A typical bolted flange connection (see Fig.1) is modeled in this example. Fig.1. The geometry of the model. Only the 1/4 model is created due to symmetry. The challenges in this example are as follows: Complicated geometry. Applying pretension to bolts. Multiple load steps. Modeling contact. It is worth mentioning that a special element Prentension179 … Continue reading Contact analysis: a bolted flange connection
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Wear analysis of casing coupling
Fig.1. Typical casing couplings Because the reciprocating and rotary motion of the drill pipe in the casing is eccentric, the radial and axial friction between the drill pipe and the casing causes serious wear on the outer surface of the drill pipe and the inner surface of the casing. This wear mostly occurs at the … Continue reading Wear analysis of casing coupling
Xutao Sun 