ef152-lec-2-3 - EF 152 Spring, 2009 Lecture 2-3 2 Module 2,...

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Unformatted text preview: EF 152 Spring, 2009 Lecture 2-3 2 Module 2, Lecture 3 Types of Forces: Axial, Shear, and Bending Axial Shear Bending Tension Compression EF 152 Spring, 2009 Lecture 2-3 3 Types of Forces: Tension, Compression, Shear Hurricane Katrina Stress A F = Strain o L L = For a Linear Elastic material, Hookes Law applies: E = E is Youngs Modulus, the Elastic Modulus, or the Modulus of Elasticity E EF 152 Spring, 2009 Lecture 2-3 4 Stress-Strain curves, steel and aluminum Aluminum 1. Ultimate Strength 2. Yield strength 3. Proportional Limit Stress 4. Rupture 5. Offset Strain (typically 0.002). Structural steel 1. Ultimate Strength 2. Yield Strength 3. Rupture 4. Strain hardening region 5. Necking region. EF 152 Spring, 2009 Lecture 2-3 5 Solids and How They Respond to Forces Tensile Strength Modulus of Elasticity 175x10 6 Diamond 14500 1.7x10 6 Human Tendon 160000 22000 Spider Silk 50000 1.2x10 6 Cotton 11000 10x10 6 Glass 30000 10.6x10 6 Aluminum Alloys 30000 11.6x10 6 Cast Iron...
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This note was uploaded on 04/07/2009 for the course EF 152 taught by Professor Ab during the Spring '08 term at University of Tennessee.

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ef152-lec-2-3 - EF 152 Spring, 2009 Lecture 2-3 2 Module 2,...

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