基于ABAQUS特殊螺纹接头的螺纹参数优化设计

ABAQUS Premium Connection-based Optimized Design of Thread Parameters

利用ABAQUE有限元仿真软件分析Ф244.48 mm×11.99 mm规格某特殊螺纹接头,研究不同螺纹参数对其结构完整性和密封完整性的影响,并优化特殊螺纹接头参数。优化后的特殊螺纹接头参数为:螺距4～5牙/in,承载面角度-4°～-3°,导向面角度10°～25°,鼻端长度13～20 mm,密封面采用锥面/弧面配合。分析认为:优化后的螺纹接头模型具有良好的连接强度和优异的密封性能,其螺纹接头性能优于国内某特殊螺纹接头和国际某典型特殊螺纹接头。

A certain φ244.48mm×11.99mm premium connection is analyzed with the ABAQUE finite element (FE) simulation software so as to study the effect by different thread parameters on the structural integrity and the sealing integrity thereof.And the parameters of the premium connection are optimized,resulting in parameters i.e.,pitch:4-5 tooth/in;bearing surface angle:-4°-3°;guiding surface angle:10°-25°;nose end length:13-20mm;and conical surface/curved surface-matched scaling surface.The analysis result shows that the optimized premium connection model features good joint strength and excellent sealing performance,and that the thread connection performance is better than a certain home-made premium connection,and a certain foreign-made well-known premium connection as well.