›› 2004, Vol. 25 ›› Issue (12): 1910-1914.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Research on strength test of sandstone with MTS and its chaotic features in different stages

LIU Chuan-xiao   

  1. College of Resources and Environment Engineering, Shandong University of Science and Technology, Tai’an 271019, China
  • Received:2003-08-13 Online:2004-12-10 Published:2014-08-19

Abstract: Analyzing records of sandstone strength from rock material test system, this paper finds that whole curves of strain-stress of three typical sandstone specimens have common features of stages, and the discrete feature of curve is often in strain-softening stage. After data series of test being detected by dynamics of chaos, it presents that system of whole process of strain-stress evolutes from high chaos state to low chaos state even ordered steady state, system after compressive strength which curve of strain-stress is more linear one by one changes from strong chaos state to strong ordered steady state; and joint system of sandstone before compressive strength normally generates weak chaos state, with increase of uniaxial compressive strength of sandstone specimens. Method of rock mechanics test is reliable. That dynamics of chaos used to study features of different stages of sandstone strength has some theoretic value.

Key words: rock material test system, strength of sandstone, features of stages, chaos;dynamics, joint system

CLC Number: 

  • TU 458
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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