动车组用扩口式导管旋转弯曲疲劳及有限元模拟分析研究
Journal: Engineering Technology Development DOI: 10.32629/etd.v6i5.16906
Abstract
当前扩口式导管因其便捷性已广泛应用于各类飞机中低压管道中,但其在旋转弯曲疲劳下表面形貌的演化分析因其难以预测性尚未有解决方案,而最终导致导管渗漏的关键原因就是旋转弯曲疲劳导致的微动磨损行为。本研究首次将航空扩口式导管应用于高速动车组,主要通过分析扩口式导管不同旋转弯曲疲劳次数后对其表面进行原位检测,分析其表面形貌的演化规律,同时通过分析其微动磨损行为。结果表明,在管子接触面上出现了两种磨损形式：孔洞、划痕,对应了径向磨损和切向磨损两种微动磨损类型,在高接触压力区域和扩口面最外侧微动磨损最严重,同时通过有限元模拟分析旋弯过程中扩口面的受力情况。
Keywords
扩口式导管；旋转弯曲疲劳；微动磨损；有限元模拟
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