Determine the stress concentration factor in a 0.2 inch thick flat bar with two symmetric grooves (semi-circular notches) of radius 0.3 inches and width 2.6 inches. Use the graph in Fig. 2. 3.0 Nolched rectangular bar in lension or simple compression. a0 = F/A, where A = dt and is the thickness. Awld =3 2.6 15 2.2 12 K, 1.1 1.8 1.05 14 1.0 0.05 0.10 0.15 0.20 0.25 0.30 rid

Part 1 At a temperature of 60°F, a 0.05-in. gap exists between the ends of the two bars shown. Bar (1) is an aluminum alloy [E = 10,000 ksi; v = 0.32; a = 12.5 x 106/°F] bar with a width of 2.7 in. and a thickness of 0.65 in. Bar (2) is a stainless steel [E = 28,000 ksi; v = 0.12; a = 9.6 x 106/°F] bar with a width of 1.6 in. and a thickness of 0.65 in. The supports at A and C are rigid. Assume h₁=2.7 in., h₂=1.6 in., L₁=26 in., L2=40 in., and 4 = 0.05 in. Determine (a) the lowest temperature at which the two bars contact each other. (b) the normal stress in the two bars at a temperature of 225°F. (c) the normal strain in the two bars at 225°F. (d) the change in width of the aluminum bar at a temperature of 225°F. (1) L₁ h₁ Answer: Tcontact= B Save for Later A eTextbook and Media h₂ Determine the lowest temperature, Tcontact: at which the two bars contact each other. (2) L2 °F Attempts: 0 of 5 used Submit Answer

Compute the elongation, in %, of a cylindrical copper rod if it is cold worked such that the diameter is reduced from 15.9 mm to 10.4 mm

Specify the Ø1.00-inch pin perpendicular to the top surface of the plate in Fig. 6-19 within a tolerance of .015 at MMC