Shear force in a frame due to torsion?

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SUMMARY

The discussion focuses on calculating the shear force in a frame due to torsion induced by a motor-driven gear. The key point is that the torque applied will create support reactions, and the shear stress at each plate connection should be calculated as half of the shear stress from the applied torque on the shaft. Standard equations from textbooks or online resources are recommended for determining the necessary material strength to prevent shearing of the frame.

PREREQUISITES
  • Understanding of torsion and shear stress in structural mechanics
  • Familiarity with torque calculations and their effects on frame structures
  • Knowledge of material strength and failure criteria
  • Ability to use standard engineering equations for shear stress calculations
NEXT STEPS
  • Research standard equations for calculating shear stress from applied torque on shafts
  • Learn about material selection criteria based on shear strength
  • Explore structural analysis techniques for frames under torsional loads
  • Investigate the effects of load direction on frame stability and material requirements
USEFUL FOR

Mechanical engineers, structural engineers, and project managers involved in designing frames subjected to torsional forces and ensuring material integrity under load.

boganaut
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joint1.jpg

The orange thing is a gear being turned by a motor, which is intended to move the frame the shaft is fixed to. I realize the applied torque is going to create support reactions, but I can't quite figure out how to calculate the needed material strength so that the frame won't shear.

All helps greatly appreciated.

Edit: I should probably add that there's a load attached to the frame in the z direction relative to the bottom right picture.
 
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Is this a homework problem?
 
Chestermiller said:
Is this a homework problem?

No, it's for a project.
 
The torque induced shear stress at each plate connection should be 1/2 of the shear stress from an applied torque calculated for a shaft of your dimensions using standard textbook/online available equations.
 

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