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49_Mechanics Homework Mechanics of Materials Solution

49_Mechanics Homework Mechanics of Materials Solution -...

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Unformatted text preview: 1.64 A % - in.- diameter steel rod AB is fitted to a round hole near end C of the wooden member CD. For the loading shown, determine (a) the maximum average normal stress in the wood, (b) the distance I) for which the average shearing stress is 91:) psi or:I the surfaces indicated by the dashed lines, (c) the average bearing stress on t e woo . PROBLEM 1.64 SOLUTION (OJ MMiMUM normal? sinus in "H16 wooJ Ana = ails—é} = 1.27: w 6" E” '-' 1922 ‘ 5'33 psi I. 1.875" 1.65 Two plates, each 3-mm thick, are used to splice a plastic strip as shown. Knowing that the ultimate shearing stress of the bonding between the surfaces is 900 kPa, determine the factor of safety with respect to shear when P = 1500 N. SOLUTION Bond area? . (See 'Fffl are) A = $1- (6°)C2°) +(ls)(é oi ‘-’ 1500 WIN)”- = [500 YJO‘ ML 2A7; ‘- (25(1500xto‘iquoxtoa) = 2700 N Manager: 1.66 Two wooden members of 3.5 x 5.5-in. uniform rectangular cross section are joined by the simple glued scarf splice shown. Knowing that the maximum allowable shearing stress in the glued splice is 75 psi, determine the largest axial load P which can be safely applied. SOLUTION A0: (353(55): “3.25 in... e ': 90°- 20° ‘-'—' 70° 5;; 5M 26 (230125 ‘75 __ _ '. 5"" “+0, — ””92 ,Pio - Li. ‘4? i610: ...
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