Effect of Localized Flow on Fracture of Reactor Components. (Final Report, June 1, 2003-December 31, 2008).

Kumar, A. S.

Technical Information Center Oak Ridge Tennessee

关键词: Nuclear reactors;    Fractures;    Flow localization;    Openings;    Reactor components;   

RP-ID  :  DE2009945379

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

The effect of flow localization on plastic flow and fracture due to stress concentrations in type 316 stainless steel was studied by dynamic finite element modeling (FEM) using a computer code (ABAQUS Explicit). It was found that the presence of cracks is responsible for a sharp decrease in fracture energy of specimens. The dependence of fracture energy on crack depth is exponential. For round specimens with no cracks, the fracture energy is directly proportional to cross-sectional area.