Effect of fractionally damped compliance elements on amplitude sensitive dynamic stiffness predictions of a hydraulic bushing

Fredette, Luke; Singh, Rajendra

doi:10.1016/j.ymssp.2018.04.031

Cited by 7 publications

(4 citation statements)

References 17 publications

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“…From Figure 1, it can be seen that the main components of the semi-active HDS are the cylinder block (15) and the solenoid valve (the solenoid valve base (10), the recovery spring (11), the permanent magnet (12), the coil (13), and the spool (14)). The oil of the semi-active HDS mainly flows through the hole of the damping piston (5) and generates larger damping to attenuate the impact and vibration. The nitrogen chamber (2) is filled with high-pressure nitrogen.…”

Section: Semi-active Hds Descriptionmentioning

confidence: 99%

“…The reports on the dynamic stiffness and damping characteristics of hydraulic damper are mostly based on liquid resistance mount and hydraulic bushings, 2–5 and a few studies on the dynamic stiffness of HDS and semi-active HDS. Many works about the dynamic characteristics of the HDS are focused on the force–displacement and force–velocity relations.…”

Section: Introductionmentioning

confidence: 99%

“…The 13 DOFs vehicle dynamic model mentioned in this paper containing the tire, the unsprung mass, the suspension, the vehicle body, and the powertrain mounting system, which includes 6 DOFs for the powertrain mounting system, 3 DOFs for the car body and 4 DOFs for the four unsprung mass respectively. 1 The reports on the dynamic stiffness and damping characteristics of hydraulic damper are mostly based on liquid resistance mount and hydraulic bushings, [2][3][4][5] and a few studies on the dynamic stiffness of HDS and semi-active HDS. Many works about the dynamic characteristics of the HDS are focused on the forcedisplacement and force-velocity relations.…”

Section: Introductionmentioning

confidence: 99%

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Research on the dynamic characteristic of semi-active hydraulic damping strut

Wang

Zhang

Chai

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part D:

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To reduce the vibration and shock of powertrain in the process of engine key on/off and vehicle in situ shift, a novel semi-active hydraulic damping strut is developed. The purpose of this paper is to study and discuss the dynamic stiffness model of the semi-active hydraulic damping strut. In this study, the dynamic characteristics of semi-active hydraulic damping strut were analyzed based on MTS 831 test rig first. Then, the dynamic stiffness model of semi-active hydraulic damping strut was established based on 2 degrees of freedom vibration system. In this research, a linear, fractional derivative and friction model was used to represent the nonlinear rubber bushing characteristic; the Maxwell model was used to describe the semi-active hydraulic damping strut body model; and the parameters of rubber bushing and semi-active hydraulic damping strut body were identified. The dynamic stiffness values were calculated with solenoid valve energized and not energized at amplitudes of 1 mm and 4 mm, which were consistent with experimental results in low-frequency range. Furthermore, the simplified dynamic stiffness model of the semi-active hydraulic damping strut was discussed, which showed that bushing can be ignored in low-frequency range. Then, the influence of equivalent spring stiffness, damping constant, and rubber bushing stiffness on the stiffness and damping capacity of the semi-active hydraulic damping strut were analyzed. Finally, the prototype of the semi-active hydraulic damping strut was developed and designed based on the vehicle in situ shift and engine key on/off situations, and experiments of the vehicle with and without semi-active hydraulic damping strut were carried out to verify its function.

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Section: Semi-active Hds Descriptionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Research on the dynamic characteristic of semi-active hydraulic damping strut

Wang

Zhang

Chai

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part D:

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“…Controlling the dynamic properties of hydraulic mounts or bushings can be quite challenging since these properties emerge as the result of interactions between design features, they very likely include significant nonlinearity, and because they often depend on how the device is loaded [7], [8], [9], [10]. Many studies have been undertaken to analyze the features of hydraulic mounts and bushings in detail, but these generally focus on the more advanced or nuanced features.…”

Section: Overview Of Hydraulic Anti-vibration Technologymentioning

confidence: 99%