Shear_in_Beams_MAE314

Shear_in_Beams_MAE31 - Shear Stress in Beams(6.1-6.4 MAE 314 S lid M h i Solid Mechanics C H Tran Shear Stress in Beams 1 Review Previous two

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Shear Stress in Beams (6.1-6.4) MAE 314 – Solid Mechanics C. H. Tran Shear Stress in Beams 1
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eview Review Previous two chapters only dealt with normal stresses caused by bending moments. Chapter 6 deals with shear stress caused by shear forces. Line of failure Shear Stress in Beams 2
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hear Stress in Beams Shear Stress in Beams Consider the effects of shear force ሺVሻ. lready know how to find resulting axial force and Already know how to find resulting axial force and moment due to stress σ x from Chapter 4. We have two more equations for shear stress: Total shear force in the y‐direction: otal shear force in the irection V dA xy Shear Stress in Beams 3 Total shear force in the z‐direction: 0 dA xz
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hear Stress in Beams Shear Stress in Beams Consider a cantilever beam composed of separate planks clamped at one end: Pure bending Shear force hear force causes tendency to “slide ” Shear force causes tendency to slide. Stresses are equal in horizontal and vertical directions. Shear Stress in Beams 4
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Shear Stress: Horizontal Let us consider the horizontal component ሺτ xz ൌ τ zx ሻ. Cut a section with cross‐sectional area a at a distance y above the y 1 centroid. FBD
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This note was uploaded on 07/07/2011 for the course MAE 315 taught by Professor Wu during the Spring '08 term at N.C. State.

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Shear_in_Beams_MAE31 - Shear Stress in Beams(6.1-6.4 MAE 314 S lid M h i Solid Mechanics C H Tran Shear Stress in Beams 1 Review Previous two

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