Experimental study and mathematical modelling of a new of vibro-impact moling device

Van-Du Nguyen, Ko-Choong Woo, Ekaterina Pavlovskaia

Research output: Contribution to journalArticle

39 Citations (Scopus)


In this paper experimental study and mathematical modelling of newly designed vibro-impact moling rig are presented. The design is based on electro-mechanical interactions of a conductor with an oscillating magnetic field. The rig consists of a metal bar placed within a solenoid which is connected to an RLC circuit, and an obstacle block positioned nearby. Both the solenoid and the block are attached to a base board. Externally supplied alternating voltage causes the bar to oscillate and hit the block resulting in the forward motion of the base board mimicking a mole penetration through the soil. By varying the excitation voltage and the capacitance in the circuit, a variety of system responses can be obtained.

In the paper the rig design and experimental procedure are explained in detail, and the mathematical modelling of the rig is described. Then the obtained coupled electro-mechanical equations of motion are integrated numerically, and a comparison between experimental results and numerical predictions is presented. (C) 2007 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)542-550
Number of pages9
JournalInternational Journal of Non-Linear Mechanics
Issue number6
Publication statusPublished - Jul 2008


  • vibro-impact
  • solenoid
  • impact force
  • moling
  • harmonic-balance method
  • oscillating motor
  • dynamics
  • regimes
  • drift


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