Effect of End Friction on the Dynamic Compressive Mechanical Behavior of Concrete under Medium and Low Strain Rates
Joint Authors
Jin, Liu
Xu, Chengshun
Han, Yaqiang
Du, Xiuli
Source
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-20, 20 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-01-06
Country of Publication
Egypt
No. of Pages
20
Main Subjects
Abstract EN
The objective of the study is to examine the quantitative influence of end friction on the dynamic mechanical behavior of concrete under medium and low strain rates.
Considering the concrete heterogeneity, a mesoscale mechanical model was established to study the confinement effect of end friction, in which the concrete was assumed to be composed of aggregates, mortar matrix, and the interfacial transition zones between them.
The friction behavior was utilized to describe the interaction between the concrete specimens and loading apparatus.
The dynamic axial compressive mechanical behavior of concrete subjected to different medium and low strain rates and friction coefficients was simulated.
Furthermore, the confinement mechanism of end friction on the compressive dynamic increase factor (DIF) of concrete was studied.
The simulation results indicate that with the increase of end friction coefficient, the uniaxial compressive strength of concrete first increases and then becomes stable; the end friction confinement changes the local stress state and damage distribution of concrete, and it thus contributes to the increase in compressive strength of concrete; the friction contribution factor presents a descending tendency with increasing the strain rate and decreases obviously when the end friction coefficient increases.
American Psychological Association (APA)
Jin, Liu& Xu, Chengshun& Han, Yaqiang& Du, Xiuli. 2016. Effect of End Friction on the Dynamic Compressive Mechanical Behavior of Concrete under Medium and Low Strain Rates. Shock and Vibration،Vol. 2016, no. 2016, pp.1-20.
https://search.emarefa.net/detail/BIM-1119499
Modern Language Association (MLA)
Jin, Liu…[et al.]. Effect of End Friction on the Dynamic Compressive Mechanical Behavior of Concrete under Medium and Low Strain Rates. Shock and Vibration No. 2016 (2016), pp.1-20.
https://search.emarefa.net/detail/BIM-1119499
American Medical Association (AMA)
Jin, Liu& Xu, Chengshun& Han, Yaqiang& Du, Xiuli. Effect of End Friction on the Dynamic Compressive Mechanical Behavior of Concrete under Medium and Low Strain Rates. Shock and Vibration. 2016. Vol. 2016, no. 2016, pp.1-20.
https://search.emarefa.net/detail/BIM-1119499
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1119499