Estimation of Cement Asphalt Mortar Disengagement Degree Using Vehicle Dynamic Response
Joint Authors
Zhu, Liqiang
Yu, Zujun
Shi, Hongmei
Shi, Hui
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-01-03
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
Cement asphalt mortar (CA) disengagement of a ballastless track will induce changes of dynamic response of a passing vehicle, which can accordingly be used to estimate the disengagement degree.
In this paper, a novel method called CA mortar disengagement degree estimation algorithm (CMDEA) is proposed through an analysis of wheel acceleration of a passing vehicle.
The disengagement degree estimation is transformed into an optimization problem by regarding the CA mortar disengagement degree as a parameter of a vehicle-track coupling model.
An improved genetic algorithm with a shifting window is employed for the parameter optimization, which is split into a number of phases and whose initial values are given in terms of a priori probabilities.
The accuracy and robustness of the estimation are discussed, and the results are compared with regular genetic algorithm.
The simulation results show that CMDEA can estimate CA mortar degrees with an acceptable accuracy.
Meanwhile, the proposed algorithm has the advantages of a lower error value and much shorter computation time.
Moreover, the robustness of the algorithm under different vehicle speeds, track irregularities, and signal noise levels is also verified.
American Psychological Association (APA)
Shi, Hui& Zhu, Liqiang& Shi, Hongmei& Yu, Zujun. 2019. Estimation of Cement Asphalt Mortar Disengagement Degree Using Vehicle Dynamic Response. Shock and Vibration،Vol. 2019, no. 2019, pp.1-11.
https://search.emarefa.net/detail/BIM-1211221
Modern Language Association (MLA)
Shi, Hui…[et al.]. Estimation of Cement Asphalt Mortar Disengagement Degree Using Vehicle Dynamic Response. Shock and Vibration No. 2019 (2019), pp.1-11.
https://search.emarefa.net/detail/BIM-1211221
American Medical Association (AMA)
Shi, Hui& Zhu, Liqiang& Shi, Hongmei& Yu, Zujun. Estimation of Cement Asphalt Mortar Disengagement Degree Using Vehicle Dynamic Response. Shock and Vibration. 2019. Vol. 2019, no. 2019, pp.1-11.
https://search.emarefa.net/detail/BIM-1211221
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1211221