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《Earth Science Frontiers》 2008-03
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The Kelvin model describing rock materials with behaviour of a viscoelastic solid.

Liu Ruixun1, Zhang Bingliang2, Zhang Chen1 1.School of Earth and Space Sciences, Peking University, Beijing 100871,China2.Institute of Geology, China Earthquake Administration, Beijing 100029,China  
Most solid materials behave elastically, but the real solids rarely behave exactly according to the elastic Hook's law. It is often found that the solid deformations are time dependent. This behavior is studied in rheology. Rocks are the common solid materials in nature, and their mechanical behavior can be described exactly by Hook's law under general condition. Under a long period of time condition such as in a geological process the rocks present their rheological behavior gradually. The slower the geological process is, the more obvious the time dependent behavior of the rock is. For accurately describing rock mechanical behavior in a geological process the rheology analysis has been used in geology. The authors have introduced a rheological model, the Maxwell model, describing the materials with the behavior of a Newtonian liquid, and now we introduce another rheological model, the Kelvin model, describing the materials with the behavior of a viscoelastic solid. The same as the Maxwell model, the Kelvin model is also a basic rheological model. The Kelvin model is built up with an elastic unit and a dashpot unit in parallel arrangement. The constitutive equation for the model and its application in geology are given briefly here in this paper.
【Fund】: 国家自然科学基金资助项目(40572127 40772142)
【CateGory Index】: P589
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【Citations】
Chinese Journal Full-text Database 2 Hits
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