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An Improved Statistical Damage Constitutive Model for Granite under Impact Loading
Joint Authors
Yang, Xin
Wu, Bo
Zhao, Zhenwei
Zhang, Zhenya
Li, Zhantao
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-08-14
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
To study the impact properties of granite, the parameters (including the stress-strain curve, elasticity modulus, peak strength, and peak strain) of the test pieces in each group were determined via standard split-Hopkinson pressure bar tests.
The results revealed that the prepeak stress-strain curves are approximately linear; the postpeak stress-strain curve declined sharply and exhibited the characteristics of brittle material failure after the stress exceeded the peak strength.
In terms of the specimen form following failure, for increasing strain rate, the granite specimen became increasingly fragmented after failure.
In addition, the single-parameter statistical damage constitutive model was improved, and a double-parameter statistical damage constitutive model for describing the total stress-strain curve of granite under the action of impact loading was proposed.
The parameters of the statistical damage model, m and a, were obtained via fitting.
The results revealed that the parameter m decreases with increasing elasticity modulus, whereas the parameter a increases.
Similarly, the peak strength and the peak strain increased (in general) with increasing strain rate.
American Psychological Association (APA)
Zhao, Zhenwei& Wu, Bo& Yang, Xin& Zhang, Zhenya& Li, Zhantao. 2019. An Improved Statistical Damage Constitutive Model for Granite under Impact Loading. Advances in Civil Engineering،Vol. 2019, no. 2019, pp.1-7.
https://search.emarefa.net/detail/BIM-1117144
Modern Language Association (MLA)
Zhao, Zhenwei…[et al.]. An Improved Statistical Damage Constitutive Model for Granite under Impact Loading. Advances in Civil Engineering No. 2019 (2019), pp.1-7.
https://search.emarefa.net/detail/BIM-1117144
American Medical Association (AMA)
Zhao, Zhenwei& Wu, Bo& Yang, Xin& Zhang, Zhenya& Li, Zhantao. An Improved Statistical Damage Constitutive Model for Granite under Impact Loading. Advances in Civil Engineering. 2019. Vol. 2019, no. 2019, pp.1-7.
https://search.emarefa.net/detail/BIM-1117144
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1117144