Chapter 6.2

Chapter 6.2 - Stress-Strain Behavior Elastic Plastic...

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6 MSE 2090: Introduction to Materials Science Chapter 6, Mechanical Properties Stress-Strain Behavior Elastic Plastic Stress Strain Elastic deformation Reversible : when the stress is removed, the material returns to the dimensions it had before the loading. Usually strains are small (except for the case of some plastics, e.g. rubber). Plastic deformation Irreversible : when the stress is removed, the material does not return to its original dimensions.
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7 MSE 2090: Introduction to Materials Science Chapter 6, Mechanical Properties Stress-Strain Behavior: Elastic Deformation E is Young's modulus or modulus of elasticity , has the same units as σ ,N/m 2 or Pa In tensile tests, if the deformation is elastic, the stress- strain relationship is called Hooke's law: Stress Strain Load Slope = modulus of elasticity E Unload σ = E ε Higher E higher “stiffness”
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8 MSE 2090: Introduction to Materials Science Chapter 6, Mechanical Properties Elastic Deformation: Nonlinear Elastic Behavior
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This note was uploaded on 02/14/2012 for the course MSE 2090 taught by Professor Leoindzhiglei during the Fall '10 term at UVA.

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Chapter 6.2 - Stress-Strain Behavior Elastic Plastic...

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