Targeted energy transfer in automotive powertrains
Targeted energy transfer in automotive powertrains
复制标题
汽车动力系统中的目标能量转移
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
Ben Struve
中科院分区：
文献类型：
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作者：
A. Haris;E. Motato;S. Theodossiades;A. Vakakis;L. Bergman;D. McFarland;Ben Struve
由内燃机产生的扭转振荡在传动系统中引起各种NVH现象，其中之一是变速器嘎嘎声。诸如离合器预减振器或双质量飞轮的缓和装置已被用于减轻这些NVH现象。然而，通常这些装置在有限的频率范围内是有效的，而对于宽带瞬态现象（诸如任何脉冲动作）不是如此。本文考虑了目标能量转移（泰特）的方法，以减轻扭转振动的汽车动力总成。泰特是一个概念，它试图将机械（振动）能量（以几乎不可逆的方式）从源（主系统）引导到强非线性附件（非线性能量汇-内斯），在那里它被吸收、重新分布和/或耗散。与传统的动力系统缓和方法相比，内斯应该能够在更宽的频带上操作（具有轻量化和紧凑的附加目标）。虽然泰特概念已被广泛研究的平移系统，有一个旋转（扭转）的研究缺乏。在目前的工作中，初步的参数研究进行了减少汽车动力系统模型，将一个内斯附件。改变内斯参数，包括非线性刚度、粘性线性阻尼和惯性，以确定内斯对发动机阶次（EO）振动的影响。
Torsional oscillations generated by the internal combustion engine induce various NVH phenomena in the drivetrain system, one being transmission rattle. Palliatives devices such as the clutch predampers or dual mass flywheel have been used to mitigate these NVH phenomena. However, usually these devices are effective over a limited range of frequencies, and not so for broadband transient phenomenon, such as any impulsive actions. This paper considers the Targeted Energy Transfer (TET) method to mitigate torsional vibrations in automotive powertrains. TET is a concept which attempts to direct the mechanical (vibration) energy (in a nearly irreversible manner) from a source (primary system) to a strongly nonlinear attachment (Nonlinear Energy Sink – NES), where it is absorbed, redistributed and/or dissipated. In contrast to the classical powertrain palliative methods, NES should be capable of operating over a broader band of frequencies (with the additional aim of being lightweight and compact). Although the TET concept has been extensively studied for translational systems, there is a dearth of studies for rotational (torsional) ones. In the present work, preliminary parametric studies are performed on a reduced automotive powertrain model, incorporating a NES attachment. The NES parameters, including nonlinear stiffness, viscous linear damping and inertia are varied in order to determine NES effects on engine order (EO) vibration.