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Vibro-acoustic analysis of free piston engine structure using finite element and boundary element methods

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Abstract

This paper presents the results of vibro-acoustic modeling and simulation using the finite element and the boundary element methods for the free piston engine structure. A model of the engine was constructed through the use of finite element software to perform a normal mode analysis of the engine structure. The objective was to determine the mode shapes and the natural frequency that contribute to engine structure vibration. Theoretical development of the engine balance motion and frequency response was also conducted. From the simulation and finite element analysis, the force response pattern of the engine vibration was determined and then compared with its natural frequency. The vibration data were used as the input data for noise analysis using the boundary element method. The integration of the finite element and the boundary element determined the noise-frequency data of the engine structure toward the occurrence of engine noise. The information can be used by designers to analyze engine specifications and structure, especially at the preliminary design stage.

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Authors and Affiliations

  1. Department of Mechanical and Manufacturing Engineering, Faculty of Engineering, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia

    A. A. Nuraini

  2. Department of Mechanical and Materials Engineering, Faculty of Engineering and the Built Environment, National University of Malaysia, 43600, UKM Bangi, Selangor, Malaysia

    A. K. A. Mohd Ihsan, M. J. M. Nor & N. Jamaluddin

Authors
  1. A. A. Nuraini
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  2. A. K. A. Mohd Ihsan
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  3. M. J. M. Nor
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  4. N. Jamaluddin
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Correspondence to A. A. Nuraini.

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Recommended by Associate Editor Seockhyun Kim

A. A. Nuraini was born in 1972 in Kuala Lumpur, Malaysia. Her research work began in 2000 while she was pursuing her master’s degree in mechanical engineering. Her fields of interest are engine design and vehicle engineering. She is also interested in thermodynamics, vibration, energy, and other topics related to applied mechanics. She is currently a senior lecturer in mechanical engineering at the Universiti Putra Malaysia. She is a member of the Society of Automotive Engineers (international) and is a graduate member of the Institute of Engineers, Malaysia.

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Nuraini, A.A., Mohd Ihsan, A.K.A., Nor, M.J.M. et al. Vibro-acoustic analysis of free piston engine structure using finite element and boundary element methods. J Mech Sci Technol 26, 2405–2411 (2012). https://doi.org/10.1007/s12206-012-0620-3

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  • DOI: https://doi.org/10.1007/s12206-012-0620-3

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