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

作者：Yi Cheng^*; Zhu Hong Guang; Wang Hong Tao; Liu Zheng; Pan Hong

来源：Yantu Lixue/rock and Soil Mechanics, 2011, 32(5): 1297-1302+1376.

• Contact surface
• Engineering project
• Fracture toughness ratio
• Influence factors
• Main parameters
• Mechanical behavior
• Mechanical performance
• Strength ratios
• Stress state
• Test results
• Transformation conditions
• Two-materials
• Uni-body and bi-body models
• Volume ratio

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 ξ, volume ratio ω and the surface roughness are influence factors for the mechanical behaviors of bi-body model.

• 出版日期2011
• 单位中国矿业大学（北京）