Journal
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
Volume 70-71, Issue -, Pages 1131-1149Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ymssp.2015.09.019
Keywords
Tooth profile modification (TPM); Profile shifted gear; Geared rotor system; Time-varying mesh stiffness (TVMS); Transmission error
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Funding
- Fundamental Research Funds for the Central Universities [N130403006, N140301001]
- Joint Funds of the National Natural Science Foundation
- Civil Aviation Administration of China [U1433109]
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In this paper, a mesh stiffness model is developed for profile shifted gears with addendum modifications and tooth profile modifications (TPMs). The time-varying mesh stiffness (TVMS), load sharing factor (LSF), loaded static transmission error (LSTE) and non-loaded static transmission error (NLSTE) of a profile shifted spur gear pair with TPMs are obtained by the analytical model. The optimum profile modification curve under different amounts of TPM is determined by analyzing the LSTE first. Then, considering the effect of NLSTE, finite element (FE) model of a geared rotor system is established. The system vibration responses under different TPM curves are analyzed and the optimum modification curve is further evaluated by amplitude frequency responses. The results show that the optimum modification curve is related to the amount of TPM and modification coefficients. The comparison of the optimum profile modification curves is evaluated by LSTE and vibration responses, which shows that the optimum modification curve should be determined by evaluating the vibration response of the geared rotor system in the low mesh frequency range. (C) 2015 Elsevier Ltd. All rights reserved.
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