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For the difficulty of applying classical fracture criteria to the actual hydraulic engineering and silulating the process of cracking by conditional FEM, the XFEM is introduced into the analysis of the seepage field in hydraulic structures in this paper. Firstly, analyze the enriched forms of nodes in elements intersecting with cracks, and then build the(More)
For the difficulty of applying classical fracture criteria to the actual hydraulic engineering and silulating the process of cracking by conditional FEM, in this paper, a new method of analyzing and monitoring crack behavior in hydraulic structures under the effect of Hydro-Mechanical (HM) interaction is studied by using the XFEM, in which crack mouth(More)
XLPE cables are widely used in urban distribution systems because of their excellent mechanical, heat and electrical properties. However, water tree, formed due to the existence of water and intense electric field, is one of the primary causes of aging breakdown. There used to be several methods, such as insulation impedance method and DC leakage current(More)
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