Aerospace Rivet Joint Bearing Correction: double shear correction
d0094 t0025 to d0125 t0032
Riveted joint bearing and shear correction data from MIL-HDBK-5J Tables 8.1.2.1(a) and 8.1.2.1(b) for solid protruding-head rivets. Three sub-tables: (1) unit bearing strength (lbs at Fbr=100 ksi) indexed by rivet diameter × sheet thickness — used to compute bearing allowable as P_br = value × (Fbr/100); (2) single-shear correction factor (dimensionless, 0–1) that reduces rivet shear allowable when the thinnest sheet t/D ratio is low; (3) double-shear correction factor (dimensionless, 0–1) that reduces rivet shear allowable based on middle sheet t/D. Values tested on aluminum rivets (AD, DD, B designations). Completes the rivet joint allowable calculation pipeline alongside rivet_specifications (which provides Fsu per rivet type).
| table type | record id | rivet diameter fraction | rivet diameter in (in) | sheet thickness in (in) | standard | unit | value |
|---|---|---|---|---|---|---|---|
| double shear correction | d0094 t0025 | 3/32 | 0.09375 | 0.025 | MIL-HDBK-5J Table 8.1.2.1(b) | dimensionless | 0.708 |
| double shear correction | d0094 t0032 | 3/32 | 0.09375 | 0.032 | MIL-HDBK-5J Table 8.1.2.1(b) | dimensionless | 0.814 |
| double shear correction | d0094 t0036 | 3/32 | 0.09375 | 0.036 | MIL-HDBK-5J Table 8.1.2.1(b) | dimensionless | 0.857 |
| double shear correction | d0094 t0040 | 3/32 | 0.09375 | 0.04 | MIL-HDBK-5J Table 8.1.2.1(b) | dimensionless | 0.891 |
| double shear correction | d0094 t0045 | 3/32 | 0.09375 | 0.045 | MIL-HDBK-5J Table 8.1.2.1(b) | dimensionless | 0.924 |
| double shear correction | d0094 t0050 | 3/32 | 0.09375 | 0.05 | MIL-HDBK-5J Table 8.1.2.1(b) | dimensionless | 0.951 |
| double shear correction | d0094 t0063 | 3/32 | 0.09375 | 0.063 | MIL-HDBK-5J Table 8.1.2.1(b) | dimensionless | 1 |
| double shear correction | d0125 t0020 | 1/8 | 0.125 | 0.02 | MIL-HDBK-5J Table 8.1.2.1(b) | dimensionless | 0.545 |
| double shear correction | d0125 t0025 | 1/8 | 0.125 | 0.025 | MIL-HDBK-5J Table 8.1.2.1(b) | dimensionless | 0.687 |
| double shear correction | d0125 t0032 | 1/8 | 0.125 | 0.032 | MIL-HDBK-5J Table 8.1.2.1(b) | dimensionless | 0.744 |
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