Stress Concentration Factors: shaft_transverse_hole
Stress concentration factors (Kt) for common shaft and plate geometries — stepped shafts, grooves, holes, keyways per Peterson's and Shigley's
| geometry type | r d | Kt bending (dimensionless) | Kt tension (dimensionless) | Kt torsion (dimensionless) | description | notes |
|---|---|---|---|---|---|---|
| shaft_transverse_hole | 0.05 | 2.9 | 3 | 2 | Round shaft transverse drilled hole d/D=0.05 | r_d column stores d/D ratio. Kt_tension~3.0 for small holes. Kt_bending from Peterson Fig. Kts_torsion~2.0 for d/D->0. Applied to weakened net section. |
| shaft_transverse_hole | 0.1 | 2.7 | 2.9 | 2 | Round shaft transverse drilled hole d/D=0.10 | Kt_tension and Kt_bending decrease slowly as d/D increases. Kts_torsion relatively stable near 2.0. |
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