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Shock and Vibration
Volume 2017 (2017), Article ID 8329545, 6 pages
https://doi.org/10.1155/2017/8329545
Research Article

A Damaged Constitutive Model for Rock under Dynamic and High Stress State

State Key Laboratory Base of Eco-Hydraulic Engineering in Arid Area, Xi’an University of Technology, 5 South Jinhua Road, Xi’an, Shaanxi 710048, China

Correspondence should be addressed to Yan-Long Li; nc.ude.tuax@gnolnayil

Received 8 November 2016; Revised 12 January 2017; Accepted 16 January 2017; Published 23 February 2017

Academic Editor: Salvatore Russo

Copyright © 2017 Yan-Long Li and Zong-Yuan Ma. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The main research work of this paper focuses on the theoretical prediction of the constitutive relationship for rock, concrete, and other quasi-brittle materials under dynamic and complex stress state and the influence of dynamic mechanical behavior of rock on practical engineering problems was studied. A damaged elastoplastic model (DEPM) is established for the investigation and prediction of static or dynamic mechanical behavior of rock material. The mechanical behavior (brittleness or plasticity) and dynamic response (due to underground impact pressure and high-velocity impact of projectile) of rock under high in situ stress were investigated via the DEPM combined with the explicit finite element method. This paper suggests the influence of the brittle or plastic mechanical behavior of rock material on deep underground rock engineering.