Stress and Strain Flashcards
1
Q
What are the 5 stages on a stress/strain graph?
A
Elastic region
Yield point
Plastic region
UTS
Failure
2
Q
What is the equation for Young’s modulus?
A
E = σ / ε
Young’s modulus = stress / strain
3
Q
What is the equation for stress (σ)?
A
σ = F / A
stress = force / area
4
Q
What is the equation for strain (ε)?
A
ε = ΔL / L
strain = extension / original length
5
Q
What is the equation for shear stress?
A
τ = F / A
6
Q
What is the equation for shear strain?
A
γ = ΔL / L
7
Q
What is the equation for the shear modulus?
A
G = τ / γ
8
Q
What is shear?
A
Stress moving in opposite directions
9
Q
How is factor of safety calculated?
A
FOS = τmax / τ