An Overview on Studies of Stress State Effects During Creep of Circumferentially Notched Bars
An Overview on Studies of Stress State Effects During Creep of Circumferentially Notched Bars
复制标题
周向缺口棒材蠕变过程中应力状态效应研究综述
DOI：
10.1007/978-94-009-3415-3_9
复制
发表时间：
1986
期刊：
影响因子：
--
通讯作者：
G. Webster
中科院分区：
文献类型：
--
作者：
D. Hayhurst;G. Webster
对于需要长时间在高温下工作的结构来说，过度蠕变变形或断裂是一个重要的设计考虑因素。通常，这些部件受到三轴应力状态的影响，这是由加载模式或由引起局部应力集中的截面急剧变化引起的。在这种情况下，为了确定有用部件的使用寿命，需要掌握材料在多轴应力作用下的行为规律。特别值得关注的是三轴拉伸状态，因为这些状态抑制变形，增强断裂过程，并可能导致过早破坏。
Failure by excessive creep deformation or fracture is an important design consideration in structures which are required to operate at elevated temperatures over long periods of time. Often these components are subjected to triaxial states of stress resulting from the mode of loading or from sharp changes in sections which cause local stress concentrations. In order to determine useful component lifetimes in such circumstances, laws governing material behaviour under multiaxial stressing are needed. Of particular concern are states of triaxial tension since these inhibit deformation, enhance fracture processes, and can cause premature failure.