Abstract
This paper introduces a dynamic method for the stiffness identification of an impacted object via analysis of its corresponding impact duration. To accurately detect the impact durations from experimental signals, nonlinear time series methods are applied. Two low-dimensional dynamical systems, including a piecewise-linear impact oscillator and a rock impacting system, are studied experimentally and numerically to demonstrate the proposed method. Meanwhile, the analytical prediction of the impact duration for the period-one one-impact motion is developed. The results of both systems indicate that, for a certain stiffness, the impact duration of the period-one one-impact motion is nearly constant. The higher the stiffness, the lower the impact duration. This monotone correlation provides a mechanism to estimate the stiffness of the impacted object once the impact duration has been accurately detected. The developed method can be used to optimise percussive drilling parameters.
| Original language | English |
|---|---|
| Pages (from-to) | 224-244 |
| Number of pages | 21 |
| Journal | Mechanical Systems and Signal Processing |
| Volume | 80 |
| Early online date | 12 May 2016 |
| DOIs | |
| Publication status | Published - Dec 2016 |
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Keywords
- Impact oscillator
- Nonlinear time series analysis
- Rock impacting system
- Stiffness identification
- Tangent vector analysis
ASJC Scopus subject areas
- Mechanical Engineering
- Civil and Structural Engineering
- Aerospace Engineering
- Control and Systems Engineering
- Computer Science Applications
- Signal Processing
Cite this
Dynamic method of stiffness identification in impacting systems for percussive drilling applications. / Liao, Maolin; Ing, James; Sayah, Mukthar; Wiercigroch, Marian.
In: Mechanical Systems and Signal Processing, Vol. 80, 12.2016, p. 224-244.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Dynamic method of stiffness identification in impacting systems for percussive drilling applications
AU - Liao, Maolin
AU - Ing, James
AU - Sayah, Mukthar
AU - Wiercigroch, Marian
PY - 2016/12
Y1 - 2016/12
N2 - This paper introduces a dynamic method for the stiffness identification of an impacted object via analysis of its corresponding impact duration. To accurately detect the impact durations from experimental signals, nonlinear time series methods are applied. Two low-dimensional dynamical systems, including a piecewise-linear impact oscillator and a rock impacting system, are studied experimentally and numerically to demonstrate the proposed method. Meanwhile, the analytical prediction of the impact duration for the period-one one-impact motion is developed. The results of both systems indicate that, for a certain stiffness, the impact duration of the period-one one-impact motion is nearly constant. The higher the stiffness, the lower the impact duration. This monotone correlation provides a mechanism to estimate the stiffness of the impacted object once the impact duration has been accurately detected. The developed method can be used to optimise percussive drilling parameters.
AB - This paper introduces a dynamic method for the stiffness identification of an impacted object via analysis of its corresponding impact duration. To accurately detect the impact durations from experimental signals, nonlinear time series methods are applied. Two low-dimensional dynamical systems, including a piecewise-linear impact oscillator and a rock impacting system, are studied experimentally and numerically to demonstrate the proposed method. Meanwhile, the analytical prediction of the impact duration for the period-one one-impact motion is developed. The results of both systems indicate that, for a certain stiffness, the impact duration of the period-one one-impact motion is nearly constant. The higher the stiffness, the lower the impact duration. This monotone correlation provides a mechanism to estimate the stiffness of the impacted object once the impact duration has been accurately detected. The developed method can be used to optimise percussive drilling parameters.
KW - Impact oscillator
KW - Nonlinear time series analysis
KW - Rock impacting system
KW - Stiffness identification
KW - Tangent vector analysis
UR - http://www.scopus.com/inward/record.url?scp=84966570548&partnerID=8YFLogxK
U2 - 10.1016/j.ymssp.2016.04.021
DO - 10.1016/j.ymssp.2016.04.021
M3 - Article
VL - 80
SP - 224
EP - 244
JO - Mechanical Systems and Signal Processing
JF - Mechanical Systems and Signal Processing
SN - 0888-3270
ER -