本文關鍵詞：擴口式管接頭擰緊過程扭拉關系研究　出處：《潤滑與密封》2017年05期 　論文類型：期刊論文

  更多相關文章： 擴口式管接頭 擰緊過程 扭拉關系 六面體網格

【摘要】：對擴口式管接頭擰緊過程中各組件進行力學分析,分析接觸面在裝配過程中的接觸狀態(tài)。結果表明:擴口式管接頭在擰緊過程中的6個接觸面中,相對滑動的接觸面有3個,分別是螺母與管接頭之間的螺紋接觸面,管套與螺母之間的環(huán)形接觸面,管套與螺母之間的圓柱接觸面。基于普通螺栓連接的扭拉關系,建立擴口式管接頭扭拉關系的理論公式,采用六面體網格建模方法建立擴口式管接頭(包含螺紋和升角)的仿真模型,并對擴口式管接頭間隙及過渡2種配合形式的扭拉關系進行理論和仿真計算。結果表明:管套與螺母圓柱接觸面為間隙配合時,扭拉關系理論公式的計算結果是非常準確的;管套與螺母圓柱接觸面為過渡配合時,理論公式可能產生非常顯著的誤差,需要引入修正系數(shù)。
[Abstract]:The mechanical analysis of the components during the tightening process of the expanded pipe joint was analyzed, and the contact state of the contact surface during the assembly process was analyzed. The results show that there are 3 relative sliding interfaces in the 6 contact faces of the expansion joint, which are the threaded contact surface between the nut and the pipe joint, the annular contact surface between the tube sleeve and the nut, and the cylindrical contact surface between the tube sleeve and the nut. Ordinary bolt torsion based on the relationship of the flared joint torsion theory formula relations, establish flaredfitting using hexahedral mesh modeling methods (including thread and angle) of the simulation model, and the flared type tube gap and transition joint 2 kinds of tension relationship between theory and simulation calculation the form of torsion. The results show that the calculation results of torsional relation theory formula are very accurate when the connection between tube sleeve and nut cylinder is in clearance fit. When the transition between pipe sleeve and nut cylinder interface is transitional, the theoretical formula may produce very significant error, and correction coefficient is needed.
【作者單位】： 北京理工大學機械與車輛學院;
【分類號】：TH13
【正文快照】： )j縥縥縥縥縥縥縥縥，

本文編號：1341214