Abstract: The contact condition, stress-strain field and shape
optimization of thread profile for drillpipe connector are
investigated by semi-analytical finite element method for
contact problem in order to enhance the load capacity and reduce
the fatigue accident of drillpipe thread compounds.
Key words: Drillpipe
Thread Elastoplastic Analysis Contact Shape optimization
*
This project
is supported by Open Foundation from the State Key Lab. Of Oil-gas
Geology and Development Engineering (No.PlN9740). Manuscript
received on March 9, 1999; revised manuscript September 15, 1999
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