How Do You Calculate Shear Stress in a Circular Bar Under Axial Compression?

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SUMMARY

The discussion focuses on calculating shear stress in a circular bar subjected to axial compression. The specific parameters include a circular bar with a diameter of 0.05m and an axial load of 150,000 N. The formula for stress is established as Force divided by Area, emphasizing the need to identify the correct area and force components. Participants highlight the importance of understanding the distinction between normal stress and shear stress, particularly in relation to the applied force and the area of interest.

PREREQUISITES
  • Understanding of basic stress calculations (Force/Area)
  • Knowledge of shear stress concepts
  • Familiarity with circular cross-section geometry
  • Ability to resolve forces into components
NEXT STEPS
  • Study the derivation of shear stress formulas for circular bars
  • Learn about the relationship between axial load and shear stress
  • Explore the concept of normal stress versus shear stress
  • Investigate the impact of varying diameters on shear stress calculations
USEFUL FOR

Mechanical engineers, physics students, and professionals involved in structural analysis or materials science will benefit from this discussion on calculating shear stress in circular bars under axial loads.

Rieck2000
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Stress's for circular bar?
Calculate the maximum normal and shearing stresses

of a circular bar with diameter 0.05m and axial compression load of 150000 N ..

I know for stress = Force / Area, how do you solve for shear stress?
 
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Good evening Rieck and welcome to Physics Forums.

All stress is Force/Area, you just have to take the correct force and area.

Did you miss the lecture on shear stress?

Look at my diagram of your bar.

What is the stress on the area perpendicular to the applied force (area1)?
What is the stress parallel to the area perpendicular to the applied force?

What is the force applied to the area of section SS.

Can you resolve this applied force perpendicular and parallel to SS?

What is the area of SS

So what is the shear stress on SS?

If you can write down a formula for this shear in terms of P and the angle theta how do you find the maximum of an equation?
 

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there is no angle involved in this problem.
 
We can't help you if you don't help us.

What do you know about shear stress?
 

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