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Unformatted text preview: EAS 209 – Spring 2008 Instructor: Christine Human Gilberto Mosqueda 1/15/2008 1 Lecture 04 Lecture 4 -Stresses in two-force members In a two-force member under axial loading, the plane perpendicular to the member axis has only normal stresses, no shear stresses Transverse forces on bolts and pins result in only shear stresses on the plane perpendicular to bolt or pin axis What are the stresses on planes which are not perpendicular to the member axis? EAS 209 – Spring 2008 Instructor: Christine Human Gilberto Mosqueda 1/15/2008 2 Lecture 04 Stresses on oblique planes Consider again a two-force member under axial loading On a plane at angle θ to the normal plane, the force P can be resolved into components parallel and perpendicular to the plane The oblique plane has both normal and shear stresses θ θ sin cos P V P F = = 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 = = = = = = EAS 209 – Spring 2008 Instructor: Christine Human Gilberto Mosqueda 1/15/2008 3 Lecture 04...
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This document was uploaded on 02/08/2008.
- Spring '08