Frequency response of a beam-like structure to moving harmonic forces

Authors

  • Nguyen Tien Khiem Institute of Mechanics, VAST, Hanoi
  • Phi Thi Hang Electric Power University, Hanoi

DOI:

https://doi.org/10.15625/0866-7136/6235

Keywords:

Moving force, frequency response, spectral analysis, resonance, cancellation

Abstract

The spectral approach is employed for spectral analysis of a beam subjected to an arbitrary force traveling along the beam with constant speed. First, an expression for exact frequency response of a beam subjected to moving arbitrary force and general boundary conditions has been constructed. The obtained frequency domain response allows straightforwardly exhibiting response vibration components governed by different frequencies such as the natural, loading and driving ones and their interaction. This provides also alternative insight to the cancellation of response at natural frequency. The theoretical development is illustrated and validated by numerical examination on a simply supported beam under moving harmonic forces.

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Author Biographies

Nguyen Tien Khiem, Institute of Mechanics, VAST, Hanoi

professor, Senior researcher

Dept. for Technical Diagnostics, IMech, VAST

Phi Thi Hang, Electric Power University, Hanoi

Master of Science, Deputy Dean

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Published

20-12-2016

How to Cite

Khiem, N. T., & Hang, P. T. (2016). Frequency response of a beam-like structure to moving harmonic forces. Vietnam Journal of Mechanics, 38(4), 223–238. https://doi.org/10.15625/0866-7136/6235

Issue

Section

Research Paper

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