【摘要】 通过对使用一个周期,受损伤失稳变形的和近乎完好的波纹管疲劳载荷实验,结合交变载荷下的应力分析,以及失效件宏观和微观疲劳断口的显微分析,探讨了波纹管损伤的形成,裂纹的扩展,直至断裂全过程,揭示了管网体系中波纹管的损伤疲劳失效机理.更多还原

【Abstract】 Through the fatigue load testing of deformed and nearly intact bellows which had been operated for one cycle, stress analysis at changing load conditions and microscopic analysis of micro and macro fatigue cracks, complete process from the initial formation of bellow damages, crack development to final cracks was studied. The mechanisms of fatigue failure of pipeline system was revealed.更多还原