A 20 mm diameter steel rod passes concentrically through a bronze tube (200+SN) mm long, 50 mm external diameter and 40 mm internal diameter. The ends of the steel rod are threaded and provided with nuts and washers which are adjusted initially so that there is no end play at 25°C. 1. Assuming that there is no change in the thickness of the washers, if the stress produced in the steel is (200+SN) MN/m2 when one of the nuts is tightened, the pitch of the thread being 1 mm. Find the number of turns for the nut and stress in bronze tube.2. If the temperature of the steel and bronze is then raised to 40°C find the changes that will occur in the stresses in both materials. The coefficient of linear expansion per C is 10 x10-6 for steel and 17 x10-6 for bronze. E for steel = 210 GN/m2. E for bronze = 100 GN/m2. Where SN=3

P = 244.8 kips Max sheering stress occurs at 45 deegrees

A draw bar between a tractor and a trailer is made from a length of steel with a rectangular cross-section 100 mm by 12 mm. The load is transmitted to the bar via a pin through a 25 mm diameter hole at each end as shown in Fig. 4c. for 100 Fig. 4c If the load P in the bar is 100 kN, determine the following: The stress at the section X-X, shown in Fig. 4c. i (6 marks) ii The stress at the section Y-Y, shown in Fig. 4c. (5 marks)

The horizontal bar ABC is supported by a pin at A and two rods with identical cross-sectional areas. The rod at B is steel and rod at C is aluminum. Use P = 45 kN, E for steel = 200 Gpa and aluminum = 70 Gpa, m = 1.00 m, n = 0.50 m Steel Aluminum A m m – P. A. Determine the deformation (in mm) of the steel rod B. Determine the deformation (in mm) of the aluminum rod C. Determine the vertical movement (in mm) of force P 4 decimal places

Part 1 A compression load of P = 45 kips is applied to a 2 in. by 2 in. square post, as shown. Determine the normal stress on perpendicular to plane AB and the shear stress Tnt parallel to plane AB. Assume a = 20°. B Calculate the normal force N perpendicular to the plane AB and the shear force V parallel to plane AB. Report both answers as positive numbers. Answers: N = kips, V = kips. Save for Later Attempts: 0 of 1 used Submit Answer

A 50' length of steel rail is laid on a day when the temperature is 30 °F. In order to prevent the rail from developing any internal stresses due to a thermal increase of 50 °F, what is the amount of deformation that needs to be accommodated with respect to the slotted connection at the rail end(s)? Steel rail L=60' Slotted hole Coeff. of Mod. of Mod. of Tensile Yield Thermal Ultimate Strength Expansion a in/in./F" x 10 Elasticity Rigidity G Strength Poisson's ksi Density pcf Ratio Material ksi ksi ksi Tens. Comp. Shear Steel ASTM A36 or 490 30,000 12,000 36 58 6.5 0.25 A501 Steel (high-strength low-alky) ASTM A992 490 30,000 12,000 50 65 6.5 0.25 Steel AISI 1020 490 30,000 11,500 30 55 6.5 0.25 hot-rolled Steel AISI 1040 490 30,000 11.500 42 76 6.5 0.25 hot-rolled Stainless steel (annealed) 490 29,000 11,600 40 85 60 6.5 0.25 Cast iron (gray) 490 15,000 6000 20 80 32 5.9 0.26 Aluminum allay 6061.16 165 10,000 4000 35 38 27 13.1 0.3 51-T6 Thanium alloy 275 16,500 6500 130 140 100 5.4…

3. A circular steel cylinder of external diameter 0.2 m and internal diameter 0.1 m is shrunk onto a circular aluminium alloy cylinder of external diameter 0.1 m and internal diameter 0.05 m, where the dimensions are nominal. Determine the radial and hoop stresses at the bores and outside surfaces, such that when there is an internal pressure (retained by end caps) of 300 MPa, the maximum hoop stress in the inner cylinder is 150 MPa.

Q2/ A negligible weight bracket, subjected to 3 kips load P as shown in Fig. 1. Determine the normal stresses in the members AB and BC and the shearing stresses for the pin A and C. All pins have 0.4 in. diameter and double shear. P-3K 2/2 10,25" plate 6" Fig. 1 ... ...

) A machine having a mass of 9555 kg is supported by three solid steelrods arranged as showed in the following figure. Each rod has a diameter of 50 mm. Compute the stresses in MPa in the three rods of AB, BC, and BD.

Two ropes are used to hoist a 530 lb engine/transmission assembly as shown. The rope is anchored at C around the center part of the pin shown, causing the pin to experience a state of double shear. There is a frictionless pulley at A. The normal stress in the rope must not be allowed to exceed 15 ksi, and the shearing stress in the pin must not exceed 21 ksi. When the hoist is in the position given by: a = 44 in b = 11 ft c = 19 ft find the following: (a \& b) The forces carried in ropes AB and BC (c l& d) The necessary diameters of ropes AB and BC (e) The necessary diameter of the pin at C 2013 Michael Swanbom (a) TAB = (b) TBC = (c) dAB = (d) dBc = (e) d =