dorsal/arxiv
View SchemaDispersion of critical rotational speeds of gearbox: effect of bearings stiffnesses
| Authors | François Mayeux, Emmanuel Rigaud, Joël Perret-Liaudet |
|---|---|
| Categories | |
| ArXiv ID | physics/0701048 |
| URL | https://arxiv.org/abs/physics/0701048 |
| Journal | ISMA International Conference on Noise and Vibration Engineering, Belgique (2002) |
Abstract
Noise measurement on a population of a gearbox manufactured in large number reveals a high variability principally due to tolerances on each design parameter of the gear. Gearbox noise results mainly from vibration of its housing excited by the transmission error. High dynamic mesh load, high vibratory response of housing and high acoustic level of the gearbox can be observed for some critical rotational speeds. These ones correspond to excitation in a resonant manner of some particular modes which store a high potential energy at the meshing stiffness. Variability of the associated critical modes depend on tolerances affected to gear design parameters. It also depends on bearings stiffnesses dispersion. The physical origins of the bearings stiffnesses variability are preloads. Bearings stiffnesses and tolerances affect the characteristics of the meshing stiffness and the dynamic transfer from dynamic meshing force to the housing vibratory response. The purpose of this paper is to study effect of the bearings stiffnesses variability by estimating the first two moments of statistical distribution of critical modes.
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"abstract": "Noise measurement on a population of a gearbox manufactured in large number\nreveals a high variability principally due to tolerances on each design\nparameter of the gear. Gearbox noise results mainly from vibration of its\nhousing excited by the transmission error. High dynamic mesh load, high\nvibratory response of housing and high acoustic level of the gearbox can be\nobserved for some critical rotational speeds. These ones correspond to\nexcitation in a resonant manner of some particular modes which store a high\npotential energy at the meshing stiffness. Variability of the associated\ncritical modes depend on tolerances affected to gear design parameters. It also\ndepends on bearings stiffnesses dispersion. The physical origins of the\nbearings stiffnesses variability are preloads. Bearings stiffnesses and\ntolerances affect the characteristics of the meshing stiffness and the dynamic\ntransfer from dynamic meshing force to the housing vibratory response. The\npurpose of this paper is to study effect of the bearings stiffnesses\nvariability by estimating the first two moments of statistical distribution of\ncritical modes.",
"arxiv_id": "physics/0701048",
"authors": [
"Fran\u00e7ois Mayeux",
"Emmanuel Rigaud",
"Jo\u00ebl Perret-Liaudet"
],
"categories": [
"physics.class-ph"
],
"journal_ref": "ISMA International Conference on Noise and Vibration Engineering,\n Belgique (2002)",
"title": "Dispersion of critical rotational speeds of gearbox: effect of bearings stiffnesses",
"url": "https://arxiv.org/abs/physics/0701048"
},
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