LARGE STABLE CRACK-GROWTH IN FRACTURE-MECHANICS SPECIMENS

被引：13
|
作者：
BROCKS, W
EBERLE, A
FRICKE, S
VEITH, H
机构：
[1] BUNDESANSTALT MAT FORSCH & PRUFUNG,D-12205 BERLIN,GERMANY
[2] DEUTSCH EISENBAHN CONSULTING,BERLIN,GERMANY
来源：
NUCLEAR ENGINEERING AND DESIGN | 1994年 / 151卷 / 2-3期
关键词：
D O I：
10.1016/0029-5493(94)90183-X
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
According to the J concept, information is reported about the crack resistance behaviour up to 8 mm crack growth of side-grooved CT-25 as well as CCT-25 specimens made from German standard steel StE 460. Numerical simulations controlled by J(R) curves make the calculation of J from the stresses and strains of specimen models during large crack growth feasible. These data allow a comparison to standards and rules describing the evaluation of J from experiments. Using stress, strain and displacement fields from a plane-strain finite-element analysis, the extended J concept is discussed concerning larger ductile crack growth. Additionally, the distribution of other fracture mechanics parameters such as the crack tip opening displacement (CTOD) and the crack tip opening angle (CTOA) are presented for larger crack growth.
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页码：387 / 400
页数：14
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