Vehicle Gearbox Dynamics: Centre Distance Influence on Mesh Stiffness and Spur Gear Dynamics

Abstract

Abstract. Vehicle gearbox dynamics is characterized by time varying mesh stiffness. The paper presents a survey of methods used for determining mesh stiffness and the analysis of the centre distance influence on it. The refined mathematical transmission model presenting the centre distance as a variable is presented. The centre distance error as well as backlash and bearing flexibility is defined and the influence of these factors on mesh stiffness and spur gear dynamics is investigated. The results obtained from this paper may be used in gear-box diagnostics.

Research of vibrations in induction machines during transient processes using a Ferraris sensor

“…Therefore an electrical all pass module is necessary to shift the phase of the angular acceleration signal from 46.8° up to 108°. The amplitude of the signal is not modified by an all pass module [7].…”

Evaluation of the spur gear condition using extended frequency range

“…[29]. Using the presented model different gear defects can be explored, such as teeth crack, pitting problem and teeth top defect.…”

“…, , ' w wi r in this case are not constants, evaluation of these parameters are presented in [29]. The velocities of points 1 and 2 are calculated as follows:…”

“…As for the operating mode of the mechanism, bearing flexibility is growing thus causing further changes in centre distance. Thus, a mathematical model of the gear train where variations in centre distance are evaluated was presented in [29].…”

Motion characteristic between die and workpiece in spline rolling process with round dies

“…The effects of center distance variation on the meshing stiffness of a gear pair also have been researched. 11,12 Zhao et al 13 investigated the center distance modification for the machining of worm drives. Considering certain assembly errors, Wang et al 14 studied the tooth profile and meshing for double-roller enveloping hourglass worm.…”