RESEARCH ON DAMAGE VISCOELASTIC DYNAMIC CONSTITUTIVE MODEL OF SOFT ROCK AND CONCRETE MATERIALS
XIE Lixiang1，2，ZHAO Guangming1，2，MENG Xiangrui1
(1. Key Laboratory on Safe and Effective Coal Mining Sponsored by Anhui Province and Ministry of Education，Anhui University of Science and Technology，Huainan，Anhui 232001，China；2. State Key Laboratory of Coal Resources and Safe Mining，
China University of Mining and Technology，Xuzhou，Jiangsu 221116，China)
Abstract：According to the characters of stress-strain curves of soft rock and concrete under impact load，and combining the features of damage body and viscous body，a damage viscoelastic dynamic constitutive model was established. The damage viscoelastic dynamic constitutive model，which was based on the Zhu-Wang-Tang model，was developed by using damage body to be instead of elastic unit of Zhu-Wang-Tang model. In order to prove the rationality of damage viscoelastic dynamic constitutive model，constitutive functions are fitted out respectively on the basis of the experimental data in split Hopkinson pressure bar(SHPB) experimental system. There is a good consistence between the fitting stress-strain curves and the experimental stress-strain curves. Consequently，it can offer reference for further research on dynamic constitutive model of soft rock and concrete and engineering application in underground engineering.
谢理想1，2，赵光明1，2，孟祥瑞1. 软岩及混凝土材料损伤型黏弹性动态本构模型研究[J]. 岩石力学与工程学报, 2013, 32(4): 857-864.
XIE Lixiang1，2，ZHAO Guangming1，2，MENG Xiangrui1. RESEARCH ON DAMAGE VISCOELASTIC DYNAMIC CONSTITUTIVE MODEL OF SOFT ROCK AND CONCRETE MATERIALS. , 2013, 32(4): 857-864.
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2013, Vol. 32 
