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首页> 外文期刊>Mechanical systems and signal processing >Development of a scientific torsional system experiment containing controlled single or dual-clearance non-linearities: Examination of step-responses
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Development of a scientific torsional system experiment containing controlled single or dual-clearance non-linearities: Examination of step-responses

机译：包含受控的单间隙或双间隙非线性的科学扭转系统实验的开发：阶跃响应的检验

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摘要

The chief goal of this paper is to propose a new laboratory experiment that exhibits the step-response of a torsional system containing one or two controlled clearances. This work is motivated by the disadvantages of prior large-scale experiments which utilize production vehicle drivelines and their components with significant real-life complexities. The conceptual and physical design features, which include sizing, modal properties, excitation, and instrumentation, are discussed with the goal of creating a controlled experiment Like prior literature, a step-down torque excitation is selected and all analyses are performed on the acceleration signals to observe vibro-impact in the time domain. Typical measurements (for both the single and dual-clearance configurations) exhibit rich non-linear behavior, including the double-sided impact regime and a time-varying oscillatory period. Additionally, new measurements are compared to predictions from simple reduced order non-linear models to verify the feasibility of the proposed experiment. Finally, the utility of this experiment is demonstrated by comparing its measurements to a prior large-scale experiment that accommodates a production vehicle clutch damper with multiple stages. The hardening and softening effects in both experiments are discussed in the context of double and single-sided impacts as well as the oscillatory periods that vary with time.
机译：本文的主要目的是提出一种新的实验室实验，该实验展示了包含一个或两个受控间隙的扭转系统的阶跃响应。这项工作是由先前的大规模实验的弊端所推动的，这些实验利用生产车辆的传动系统及其零部件，具有明显的现实生活中的复杂性。讨论了概念和物理设计特征，包括尺寸，模态特性，励磁和仪表，目的是创建受控实验，就像先前的文献一样，选择了逐步降低的转矩励磁，并对加速度信号进行所有分析观察时域中的振动影响。典型的测量结果（对于单间隙和双间隙配置）都表现出丰富的非线性行为，包括双面冲击范围和随时间变化的振荡周期。此外，将新的测量结果与简单的降阶非线性模型的预测结果进行比较，以验证所提出实验的可行性。最后，通过将其测量结果与先前的大规模实验进行比较，证明了该实验的实用性，该大规模实验容纳了具有多个阶段的生产车辆离合器减震器。在双面和单面冲击以及随时间变化的振荡周期的背景下讨论了这两个实验中的硬化和软化效果。

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