Figure P4.56a shows a Houdaille damper, which is a device attached to an engine crankshaft to...
Figure P4.56a shows a Houdaille damper, which is a device attached to an engine crankshaft to reduce vibrations. The damper has an inertia ld that is free to rotate within an enclosure filled with viscous fluid. The inertia I p is the inertia of the fan-belt pulley. Modeling the crankshaft as a torsional spring kT, the damper system can be modeled as shown in part (b) of the figure. Derive the equation of motion with the angular displacements ep and ed as the outputs and the crankshaft angular displacement φ as the input. Figure P4.56 CT Viscous fluid Crankshaft kT Pulley