Shear force in a frame due to torsion?

In summary, the conversation discusses the use of a gear and motor to move a frame attached to a shaft. The speaker is trying to calculate the material strength needed to prevent shearing of the frame due to applied torque. They mention a load in the z direction and request help with the calculations.
  • #1
boganaut
2
0
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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  • #2
Is this a homework problem?
 
  • #3
Chestermiller said:
Is this a homework problem?

No, it's for a project.
 
  • #4
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.
 

Related to Shear force in a frame due to torsion?

1. What is shear force in a frame due to torsion?

Shear force in a frame due to torsion refers to the force that acts parallel to the cross-sectional area of a frame, resulting from the twisting or torsional deformation of the frame. It is caused by an external force or moment applied perpendicular to the longitudinal axis of the frame.

2. How is shear force in a frame due to torsion calculated?

The shear force in a frame due to torsion can be calculated using the equation T = Fs, where T is the applied torque, F is the shear stress, and s is the cross-sectional area of the frame. It is also dependent on the material properties of the frame, such as shear modulus and polar moment of inertia.

3. What factors affect the shear force in a frame due to torsion?

The shear force in a frame due to torsion is affected by several factors, including the magnitude and direction of the applied torque, the geometry and material properties of the frame, and the support conditions. Additionally, the presence of any discontinuities or openings in the frame can also influence the shear force.

4. What are the practical applications of understanding shear force in a frame due to torsion?

Understanding shear force in a frame due to torsion is crucial in the design and analysis of various structures, such as bridges, buildings, and machines. It ensures the structural integrity and stability of these systems, as well as helps in determining the appropriate materials and dimensions for optimal performance.

5. How can shear force in a frame due to torsion be minimized?

Shear force in a frame due to torsion can be minimized by using appropriate structural design and materials that can resist torsional deformation. This can include using cross-sectional shapes that are less susceptible to torsional forces, such as circular and square sections, as well as using materials with high shear strength and stiffness. Additionally, proper reinforcement and bracing can also help reduce the effects of shear force in a frame due to torsion.

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