GI Info QUESTION 3 (a) [20 marks] A cylindrical brass bar of 56.25 mm diameter and of length 900 mm is subjected to an axial tensile load of 170.1 kN. The extension of the bar is measured as 0.853 mm, and the (b) o search 0 contraction in diameter as 0.0115 mm. Determine: (i) the values of Poisson's Ratio and Young's Modulus for the material; (ii) the change in cross-sectional area of the bar. (4) (4) The component with rectangular cross-section shown in Figure Q1(b) is of dimensions length L = 300 mm, breadth B = 50 mm and depth D = 80 mm. It is simultaneously subjected to the following mutually perpendicular loads: 240 kN tensile along the x-axis. 425 kN compressive along the y-axis. 375 kN tensile along the z-axis. If E = 140 GN/m and v = 0.32 for the material, determine the following: (i) the stress in each direction; (ii) the change in mm for each dimension, L, B, and D. (6) (6) 14C Mostly cloudy ^ link Anatomy & Design 2 Sa....pdf bine itcarlow_ie%2FDocuments%2FDocum... Info I K search y-axis z-axis D x-axis Table 1: Q3(a) and (b) Formule Figure Q3(b) AV = E(1-2v)V1 AA = -2vEA V2 = V(1-2ve + ) A2 = A(12vE) 1 x = = = [x V(y + )] Ey == [y - v(x +0)] v(y + x)] B 14C Mostly cloudy