% 11. : A locomotive semi-elliptical laminated spring has an overall length of 1.5 m and sustains a load of 85 KN at its center. The spring has 4 full length leaves and 11 graduated leaves with a central band of 102 mm width. All the leaves are to be stressed to 460 MPa, when fully loaded. The ratio of the total spring depth to that of width is 3. E = 210 KN/mm^2. Determine 1. The thickness and width of the leaves. * t=15.58 mm, b = 80.48 mm t= 20.435 mm, b = 87.98 mm t= 17.29 mm, b = 86.45 mm 2. The initial gap that should be provided between the full length and graduated leaves before the band load is applied. * C 22.302 mm C 20.625 mm C 18.093 mm