双轴拉伸载荷下疲劳裂纹扩展行为的研究

RESEARCH ON THE EXTENSION BEHAVIOUR OF FATIGUE CRACKS CAUSED BY A BIAXIAL TENSION

本文在薄壁压力容器焊接接头疲劳试验报导的基础上,进一步讨论双轴拉伸疲劳裂纹扩展行为。探讨疲劳裂纹产生机理、扩展方向及影响疲劳裂纹扩展的主要因素。

A further research on the extension behaviour of fatigue cracks by a biaxial tension is dealt with based on the report 'An Investigation into the Welded Joint Fatigue of a Thin-walled Pressure Container', putting emphasis on the exploration of mechanism of the creation, and the extension direction of fatigue crack extension, as well as on the factors which affect the fatigue crack extension.