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Symmetry 2019, 11(2), 187; https://doi.org/10.3390/sym11020187

Matching Model of Dual Mass Flywheel and Power Transmission Based on the Structural Sensitivity Analysis Method

1
Hubei Digital Manufacturing Key Laboratory, School of Mechanical and Electronic Engineering, Wuhan University of Technology, Wuhan 430070, China
2
School of Automotive and Transportation Engineering, Hefei University of Technology, Hefei 230009, China
3
Key Laboratory of Agricultural Equipment in Mid-lower Yangtze River, Ministry of Agriculture, College of Engineering, Huazhong Agricultural University, Wuhan 430070, China
*
Author to whom correspondence should be addressed.
Received: 6 December 2018 / Revised: 21 January 2019 / Accepted: 22 January 2019 / Published: 7 February 2019
(This article belongs to the Special Issue Symmetry in Mechanical Engineering)
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Abstract

As a new torsional vibration absorber, the dual mass flywheel (DMF) contains a symmetric structure in which the damping element is a pair of springs symmetrically distributed along the circumference direction. Through reasonable matching parameters, the DMF functions in isolating torsional vibrations caused by the engine from the transmission system. Our work aims to solve the accuracy of matching models between the DMF and power transmission system. The critical structural parameters of each order modal are treated consecutively by two methods: Absolute sensitivity (e.g., under the idle condition and driving condition), and relative sensitivity. The operation achieves a separation of the parameters and diagnosis of the relationship between these parameters and the natural frequency in the system. In addition, the natural frequency range is determined based upon the area of the resonance speed. As a result, the matching model is established based on the sensitivity analysis method and the natural frequency range, which means the moment of inertia distribution (its coefficient should be used as one structural parameter in relative sensitivity analysis) and the torsional stiffness in multiple stages can be observed under the combined values. The effectiveness of the matching model is verified by experiments of a real vehicle test under the idling condition and driving condition. It is concluded that the analysis study can be applied to solve the parameters matching accuracy among certain multi-degree-of-freedom dynamic models. View Full-Text
Keywords: dual mass flywheel; absolute sensitivity; relative sensitivity; torsional vibration; spring dual mass flywheel; absolute sensitivity; relative sensitivity; torsional vibration; spring
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Chen, L.; Zhang, X.; Yan, Z.; Zeng, R. Matching Model of Dual Mass Flywheel and Power Transmission Based on the Structural Sensitivity Analysis Method. Symmetry 2019, 11, 187.

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