A solid aluminum [E = 70 GPa; a = 22.5 x 10-6/°C] rod (1) is connected to a solid bronze [E = 100 GPa; a = 16.9 x 10-6/°C] rod (2)vat flange B as shown. Aluminum rod (1) has an outside diameter of 42 mm, and bronze rod (2) has an outside diameter of 128 mm. The bars are unstressed when the structure is assembled at 30°C. After the 300-kN load is applied to flange B, the temperature increases to 45°C. Determine the normal force in rod (1). A) 44.3 KN (C) (B) 30.5 KN (C) 32.5 KN (C) 41.4 KN (C) A (1) 2.6 m 150 kN 150 kN B Im

6:53 PM M ..39 and 300 mm long solid copper bar of 20 mm diameter (See Figure 1). The composite bar is heated 35°C above room temperature, clamped at both ends and then allowed to cool to room temperature. If the distance between the clamps is unchanged find the stress in each bar. For steel, use a = 12.5 x 100% E = 200 GPa and for Aluminum use a = 17 x × 10**; E = 130 GPa 500 m Figure Q1 Question 2 A narrow steel strip, 15 mm thick, is clad by two magnesium plates, one is 2.5 mm thick and the other is 3.5 mm thick as show in Figure 2. Calculate the change in stress in each strip for a centigrade degree rise in temperature of the compound strip. Assume perfect bonding of the strips along their length. For steel, a = 12 x 10°/°C; E = 200 GN/m². For magnesium, a = 27 x 10°/°C; E = 45 GN/m² 3.5mm 15 mm 2.5 mm Figure Q2 Question 3 A horizontal beam AD, 10 m long, carries a uniformly distributed load of 25kN/m, together with a concentrated load of 36 kN at the left-hand end A (see Figure…

H.W 3 Two aluminum alloy plates (2) are attached to the sides of a wooden beam (1) as shown in Figure 3. mensions of the composite cross section are b1 = 80 mm, d¡ = 240 mm, b2 = 10 mm, d2 = b2 The di- |di 120 mm, and a = 60 mm. Deter- (2) (2) %3D mine the maximum bending (1) a stresses produced in both the wooden beam and the aluminum b1 plates if a bending moment FIGURE 3 +6,000 N m is applied M2 %3D about the z axis. Assume that Ej = 12.5 GPa and E2 = 70 GPa.

A fillet-welded Joint of 6mm size is shown in the figure. The welded surfaces meet at 60-90 degree and permissible stress in the fillet weld is 108MPa. The safe load that can be transmitted by the joint is 100mm 50mm

The solid rod has a diameter of 20mm. Find the following: Angle of twist at C with respect to A (in radians) Angle of twist at B with respect to A (in radians) Maximum shear stress at A (in MPa) (Shear stress at support, at a point 7mm from center. (in MPa) A-36 steel with the following properties: Modulus of Elasticity, E = 29x10^3 ksi or 200 GPa Shear Modulus/Modulus of Rigidity, G = 11.5x10^3 ksi or 79.3 GPa Poisson's Ratio, nu = 0.260 Temperature Coefficient for thermal expansion, a = 6.6x10^-6/°F or 11.7x10^-6/°C

(b) (ii) A 20 mm diameter rod made from 0.4% C steel is used to produce a steering rack. If the yield stress of the steel used is 350 MPa and a factor of safety of 2.5 is applied, what is the maximum working load that the rod can be subjected to? 2

The assembly consists of two A992 steel bolts AB and EF and an 6061-T6 aluminum rod CD. When the temperature is 30°C, the gap between the rod and rigid member AE is 0.1 mm. Assume BF is also rigid. (Figure 1) Figure 400 mm A B 25 mm 50 mm D 0.1 mm 300 mm E 1 of 1 25 mm Part A Determine the normal stress developed in the bolts if the temperature rises to 180°C. Express your answer to three significant figures and include the appropriate units. Enter negative value in the case of compression and positive value in the case of tension. of = Submit Part B σ₁ = Submit O HA Value Request Answer Provide Feedback ■μÅ Value Determine the normal stress developed in the rod if the temperature rises to 180°C. Express your answer to three significant figures and include the appropriate units. Enter negative value in the case of compression and positive value in the case of tension. Units Request Answer wwwww Units ? wwwww Review ? Next >

2- The Tensile stress of AISI 1035 Cold-drawn steel is; (a) 550 MPa. (b) 500 MPa. (c) 450 MPa.