Time-dependent analysis of buried high-density polyethylene (PE100) pipelines with a scratch defect subjected to touchdown impact loading of blasting collapsed body

Dynamic buckling response of buried X70 steel pipe with bolted flange connection under two-charge explosion loads

“…However, it is easily affected due to the test conditions of external geology, the high cost of the test, and the high accuracy of the test equipment. With the development of computer technology, numerical studies have been extensively carried out to the dynamic characteristics of buried pipes under explosion loads [ [19] , [20] , [21] , [22] , [23] , [24] ]. For instance, Lu and his coworkers established a multiphase coupled model of pipe, soil and fluid within the pipe to describe structural dynamic response of buried pipe subjected to external explosion load [ 20 ].…”

“…They pointed out that the vibration speed of the pipe could be decreased. An et al [ 24 ] numerically investigated the dynamic response of buried PE100 gas pipes containing a scratch defect under impact load of collapsed body.…”

Analysis via 3D FEM of the Passing Capacity of Pipeline Inspection Gauges in Bends with Different Curvatures

“…Small-diameter pipelines (where the diameter of the pipe is less than 150 mm) are widely used in oil field stations and refineries, typically using bends with a curvature radius of 3D to 5D [1][2][3][4][5]. Due to the complex pipeline-laying conditions in the ocean and the presence of corrosive media, many pipelines face corrosion failure and the risk of major safety accidents [6][7][8].…”