Rotating mechanical component that transmits torque and supports rotating elements in gearboxes and transmissions.
A shaft is a cylindrical rotating element in mechanical systems, primarily used in gearboxes and transmissions to transmit torque from one component to another while supporting gears, pulleys, or other rotating elements. It serves as the central structural member that maintains alignment and enables power transfer through rotational motion.
诱因 → 失效模式 → 工程缓解
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A shaft transmits torque and rotates with the connected components, while an axle primarily supports rotating elements without transmitting torque. Shafts are designed for torsional loads, while axles handle bending loads.
Shaft diameter is calculated using torsion formula: d = (16T/πτ)^(1/3), where T is torque and τ is allowable shear stress. Additional factors include fatigue loading, bending moments, and safety factors per ASME B106.1M.
Common causes include fatigue from cyclic loading, torsional overload, corrosion fatigue, improper heat treatment, stress concentrations at keyways or splines, and resonance at critical speeds.
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