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Elastic-Plastic Behavior of Compacted Loess under Direct and Cyclic Tension

Elastic-Plastic Behavior of Compacted Loess under Direct and Cyclic Tension

Authors :
Shixin He
Haibo Bai
Source :
Advances in Materials Science and Engineering, Vol 2019 (2019)
Publication Year :
2019
Publisher :
Hindawi Limited, 2019.

Abstract

Tensile strain is one of the main variables that affect fracturing in soil. This paper focuses on an experimental investigation of the deformation characteristics of remolded loess in direct and cyclic tension tests. The material behavior was approximated as elastic-plastic by ignoring the effect of time. In direct tests, the results showed that the change in slope of the stress-strain curve depended on the water content. The plastic constitutive relation was described by two methods. In cyclic loading and unloading tests, the remolded loess exhibited hysteresis (a phase lag), which led to dissipation of the mechanical energy. And no compaction limit phenomenon was found. A simple mathematical model was proposed to predict the plastic cyclic characteristics, and it was validated by the new test data.

Details

Language :
English
ISSN :
16878434 and 16878442
Volume :
2019
Database :
Directory of Open Access Journals
Journal :
Advances in Materials Science and Engineering
Publication Type :
Academic Journal
Accession number :
edsdoj.04bb0fac55244b4a214fc2074846342
Document Type :
article
Full Text :
https://doi.org/10.1155/2019/6038505