Stress and Strain to cause these deformations

Thread starter nerdeagle24
Start date Apr 3, 2019
Tags

Cause Strain Stress Stress and strain

In summary, stress is the force applied to a material, while strain is the resulting deformation. Stress causes a change in shape or size by forcing the atoms or molecules to move. The amount of strain is influenced by the material's properties and the magnitude and direction of stress. Controlled amounts of stress and strain can be beneficial for materials, but excessive amounts can lead to damage or failure. Engineers and scientists measure stress and strain through various techniques, such as tensile testing and compression testing.

Apr 3, 2019

nerdeagle24

Homework Statement: refer to picture

Relevant Equations: stress=F/A
strain=delta l/l

So I got a is elongation.
For part b and d, I am unsure where to start.
For c, i got compression
and for e, I put that the dotted line is the red block

Physics news on Phys.org

Apr 4, 2019

PhanthomJay

Science Advisor

Homework Helper

Gold Member

You have noted the the formula for axial stress in your relevant equations.

What causes stress and strain in materials?

Stress and strain in materials are caused by external forces acting on the material, such as stretching, compression, or twisting. These forces can be applied gradually or suddenly, and can result in changes in the shape or size of the material.

What is the difference between stress and strain?

Stress is the amount of force applied to a material per unit area, while strain is the measure of how much the material deforms in response to that force. Stress and strain are directly related, as the greater the stress applied, the greater the strain on the material.

How do stress and strain affect the strength of a material?

Stress and strain can affect the strength of a material in different ways. If the stress is below the material's yield strength, the material will return to its original shape once the force is removed. However, if the stress exceeds the yield strength, the material may experience permanent deformation or even fracture.

What factors influence the amount of stress and strain a material can withstand?

The amount of stress and strain a material can withstand depends on several factors, including the material's composition, structure, and temperature. Different materials have different strengths and abilities to resist deformation, and these properties can also be affected by the conditions under which the material is used.

How can we measure stress and strain in materials?

There are several methods for measuring stress and strain in materials, including tensile and compression tests, shear tests, and torsion tests. These tests involve applying controlled forces to the material and measuring the resulting deformation, allowing scientists to determine the material's mechanical properties and behavior under stress.