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134_Mechanics Homework Mechanics of Materials Solution

# 134_Mechanics Homework Mechanics of Materials Solution -...

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Unformatted text preview: ‘CjL—J a E Q PROBLEM 2.95 2.95 Knowing that, for the plate shown, the allowablestress is 125 MPa, determine the maximum allowable value of P when (a) r = 12 mm, (b) r = 18 mm. SOLUTION A = (60105) = #00 m‘ : qooxuo“ m‘" .32..- 133:2 = at ' eon» 20° Y‘ In“ (a, W T -= 0-2 Fwam Fiﬁ. 2.CH 5 K : Iii? P = A 61“,: = (300 xgo‘imgsvzoﬁ) _ K [.12 '3' 0'30} From Fig 2.64 L .— «ML—mm) p_.’5_6_'__- ‘25 K PROBLEM 2.96 3 L. 1.75 - 67.3110 N 2.96 Knowing that P = 38 kN, determine the maximum stress when (a) r = 10 mm, (b) r= l6mm,(c)r= 18 mm. SOLUTION — V. A t (60305) -: 900 m," = qoo no“ in p- \QOIMM 5 60mm : 2'00 can ralom £1: 7%?" = 0.1547 From, Fig Q.CQ in I<= 2.05 SW = G _ (2.663(62xl0’) W" W KP T = 87,0):106 Pa. = 37.0 MPa. an (‘93 T=ié mm ‘— _ (waxeswd) ___. s = 6913’ W 75.2)!!0 Pa. 75.2 MPa. 4‘ (CA P=13um me F13 2.04 b = (ms WC sarto‘) ___ €100,104, 73.?w10‘ Pa = 73.? MP4 ‘3 53w. ...
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