Study Of Mechanics Character Of High-molecule Flexible Pipe In The Underground

With the development of pipe and the use of high-molecule material in the pipe, the plastics pipe is instead of traditional pipe which is made of other material. In the irrigation works, the plastics pipe is used in many areas. With the development of technology of low pressure pipe in the irrigation, we need to manufacture new plastics pipe which is used in the irrigation system.The paper applies theories of material mechanics, elasticity mechanics and finite element analyses method. According to the characteristics of flexible pipe, analyze material natural and relation of stress-strain.It discuss the basic working principle of flexible pipe and law of pipe-solid system.The finite element analyses method has been used in the paper. Think over the boundary condition taken into consideration in general equation, consider the every kind of influence factor with general analysis. The theoretical result shows it comply with the similar law of stress, strain and soil pressure distribution as experimental data. This analyses method can further expand kinds of flexible pipe, and supply the dependable basis for manufacture of new plastics pipe. That added the new content to the theoretical analyses.