The interest on gear noise problems is increased remarkably in the last ten years. Variable mesh stiffness, impacts and backlash affect the transmission error, main source of in desiderate noise. The control of gear geometry, as well as the influence of contact ratio and loads, plays a key role in this effort. In the present paper, a CAD-FEM methodology for spur gears is proposed. This tool provides the exact gear geometry, the relative position and the FEM mesh for a wide family of spur gears. The software generates the gear profiles from parameters describing the ‘‘user rack’’. Particular attention is paid on simulating the enveloping process in the presence of protuberance and semi-topping in the cutting tool. The shaving manufacturing process is also taken into account. A parametric approach is developed to generate the FEM mesh according to the teeth profile geometry. Finally a test case is presented to prove the accuracy of the static analysis
Automatic CAD-FEM procedure for gear analysis / Andrisano, Angelo Oreste; Bertacchi, Gabriele; Faggioni, Marcello. - ELETTRONICO. - (2007), pp. ---. (Intervento presentato al convegno IFToMM 2007 tenutosi a Besançon (F) nel June 18-21, 2007).