Question 4 a) A thin walled tube has the shape shown in Figure 3. The walls are 2 mm thick and d-80mm and -10mm. Find th

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Question 4 A A Thin Walled Tube Has The Shape Shown In Figure 3 The Walls Are 2 Mm Thick And D 80mm And 10mm Find Th 1 (41.33 KiB) Viewed 13 times

Question 4 a) A thin walled tube has the shape shown in Figure 3. The walls are 2 mm thick and d-80mm and -10mm. Find the shearing stress Tmax = caused by a torque of 600 N-m M 2tAm [4 marks] Figure 3. This figure refers to Question 4 a). Mr b) A thin-walled circular tube and a solid circular bar of the same material (see Figure 4) are subjected to a torque M. The tube and bar have the same cross-sectional areas A and the same lengths L. The maximum shear stress in the bar is given by Tmax. What is the ratio of the strain energy Usbe in the tube to the strain energy Uber in the solid bar if the maximum shear stresses Tmax are the same in both cases? RYA Note U = M². For the tube, use / = 2ntr³ and for the bar use /=! 201 [13 marks] O Tube Bar Figure 4. This figure refers to Question 4b). Note the two bars have the same cross sectional areas. c) Explain briefly shear flow, specifying its units. Explain how it varies along wall sections. [3 marks] (Total marks for Question 4:20)