Shear stress on bolts (in different planes)

In summary, the conversation discusses the behavior of bolts in different planes when subjected to shear force. It is determined that in a perfect symmetry scenario, each side would experience F/2 shear force. However, bolts do not directly support shear force on the shank and instead rely on friction in the joint. The calculation of bolt strength is still important, but the shank should not touch the hole edges.
  • #1
sathishlmw
3
0
I am trying to understand the behavior of bolt in different
plane.

My doubt is when shear force acts on bolts in 2 different
plane simultaneously, does it share the shear force (F/2) or
each bolts experience the total force (F).

I am sure that if there is a bolt pattern on the same plane,
each bolt will contribute (develop individual reaction shear force).

Please find the attachment.
 

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  • #2
What you have drawn looks like a rod through a block. In this case, assuming perfect symmetry, the shear on each side should be F/2 assuming that each end is supported in the same manner.

It really is not a bolt problem because bolts don't support shear on the bolt shank, but rather the shear is carried on friction in the joint. It is common to calculate bolts to see if the shank section will support the shear load, but the bolt shank should not even touch the edges of the hole.
 
  • #3
Dr.D said:
What you have drawn looks like a rod through a block. In this case, assuming perfect symmetry, the shear on each side should be F/2 assuming that each end is supported in the same manner.

It really is not a bolt problem because bolts don't support shear on the bolt shank, but rather the shear is carried on friction in the joint. It is common to calculate bolts to see if the shank section will support the shear load, but the bolt shank should not even touch the edges of the hole.

Thank you Dr.D. I got it.
 

1. What is shear stress on bolts?

Shear stress on bolts is the force per unit area that is applied parallel to the cross-sectional area of the bolt, causing it to slide or shear along its axis.

2. How is shear stress calculated on bolts?

Shear stress on bolts can be calculated by dividing the applied force by the cross-sectional area of the bolt.

3. What are the factors that affect shear stress on bolts?

The factors that affect shear stress on bolts include the applied force, the size and material of the bolt, the angle of the force relative to the bolt's axis, and the presence of any pre-existing cracks or defects in the bolt.

4. How does shear stress on bolts vary in different planes?

Shear stress on bolts can vary in different planes, as the direction of the applied force and the orientation of the bolt itself can affect the distribution of shear stress along the bolt's length.

5. What are the potential consequences of high shear stress on bolts?

High shear stress on bolts can lead to failure or damage of the bolt, as well as the structure it is supporting. This can result in safety hazards, structural instability, and costly repairs or replacements.

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