lec2 - L2 Concept of Stress and Strain –cont • Last...

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Unformatted text preview: L2 Concept of Stress and Strain –cont. • Last class – Syllabus – Definition of stress • Normal stress • Shearing stress • Bearing stress Stress in Two Force Members Axial forces on a two force member result in only normal stresses on a plane cut perpendicular to the member axis. Transverse forces on bolts and pins -> only shear stresses on the plane perpendicular to bolt or pin axis. either axial or transverse forces may produce both normal and shear stresses with respect to a plane other than one cut perpendicular to the member axis. Stress on an Oblique Plane • Normal component: • Tangential component: θ sin P V = θ cos P F = • At equilibrium: distributed forces (P’) on any plane = force ( P). θ θ θ θ τ θ θ θ σ θ θ cos sin cos sin cos cos cos 2 A P A P A V A P A P A F = = = = = = Stress on an Oblique Plane (cont.) average normal and shear stresses on the oblique plane are: •Which plane produces maximum normal stress ?...
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lec2 - L2 Concept of Stress and Strain –cont • Last...

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