Mount Model Dependent on Amplitude and Frequency for Automotive Powertrain Mounting System

Paper #:
  • 2017-01-0405

Published:
  • 2017-03-28
DOI:
  • 10.4271/2017-01-0405
Citation:
Lv, T., Feng, X., Xu, P., and Zhang, Y., "Mount Model Dependent on Amplitude and Frequency for Automotive Powertrain Mounting System," SAE Technical Paper 2017-01-0405, 2017, doi:10.4271/2017-01-0405.
Pages:
7
Abstract:
Three constitutive models which capture the amplitude and frequency dependency of filled elastomers are implemented for the conventional engine mounts of automotive powertrain mounting system (PMS). Firstly, a multibody dynamic model of a light duty truck is proposed, which includes 6 degrees of freedom (DOFs) for the PMS. Secondly, Three constitutive models for filled elastomers are implemented for the engine mounts of the PMS, including: (1) Model 1: Kelvin-Voigt model; (2) Model 2: Fractional derivative Kelvin-Voigt model combined with Berg’s friction; (3) Model 3: Generalized elastic viscoelastic elastoplastic model. The nonlinear behaviors of dynamic stiffness and damping of the mounts are investigated. Thirdly, simulations of engine vibration dynamics are presented and compared with these models and the differences between common Kelvin-Voigt model and other constitutive models are observed and analyzed.
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