Analysis of biaxial loading effect on fracture toughness of reactor pressure vessel steels

被引：19
|
作者：
Margolin, BZ [1 ]
Kostylev, VI [1 ]
机构：
[1] Cent Res Inst Struct Mat Prometey, St Petersburg 193015, Russia
来源：
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING | 1998年 / 75卷 / 08期
关键词：
biaxial loading; fracture toughness; reactor pressure vessel steels;
D O I：
10.1016/S0308-0161(98)00056-8
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The local stress-strain state (SSS) near the crack tip and its connection with the crack tip opening displacement and J-integral under biaxial loading have been studied by finite element methods in elastic-plastic finite strain statement. Numerical investigations have been performed for various crack lengths and two types of biaxial loading (tension and bending) under conditions of small- and large-scale yielding. To predict the biaxial loading effect on cleavage fracture toughness, the procedure has been elaborated, this being based on the revealed regularities for SSS near the crack tip under biaxial loading and brittle fracture criterion proposed earlier. Prediction of the biaxial loading effect on cleavage fracture toughness has been performed as applied to reactor pressure vessel steel. The calculated results have been compared with available experimental data. Alternative approaches for prediction of the biaxial loading effect on fracture toughness have been discussed. (C) 1998 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：589 / 601
页数：13
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