Aerospace Rivet Joint Bearing Correction: unit bearing strength
d0125 t0250 to d0156 t0090
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 |
|---|---|---|---|---|---|---|---|
| unit bearing strength | d0125 t0250 | 1/8 | 0.125 | 0.25 | MIL-HDBK-5J Table 8.1.2.1(a) | lbs per 100ksi Fbr | 3,210 |
| unit bearing strength | d0156 t0032 | 5/32 | 0.15625 | 0.032 | MIL-HDBK-5J Table 8.1.2.1(a) | lbs per 100ksi Fbr | 509 |
| unit bearing strength | d0156 t0036 | 5/32 | 0.15625 | 0.036 | MIL-HDBK-5J Table 8.1.2.1(a) | lbs per 100ksi Fbr | 572 |
| unit bearing strength | d0156 t0040 | 5/32 | 0.15625 | 0.04 | MIL-HDBK-5J Table 8.1.2.1(a) | lbs per 100ksi Fbr | 636 |
| unit bearing strength | d0156 t0045 | 5/32 | 0.15625 | 0.045 | MIL-HDBK-5J Table 8.1.2.1(a) | lbs per 100ksi Fbr | 716 |
| unit bearing strength | d0156 t0050 | 5/32 | 0.15625 | 0.05 | MIL-HDBK-5J Table 8.1.2.1(a) | lbs per 100ksi Fbr | 795 |
| unit bearing strength | d0156 t0063 | 5/32 | 0.15625 | 0.063 | MIL-HDBK-5J Table 8.1.2.1(a) | lbs per 100ksi Fbr | 1,002 |
| unit bearing strength | d0156 t0071 | 5/32 | 0.15625 | 0.071 | MIL-HDBK-5J Table 8.1.2.1(a) | lbs per 100ksi Fbr | 1,129 |
| unit bearing strength | d0156 t0080 | 5/32 | 0.15625 | 0.08 | MIL-HDBK-5J Table 8.1.2.1(a) | lbs per 100ksi Fbr | 1,272 |
| unit bearing strength | d0156 t0090 | 5/32 | 0.15625 | 0.09 | MIL-HDBK-5J Table 8.1.2.1(a) | lbs per 100ksi Fbr | 1,431 |
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