Fixed points on the nonlinear dynamic properties of hydraulic engine mounts and parameter identification method: Experiment and theory

Fan, Rang-Lin; Li, Zhenhua

doi:10.1016/j.jsv.2007.04.045

Cited by 37 publications

(47 citation statements)

References 10 publications

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“…Small nonlinearities might already adversely affect the achievable vibration compensation [45]. However, several studies have shown that conventional, passive HEMs exhibit a highly nonlinear, amplitude-dependent behavior, due to the elastomer material, the fluid channel's dynamics and the characteristics of the decoupling membrane [37,38,[46][47][48][49][50][51][52][53]. Hence, this section analyses if it is a valid assumption to treat an AEM's secondary path as being linear.…”

Section: Nonlinearitymentioning

confidence: 99%

Experimental and analytical study of secondary path variations in active engine mounts

Hausberg

Scheiblegger

Pfeffer

et al. 2015

Journal of Sound and Vibration

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Section: Nonlinearitymentioning

confidence: 99%

Experimental and analytical study of secondary path variations in active engine mounts

Hausberg

Scheiblegger

Pfeffer

et al. 2015

Journal of Sound and Vibration

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“…The combination of formulas (21), (23), and (24) determine that, for a vibration isolator with a specific parameter, the various curves of the equivalent stiffness of the isolator with the change of excitation frequency are always through two certain points (0, 1 ) and ( , 1 + 2 ), regardless of how the external excitation amplitude changes. When → ∞, eq → 1 + 2 ; thus, parameter identification can be made using the characteristics of equivalent stiffness [23].…”

Section: Analysis Of the Equivalent Stiffness Characteristic If 0 =mentioning

confidence: 99%

Modeling and Dynamic Properties of a Four-Parameter Zener Model Vibration Isolator

Shi

Qian

Chen

et al. 2016

Shock and Vibration

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To install high-performance isolators in a limited installation space, a novel passive isolator based on the four-parameter Zener model is proposed. The proposed isolator consists of three major parts, namely, connecting structure, sealing construction, and upper and lower cavities, all of which are enclosed by four segments of metal bellows with the same diameter. The equivalent stiffness and damping model of the isolator are derived from the dynamic stiffness of the isolation system. Experiments are conducted, and the experiment error is analyzed. Test results verify the validity of the model. Theoretical analysis and numerical simulation reveal that the stiffness and damping of the isolator have multiple properties with different exciting amplitudes and structural parameters. In consideration of the design of the structural parameter, the effects of exciting amplitude, damp channel diameter, equivalent cylinder diameter of cavities, sum of the stiffness of the bellows at the end of the isolator, and length of damp channel on the dynamic properties of the isolator are discussed comprehensively. A design method based on the parameter sensitivity of the isolator’s design parameter is proposed. Thus, the novel isolator can be practically applied to engineering and provide a significant contribution in the field.

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“…G.kim and R.Singh [2][3] measured the volume stiffness of HEM liquid chamber and the damping in inertia track and established the linear and nonlinear model of HEM basing on the experiment, and simulated the work processes of inertia track and decoupler and the dynamic characteristics of HEM at low frequency. Zhenhua Lu et al [4] studied on the rule that the pre-load, the vibration amplitude and vibration frequency affect the dynamic characteristics of HDM and its rubber spring by measurement on the static and dynamic mechanical characteristics of inertia track HDM with fixed decoupler, inertia track HDM with floating decoupler and its rubber spring.…”

Section: Introductionmentioning

confidence: 99%

Lumped modeling and parameter identification of a hydraulic engine mount

Li¹,

Liu²,

Ji³

et al. 2016

Proceedings of the 2016 5th International Conference on Measurement, Instrumentation and Automation (ICMIA 2016)

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As an important part in vehicle powertrain mounting system, hydraulic engine mounts (HEM) affect the noise, vibration and harshness (NVH) in vehicle greatly. The modeling and parameter identification of the lumped parameters in model has great significance in the design and study of HEM. A lumped model of a hydraulic engine mount based on parameters of the upper and bottom chamber, the rubber spring, the inertia track and the decoupler was established in this study. Then a method to identify the lumped parameters in model was proposed. Finally the results of the dynamic characters by modeling and experiment were compared and analyzed. The analytical methods and conclusions are instructive for the design and tuning of the vibration isolation characteristics of HEMs.

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Fixed points on the nonlinear dynamic properties of hydraulic engine mounts and parameter identification method: Experiment and theory

Cited by 37 publications

References 10 publications

Experimental and analytical study of secondary path variations in active engine mounts

Experimental and analytical study of secondary path variations in active engine mounts

Modeling and Dynamic Properties of a Four-Parameter Zener Model Vibration Isolator

Lumped modeling and parameter identification of a hydraulic engine mount

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