In this work, an improved non-linear lumped kineto-elastodynamic model of an external gear pump is presented which was developed from a previous work of the authors. In particular, this paper deals with the modeling and the analysis of gear meshing phenomena. The model has six degrees of freedom and takes into account the parametric excitations due to the time-varying meshing stiffness and the tooth profile errors; the effects of the backlash between meshing teeth, the lubricant squeeze and the possibility of tooth contact on both contact lines were also included in the model. Finally the model is used in order to analyse the pump dynamic behaviour and to identify the effect of design and operation parameters as well as profile errors, in terms of vibration and dynamic forces.
Modeling Meshing Phenomena in Gear Pumps
DALPIAZ, Giorgio;MUCCHI, Emiliano
2004
Abstract
In this work, an improved non-linear lumped kineto-elastodynamic model of an external gear pump is presented which was developed from a previous work of the authors. In particular, this paper deals with the modeling and the analysis of gear meshing phenomena. The model has six degrees of freedom and takes into account the parametric excitations due to the time-varying meshing stiffness and the tooth profile errors; the effects of the backlash between meshing teeth, the lubricant squeeze and the possibility of tooth contact on both contact lines were also included in the model. Finally the model is used in order to analyse the pump dynamic behaviour and to identify the effect of design and operation parameters as well as profile errors, in terms of vibration and dynamic forces.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
