Calculating Shaft Diameter for Bending & Torsion Loads

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SUMMARY

The calculation of shaft diameter for bending and torsion loads requires understanding the applied constraints and geometrical considerations. The relevant formulas involve determining bending or torsional stresses and deflections, where the cross-sectional area plays a crucial role. To ensure safety and performance, the diameter must be calculated based on yield stress limits or maximum deflection criteria. This approach guarantees that the shaft can withstand the specified loads without failure.

PREREQUISITES
  • Understanding of bending and torsional stress calculations
  • Familiarity with yield stress concepts
  • Knowledge of cross-sectional area impact on shaft design
  • Basic principles of mechanical engineering and material properties
NEXT STEPS
  • Research the formulas for calculating bending stress in shafts
  • Study torsional stress calculations and their implications
  • Explore yield stress limits for different materials
  • Learn about deflection criteria in mechanical design
USEFUL FOR

Mechanical engineers, design engineers, and anyone involved in the design and analysis of rotating shafts under bending and torsion loads.

teng125
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what formula should i use to calculate the shaft diameter according to the load due to bending and torsion??
 
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That depends on the applied contraints and geometrical considerations.

Consider the formula one uses to determine the bending or torsional stresses or deflections in which the cross-sectional area is a factor. If the constraint is yield stress or maximum deflection, then one can solve for a particular cross-sectional area (and from that, diameter) based on a maximum stress less than or equal to yield stress, or maximum deflection based upon some limit (which could be limited by yield stress or interaction with some other structure).
 

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