Chapter 6 Flashcards
1
Q
What is the definition of stress?
A
- Instantaneous load divided by the original specimen cross sectional area
- Material that is stressed first undergoes elastic or non-permanent deformation
2
Q
What is the definition of strain?
A
- Strain is the change in length (in the direction of the force applied) divided by the original length
3
Q
What is the definition of anelasticity?
A
- Anelastic is time dependent elasticity
- Elastic deformation will continue after the stress application, and upon load release, time is needed for complete recovery.
4
Q
What is the definition of elasticity?
A
- Elasticity is reversible deformation
5
Q
What is the definition of Plastic?
A
- A material that undergoes permanent deformation
6
Q
What is the relationship between stress and strain and which law describes this?
A
Stress (σ)= strain(ε) * Young’s modulus
σ=εE
- Hookes law describes the relationship between stress and strain
7
Q
What is the formula for engineering stress?
A
8
Q
What is the formula for engineering strain?
A
9
Q
What is the formula for shear stress?
A
10
Q
What is Hooke’s Law?
A
11
Q
What is the formula for the modulus of resilience?
A
12
Q
What is the formula for Modulus of Resilience for Linear Elastic Behaviour?
A
13
Q
What is the formula for Modulus of Resilience for Linear Elastic Behaviour, and incorporating Hooke’s Law?
A
14
Q
What is the formula for true stress?
A
15
Q
What is the formula for true strain?
A
