The analysis and simulation of the pipe collapse deformation

摘要

The processes of pipe collapse under external pressure have be calculated and simulated by means of the ANSYS FEA. It introduces the destruction theory of the pipe and some formula by API, and analyses the factors such as geometries, pressure, and its properties, which affect the capability of the resistance to the pipe collapse. The relationship between strain and stress of pipe has been descried. In addition, X-Component of displacement model provided by ANSYS FEA simulates and analyses the deformation of the pipe under the symmetrical pressure and display the whole simulation pictures in different stages of pipe collapse, which are not easy to been observed through the practical mechanical by testing.