stress and strain Flashcards
What is the formula for calculating stress?
Stress = load / area
How is strain defined?
Strain = change in length / original length
What is the relationship between stress and strain described by?
Yannos modulus or modulus of elasticity
What does direct strain measure?
Direct strain measures deformation as a fraction of original length
What characterizes an elastic material?
Change in length is proportional to the load applied
What happens to a perfectly elastic material when the force is removed?
It immediately returns to its original length
What does a graph of stress against strain look like for a given material?
A straight line
What does the gradient of the stress-strain graph represent?
The modulus of elasticity or stiffness of the material
Fill in the blank: The value of the gradient in a stress-strain graph is a measure of _______.
[elasticity or stiffness]
