Computational model of conventional engine mounts for commercial vehicles: validation and application

Yarmohamadi, Hoda; Berbyuk, Viktor

doi:10.1080/00423111003770439

Cited by 9 publications

(2 citation statements)

References 20 publications

(34 reference statements)

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“…However, in the powertrain mounting system, the shape of rubber mounts is mostly irregular. 12,13 For double isolation rubber mounts with irregular shapes, the finite element method is mostly used to analyze the high-frequency dynamic characteristics. Hazra and Janardhan Reddy 14 calculated the high-frequency (50–2k Hz) dynamic stiffness of the double isolation rubber mount, and compared it with the dynamic stiffness of the conventional rubber mount.…”

Section: Introductionmentioning

confidence: 99%

Modeling and analysis of high-frequency dynamic characteristics of double isolation rubber mounts

Liu

Sun

Shi

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part D:

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Rubber mounts are the vital component to reduce the vibration translated from the powertrain to the vehicle body. The dynamic stiffness of the conventional rubber mount increase with the increase of the excitation frequency, and form a peak under high-frequency excitation in the battery electric vehicle (BEV). So the double isolation rubber mount has gradually been used in the BEV powertrain to improve the vibration isolation performance in the high-frequency range. Compared with conventional rubber mounts, the double isolation rubber mount has smaller dynamic stiffness in the high-frequency range. However, the traditional simulation model of the dynamic characteristics cannot consider the influence of the metal bracket of the double isolation rubber mount on the dynamic characteristics. Therefore, it is necessary to carry out the modeling and analysis of the dynamic characteristics simulation model of the double isolation rubber mount. In this paper, a general dynamic model of double isolation rubber mounts is proposed to describe the high-frequency dynamic characteristics. In this general dynamic model, the complex stiffness element representing the viscoelasticity of rubber is expressed using the fractional derivative model and the Maxwell model, respectively, and two high-frequency dynamic models are established. Two model parameter identification methods are proposed for high-frequency dynamic models of double isolation rubber mounts, and the identification results are compared and analyzed. Then, two high-frequency dynamic models are used to simulate the high-frequency dynamic characteristics of double isolation rubber mounts. The simulation results show that both high-frequency dynamic models can calculate the high-frequency dynamic characteristics of double isolation rubber mounts. Among them, the dynamic model based on fractional derivative elements has relatively high accuracy, and the dynamic model based on Maxwell elements has relatively high stability. The high-frequency dynamic characteristic modeling method of double isolation rubber mounts presented in this paper is helpful to the vibration and noise analysis of electric vehicle powertrain systems under high-frequency excitation.

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Section: Introductionmentioning

confidence: 99%

Modeling and analysis of high-frequency dynamic characteristics of double isolation rubber mounts

Liu

Sun

Shi

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part D:

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“…Several numerical and experimental prediction methods for engine mounts have been developed over the past decade [1][2][3][4]. Most of these studies pointed out that nonlinear stiffness should ideally be predictable, in order to design the dynamic characteristics.…”

Section: !Introductionmentioning

confidence: 99%

Ageing of a polymeric engine mount investigated using digital image correlation

et al. 2018

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Multibody modeling and vibration dynamics analysis of washing machines

Nygårds

Berbyuk

2011

Multibody Syst Dyn

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In this paper a computational model of a horizontal axis washing machine is presented. The model has been built using a theoretical-experimental methodology consisting of integration of multibody system (MBS) formalism, detailed modeling of machine functional components and experimental data based validation. The complete model of a washing machine is implemented in the commercial MBS environment Adams/View from MSC.Software.An undesirable impact of washing machine operation on the surroundings is vibration and noise. The impact comes from system dynamics and poorly distributed load inside the drum, creating an imbalance. To get insight into vibration dynamics extensive simulations have been performed for washing machines in service as well as for machines in the developing stage by using the created computational model. This paper presents several results of numerical studies of the vibration dynamics of washing machines including the study of sensitivity of system dynamics with respect to suspension structural parameters, and the results of investigation of the potential of the automatic counterbalancing technology for vibration output reduction. In particular, simulations of the considered two plane balancing device has shown an existing significant potential in eliminating unbalanced load at supercritical spinning speed, resulting in a substantial vibration reduction in washing machines.Commemorative Contribution.

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Computational model of conventional engine mounts for commercial vehicles: validation and application

Cited by 9 publications

References 20 publications

Modeling and analysis of high-frequency dynamic characteristics of double isolation rubber mounts

Modeling and analysis of high-frequency dynamic characteristics of double isolation rubber mounts

Ageing of a polymeric engine mount investigated using digital image correlation

Multibody modeling and vibration dynamics analysis of washing machines

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