›› 2011, Vol. 32 ›› Issue (5): 1297-1302.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Analysis of transformation conditions and influence factors of uni-body and bi-body models under axial compression

YI Cheng, ZHU Hong-guang, WANG Hong-tao, LIU Zheng, PAN Hong   

  1. State Key Laboratory of Coal Resources and Safey Mining, China University of Mining and Technology, Beijing 100083, China
  • Received:2010-02-05 Online:2011-05-10 Published:2011-09-23

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Abstract: The interactions between two materials contacted are important for stability of engineering projects. Based on the actual stress state of two contacted materials, uni-body and bi-body models are employed to study the phenomenon. Through analyzing the test results, we conclude that uni-body model can be considered as bi-body model under certain conditions. In addition, the parameters which affect the two models are also analyzed. There are two important parameters that affect the mechanical performance of uni-body model, one is the strength ratio k between two materials; and other is the cohesion c of contact surface. Apart from the main parameter k, fracture toughness ratio ?, volume ratio ? and the surface roughness are influence factors for the mechanical behaviors of bi-body model

Key words: uni-body and bi-body models, transformation conditions, influence factors

CLC Number: 

  • TU 47
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