油管螺纹参数对疲劳寿命的影响

Influence of Tube's Geometrical Parameters on Fatigue Life

油管螺纹的几何尺寸是衡量油管疲劳寿命的一项重要技术指标。应用有限元在改变螺纹参数的情况下模拟油管几何形貌,计算应力分布并预测其疲劳寿命,针对油管螺纹参数对其疲劳寿命的影响趋势进行了研究。

Tube＇s geometrical parameter in an important technical index which scales tube＇s fatigue life. In this text, by changing tube＇s geometrical parameter in the finite element, stress and fatigue life are gotten. And influencing trend of every geometrical parameter is researched.