Simulation of casing connection and optimization on end pitch of coupling
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摘要: 針對API 8牙圓螺紋石油套管接頭建立了軸對稱有限元分析模型,分析了機緊狀態下不同參數接頭的典型應力應變及接觸行為規律.通過對接箍起始斜度的優化研究發現,接箍最佳起始斜度為50-55°.該結果成功地應用于生產實際.Abstract: An axial symmetric FEM model is established for API 8 tooth round thread casing connection. The contact behavior and stress-strain distribution in the connection area are analyzed when the connection is screwed down by machine, especially under different end pitch values. Through investigating the effect of end pitch, it is proposed that the best pitch of the hoop should be 50-55°. This result has been successfully used in practice.
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Key words:
- casing connection /
- round thread /
- end pitch /
- FEM
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