Share Email Print
cover

Proceedings Paper

The dynamic mechanical behavior of insaturated clay under quasi-one-dimensional strain state
Author(s): Song-ji Jing; Fang-yun Lu; Rong Chen; Jin-gui Qin; Chun-jing Pang
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

An improved split Hopkinson pressure bar (SHPB) method with passive confined pressure was used to study the dynamic mechanical behaviors of an insaturated clay under quasi-one dimensional strain state. Experimental results show that both modulus of elasticity and yield strength of the clay were sensitive to strain rates. The confined pressures of the specimens were also obtained from the dynamic tests. In addition, the quasi-static responses of the clay were obtained with the unconsolidated and undrained (UU) test with confined pressure from 0.1MPa to 1MPa. Results of the quasi-static experiments show that the yield strength of clay increased with the confined pressure. The quasi-static and dynamic stress-strain behavior of the clay under confinement exhibited an elastic-plastic-like response. Based on the results of both dynamic and quasi-static tests, a phenomenological elastic-plastic type of material model was employed to describe the strain-rate-dependent properties of the clay under tri-axial state of stress, which agreed well with the experimental results.

Paper Details

Date Published: 25 August 2009
PDF: 6 pages
Proc. SPIE 7375, ICEM 2008: International Conference on Experimental Mechanics 2008, 737564 (25 August 2009); doi: 10.1117/12.839367
Show Author Affiliations
Song-ji Jing, National Univ. of Defense Technology (China)
Fang-yun Lu, National Univ. of Defense Technology (China)
Rong Chen, National Univ. of Defense Technology (China)
Jin-gui Qin, National Univ. of Defense Technology (China)
Chun-jing Pang, National Univ. of Defense Technology (China)


Published in SPIE Proceedings Vol. 7375:
ICEM 2008: International Conference on Experimental Mechanics 2008
Xiaoyuan He; Huimin Xie; YiLan Kang, Editor(s)

© SPIE. Terms of Use
Back to Top