Situation 1: A rigid bar ABC weighs 10 kN/m. The compressive stress of the copper bar is 20 MPa. 3 m B 2 m Copper L = 3m A = 1500 mm² Brass L = 2 m A = 1200 mm² A. What is the stre= it will experien (C) (MPa) B. What is the mini pin at A assum in double she shearing stress your answer in
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- 2. The bronze bar 3 m long with a cross-sectional area of 350mm2 is placed between two rigid walls. At a temperature of -20 oC, there is a gap of 2.2 mm. Find the temperature atwhich the compressive stress in the bar will be 30 MPa ifthe bar will experience:a. No tensile.b. With an tensile of 5,000 N.Use α = 18.0 x 10-6 /oC and E = 80 GPa.QUESTION 3 The assembly consists of three steel rods and a horizontal bar BED. The structure supports a 36 kN load P located at middle of bar BED. Each of the rod AB and CD has a cross-sectional area of 200 mm² and rod EF has a 625 mm². Modulus of elasticity for steel is 200 GPa. Determine: (a) The change in length of rod EF. (b) The stress in each rod. 500 mm 400 mm2. Axial loads are applied to the compound rod that is composed of an aluminum segment rigidly connected between steel and bronze segments. What is the stress in each material given that P = 10 kN? Specify whether tension or compression. Bronze Aluminum Steel A =400 mm2 A= 600 mm2 A = 300 mm2 2P ЗР 4P P -3 m 5 m 4 m Stress in Bronze (MPa) %D Stress in Aluminum (MPa) %3D Stress in Steel (MPa)
- 3. The rigid bar weighs 5 kN/m, is supported as shown. The assembly is initially stress-free. Find the stress in each rod if the temperature rises 20°C after a load W = 150 kN is applied. A (mm?) a (FC) E (GPa) Steel rod 300 11.7 x 10-6 200 Bronze rod 1400 18.9 x 10-6 83 Bronze | 3 m Steel 1.5 m ►| 1.0 m 2.5 m 2 m WDetermine the normal stress (in Mpa) in member AC of the truss shown if it is made up of a 22-mm-square bar of alloy and the load P is 20.15 kN. Express your answer in two decimal places.Determine the normal stress (in Mpa) in member AB of the truss shown if it is made up of a 14-mm-square bar of alloy and the load P is 21.53 kN. Express your answer in two decimal places.
- Part 2 * Your answer is incorrect. The z-component of momemt M will cause compression at A and B, and tension at C and D. The y-component of moment M will cause compression at A and D, and tension at B and C. The maximum tensile bending stress will occur at point C. Calculate the magnitude of the largest bending moment that can be applied so that the stress at corner C does not exceed 205 MPa. Answer: M- eTextbook and Media Save for Later Part 3 8.31E1 Answer: M-i The z-component of moment M will cause compression at A and B, and tension at C and D. The y-component of moment M will cause compression at A and D, and tension at B and C. The maximum compressive bending stress will occur at point A. Calculate the magnitude of the largest bending moment that can be applied so that the stress at corner A does not exceed 205 MPa. eTextbook and Media Save for Later Part 4 kN-m * Your answer is incorrect. kN-m Submit Answer Determine the maximum bending moment that can be applied to this cross…Question 4. Three wires are used to suspend the plate shown. Aluminium wires are used at A and B with a diameter of 3 mm and a steel wire is used at C with a diameter of 2 mm. Knowing that the allowable stress for aluminium (E = 72 GPa) is 96 MPa and that the allowable stress for steel (E = 200 GPa) is 124 MPa, determine the maximum load P that may be applied. L L P BThe light rigid bar ABCD shown below is pinned at B and connected to two vertical rods. Assuming that the bar was initially horizontal and the rods stress-free, determine the stress in each rod after the load P = 20 kN is applied. steel L=1.5 m A=300 mm2 2 m- E= 200 GPa B D Aluminun L=2 m P = 20 kN - 1m A= 500 mm2 E= 70 GPa
- Two plate are joint by five rivets of 20 mm diameter. What is the shear stress in the material if the shear forces is 18840 N O 12 N/mm2 O 20 N/mm2 O 15 N/mm2The 10-mm-diameter steel bolt in (Figure 1) is surrounded by a bronze sleeve. The outer diameter of this sleeve is 20 mm, and its inner diameter is 10 mm. Est = 200 GPa, Ebr 100 GPa. Figure P P -10 mm -20 mm 1 of 1 Part A If the bolt is subjected to a compressive force of P = 21.9 kN, determine the magnitude of the average normal stress in the steel. Express your answer to three significant figures and include appropriate units. Ost = Submit Part B Obr = Submit 0 Value If the bolt is subjected to a compressive force of P = 21.9 kN, determine the magnitude of the average normal stress in the bronze. Express your answer to three significant figures and include appropriate units. Provide Feedback A Request Answer Value Units Request Answer Units ?Portions of a x-in. square bar have been bent to form the two machine components shown. Knowing that the allowable stress is 18 ksi, determine the maximum load that can be applied to each component. (a) 1 in. (b) The maximum load that can be applied to component (a) is The maximum load that can be applied to component (b) is lb. lb.