Question

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A new design of an automotive disk clutch (as shown in Figure 18.2) is to be fitted with nine springs, each compressed at 5mm to provide a clamping force of 1.8 kN. The clutch is to have two driving surfaces and two driven surfaces. The moulded friction material provides a conservatively estimated coefficient of friction 0.39 when in contact with the flywheel and the pressure plate. The outer ring radius is set to 276 mm when the engine produces a maximum torque of 208279 Nmm. Determine resulting factor of safety with respect to slippage of a brand new clutch assuming ideal usage of the surface area. Answer to 2 decimals. Your answer must be accurate within 5%.

Answer 1

= 1.8kN 0.39 e IG5 mm - 2 2763- G5 225.15mm Paiss - 2082+0 /2 2 2 子112.69. 2G5ろ = 王11262-265弖 043.S .. . Factor. FOS - 6.83