L3 - Review: Chapter 1 - Concepts of stress (normal and...

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Review: Chapter 1 - Concepts of stress (normal and shear stresses) - Components of stress - Design considerations (factor of safety)
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Chapter 2 Axial loading (loads applied in the axial direction) P P
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• Under loading • stresses • strains (deformations) • statics analyses only are not sufficient • Deformable structures allows: • determination of member forces/reactions that are statically indeterminate • Stress distribution requires deformations in a member
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Normal Strain strain normal = A normal stress = = P σ : change in length L: original length ε : strain (percentage change in length) σ ε = δ L
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Normal Strain -cont. σ = 2 P 2 A = P A ε = δ L
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Normal Strain-cont. σ = P A ε = 2 δ 2 L = L
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Stress-Strain Test
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Ductile Materials - able to be drawn out into a thin wire; able to be deformed without losing toughness; pliable, not brittle. Yield strength
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This note was uploaded on 12/14/2010 for the course ENGR 2530 taught by Professor Lindaschadlerfeist during the Fall '08 term at Rensselaer Polytechnic Institute.

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L3 - Review: Chapter 1 - Concepts of stress (normal and...

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