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

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2
Q

What is the equation for Young’s modulus?

A

E = σ / ε
Young’s modulus = stress / strain

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3
Q

What is the equation for stress (σ)?

A

σ = F / A
stress = force / area

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4
Q

What is the equation for strain (ε)?

A

ε = ΔL / L
strain = extension / original length

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5
Q

What is the equation for shear stress?

A

τ = F / A

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6
Q

What is the equation for shear strain?

A

γ = ΔL / L

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7
Q

What is the equation for the shear modulus?

A

G = τ / γ

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8
Q

What is shear?

A

Stress moving in opposite directions

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9
Q

How is factor of safety calculated?

A

FOS = τmax / τ

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