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

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

doi:10.1016/j.ijnonlinmec.2007.10.003

Cited by 39 publications

(21 citation statements)

References 12 publications

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“…The system is studied experimentally by Nguyen et al [17]. Studies by Barkan [18] and Rodger et al [19] revealed that vibro-impact systems produce a combination of vibration and impact and are able to achieve better soil penetration.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear dynamics of a new electro-vibro-impact system

Nguyen

Woo

2010

Nonlinear Dyn

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A variety of nonlinear dynamic responses for a new electro-vibro-impact system is presented, with indication of chaotic behavior. By mathematical modeling of the physical system, an insight is obtained to the global system dynamics. The modeling has established a good correlation with experimental data, and hence can be used as a numerical tool to optimize the system dynamics. In particular, with respect to impact forces and progression rate, may then be achieved with minimal computational cost.

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Section: Introductionmentioning

confidence: 99%

Nonlinear dynamics of a new electro-vibro-impact system

Nguyen

Woo

2010

Nonlinear Dyn

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“…The capsule model using vibro-impact device proposed by Liu et al [9] addressed these issues. A similar mobile mechanism in a large-scale platform of size which can produce strong impact force for moling machines was also reported [6]. Those models are inspired by a vibro-impact drifting oscillator studied by Pavlovskaia et al [18].…”

Section: Introductionmentioning

confidence: 76%

“…Such systems are preferable for special engineering applications in remote and hostile environments such as engineering diagnosis to disaster rescues or pipeline inspection [1][2][3] and impact moling [4][5][6]. In micro-scale biomechanics, locomotion systems can enhance capabilities of the capsule endoscopy to deal with problems of traditional systems such as inability to control and stop, and risk of capsule retention [7].…”

Section: Introductionmentioning

confidence: 99%

A new autogenous mobile system driven by vibration without impacts, excited by an impulse periodic force

Duong

Nguyen

2018

MATEC Web Conf.

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Abstract. This report describes a new proposed design for autogenous mobile systems which can move without any external mechanisms such as legs or wheels. A Duffing oscillator with a cubic spring, which is excited by an impulse periodic force, is utilized to drive the whole system. The rectilinear motion of the system is performed employing the periodically oscillation of the internal mass interacting without collisions with the main body. Utilizing the nonlinear restoring force of the cubic spring, the system can move in desired directions. When the ratio between the excitation force and the friction force is smaller than 2.5, backward or forward motion can be easily achieved by applying an excitation force in the same desired direction. Different from other vibro-impact drifting devices, no impact needed to drive the new proposed system. This novel structure allows to miniaturize the device as well as to simplify the control algorithm thus can significantly expand applicability of the proposed system.

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“…[16][17][18]. In [19], Nguyen et al studied theoretically and experimentally a vibro-impact moling rig, where both impacts and friction occur. The rig was mounted on a frictional guide rail, where the friction can be adjusted using a clamp bolt.…”

Section: Introductionmentioning

confidence: 99%

Experimental verification of the vibro-impact capsule model

2015

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In this paper an experimental verification of the vibro-impact capsule model proposed by is presented. The capsule dynamics is investigated experimentally by varying the stiffness of the support spring, and the frequency and the amplitude of excitation. The novel design of the experimental set up is discussed, and comparisons between the experiments and numerical simulations are presented showing a good agreement. The conducted bifurcation analysis indicates that the behaviour of the system is mainly periodic and that a fine tuning of the control parameters can significantly improve the performance of the system. The main findings provide a better insight for the vibro-impact systems subject to nonlinear friction, and the experimental rig can be used to predict the dynamic behaviour of these systems.

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

Cited by 39 publications

References 12 publications

Nonlinear dynamics of a new electro-vibro-impact system

Nonlinear dynamics of a new electro-vibro-impact system

A new autogenous mobile system driven by vibration without impacts, excited by an impulse periodic force

Experimental verification of the vibro-impact capsule model

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