Investigation of mechanical behavior of buried DN110 polyethylene pipe with a scratch defect under land subsidence

In this work, a rigorous 3D finite element (FE) model was established to investigate the mechanical behavior of buried DN110 High-density polyethylene (HDPE) pipe with a scratch defect under land subsidence. Parametric effects, including soil gravity, defect geometric, operating pressure, transition section length, and land subsidence displacement, were investigated to analyze the significance of each factor on mechanical stress field. Then the...