual clamp load at the interface
| Symbol | FKRmin |
|---|---|
| Unit | N |
| Attribute-ID | vdi_2230_residual_clamp_load_at_the_interface |
| Numeric ID | 12175 |
| Value Type | PMTechValue |
The residual clamp load at the interface FKRmin during relief or loading by the additional plate load FPA and after embedding in service.
The following options are available:
- User input, direct numerical input of the residual clamp load FKRmin.
- Acc. to VDI 2230, i.e. a calculation of the required minimum clamp load FKerf (R2) to ensure the friction grip FKQ, if necessary the sealing function FKP and a prevention of opening FKA. The residual clamp load FKRmin must be greater than or equal to the required minimum clamp load FKerf.
| FA | Axial load in the bolt in operation |
| FSA | Axial additional bolt load in operation |
| FPA | Additional plate load in operation |
| FV | Preload after assembly and embedding |
| FKRmin | Residual clamp load at the interface |
| FKerf | Required minimum clamp load |