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Nonlinear design analysis of centrifugal pendulum vibration absorbers: an intrinsic geometry-based framework
被引:0
作者:
Marco Cirelli
Mattia Cera
Ettore Pennestrì
Pier Paolo Valentini
机构:
[1] University of Rome Tor Vergata,Department of Enterprise Engineering
[2] University Niccolò Cusano,Department of Mechanical Engineering
来源:
Nonlinear Dynamics
|
2020年
/
102卷
关键词:
Centrifugal pendulum vibration absorber;
Nonlinear dynamics;
Intrinsic geometry;
Higher-path curvature;
Perturbation methods;
Tautochronic CPVA;
Multibody dynamics simulation;
D O I:
暂无
中图分类号:
学科分类号:
摘要:
The centrifugal pendulum vibration absorber (CPVA) is a device whose purpose is the reduction in torsional vibrations in rotating and reciprocating machinery. Over the last decades, CPVA nonlinear behavior has been thoroughly investigated. In particular, the performance and the local stability of cycloidal, epicycloidal and tautochronic CPVAs have been extensively analyzed. In this paper, on the basis of intrinsic geometry and higher-path curvature theory, a novel and unified modeling approach for the design of a parametric family of CPVAs, herein named λ\documentclass[12pt]{minimal}
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\begin{document}$$\lambda $$\end{document}-CPVA, is proposed. In the first part, the intrinsic geometry framework is applied to derive CPVA equations of motions in terms of higher-order curvature ratios of the damper path. Then, the same approach is extended to describe the curvature kinematics of the rollers of a parallel bifilar pendulum. In the second part, a new family of parametric curves in R3\documentclass[12pt]{minimal}
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\begin{document}$${\mathbb {R}}^3$$\end{document}, denoted as λ\documentclass[12pt]{minimal}
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\begin{document}$$\lambda $$\end{document}-curves, is introduced. This allows a fine adjustment of CPVA nonlinear dynamics to the design requirements. In the third part, the numerical comparison of the performance and the stability limits between the cycloidal, tautochronic pendula and λ\documentclass[12pt]{minimal}
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\begin{document}$$\lambda $$\end{document}-CPVA are presented. Finally, the λ\documentclass[12pt]{minimal}
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\begin{document}$$\lambda $$\end{document}-CPVA analytical model is more accurately simulated with a multibody dynamics approach. The design analysis framework herein proposed increases the dimension of the solution space and opens new possibilities of tailoring the CPVA performance to the specific application.
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页码:1297 / 1318
页数:21
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