711_Mechanics SolutionInstructors_Sol.Manual-Mechanics_Materials_7e.book_Gere_light.1

711_Mechanics - 08Ch08.qxd 11:08 AM Page 705 SECTION 8.5 Combined Loadings 705 Solution 8.5-23 TOP OF THE CROSS SECTION(AT POINT A Cross section d2

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Unformatted text preview: 08Ch08.qxd 9/18/08 11:08 AM Page 705 SECTION 8.5 Combined Loadings 705 Solution 8.5-23 TOP OF THE CROSS SECTION (AT POINT A) Cross section d2 2 in. d1 d2 2 d2 I Thickness M Az d2 2I d4 1 12 I 2 t) t a (d2 0.938 in.2 d2 2 0 0 0.552 in.4 d2 d2 t b+2 t 2 2 4 0.33 in.3 103 psi (tensile stress) 8.591 sy Inner width A sx txy 2t The distance between point A and the center of load W b1 sx Outer width d4 2 12 Q 0.125 in. d1 2 A Q t s1 s2 tmax sx + sy + 2 sx + sy A 2 a A a a A sy sx b + t2 xy sy sx b + t2 xy 2 2 2 2 sy 2 sx 2 b + t2 xy 17 in. The distance between the point A and the center of a bike load B MAX. TENSILE STRESS s1 8591 psi ; b2 3.4 a 17 + 2 + 6 + b in. 2 MAX. COMPRESSIVE STRESS W 60 lb tmax B Wb1 Ay W Ax 0 4B 4Bb2 Ay MAz 180 lb 0 ; MAX. SHEAR STRESS 30 lb REACTIONS AT SUPPORT A MAz s2 4.74 103 lb # in. 4295 psi ; NOTE: Since the principal stresses have opposite signs, the maximum in-plane shear is larger than the maximum out-of-plane shear stress. ...
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This note was uploaded on 12/22/2011 for the course MEEG 310 taught by Professor Staff during the Fall '11 term at University of Delaware.

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