How Do I Calculate Stress, Strain & Young's Modulus?

  • Thread starter Thread starter BIGEYE
  • Start date Start date
  • Tags Tags
    Strain Stress
Click For Summary
SUMMARY

The discussion focuses on calculating tensile stress, strain, and Young's Modulus for a round bar subjected to a tensile load. The bar, measuring 800 mm in length with a cross-sectional area of 15 mm², experiences a tensile load of 6 kN and an elastic stretch of 3 mm. The calculated tensile stress is 400 MN/m², the strain is 0.00375 (or 0.375%), and the Modulus of Elasticity is 106.67 GN/m². The participant confirms that while the units may have been set up differently, the numerical answers are accurate.

PREREQUISITES
  • Understanding of tensile stress calculation
  • Knowledge of strain and its measurement
  • Familiarity with Young's Modulus and its significance
  • Basic principles of material mechanics
NEXT STEPS
  • Study the calculation of tensile stress using the formula: Stress = Force / Area
  • Learn about strain and its relationship to elongation and original length
  • Explore the concept of Young's Modulus and its application in material science
  • Investigate the effects of different materials on stress-strain behavior
USEFUL FOR

Engineering students, materials scientists, and professionals in mechanical engineering seeking to understand material properties and stress analysis.

BIGEYE
Messages
20
Reaction score
0
Appreciate if someone can take the time to check my answers to the following question. If wrong, could you point me in the right direction.

A round bar, 800 mm long, CSA 15 mm^2 experiences an applied tensile load of 6 kN and stretches elastically by 3 mm.a) Calculate the tensile stress in the bar.
My answer 400 MN/m^2

b) Calculate the strain on the rod.
My answer 0.00375 or 0.375%

c) Calculate the Modulus of Elasticity of the material.
My answer 106.67 GN/m^2
 
Physics news on Phys.org
The answers look correct, except I set the units up different, but the numbers seem okay.
 
Thnx for taking the time.
 

Similar threads

Confusion Calculating Young's Modulus
  • · Replies 5 ·
Replies
5
Views
2K
Calculating Young's Modulus from this Stress/Strain Graph
  • · Replies 29 ·
Replies
29
Views
8K
Young's Modulus and the Poisson Ratio of Aluminium
  • · Replies 1 ·
Replies
1
Views
2K
Calculate Stress & Strain from Length, Diameter & Load
  • · Replies 1 ·
Replies
1
Views
3K
Traction/ Compression stress and strain exercise
  • · Replies 1 ·
Replies
1
Views
2K
Engineering Calculating stress and strain in complex loading scenario
  • · Replies 3 ·
Replies
3
Views
2K
Thermal Expansion of a Wire Connected To a Rod
  • · Replies 6 ·
Replies
6
Views
3K
Relationship between thickness, width and length
  • · Replies 6 ·
Replies
6
Views
6K
Stress, Strain, and Sound in a Projectile Steel Rod
  • · Replies 2 ·
Replies
2
Views
2K
Calculating stress, strain and Young's modulus?
  • · Replies 2 ·
Replies
2
Views
6K