摘要
Two kinds of FACs which contain the crack configuratrion parameter were developed, to reflect the fact that the exact J-integral FACs of the circumferentially cracked pipe for different crack configuration are wide scattering, especially for load with bending moment. One is the FAC described by material stress-strain parameter and crack configuration parameter, which is similar to R6 op.2 FAC. Another is the general FAC containing crack configuration parameter, which is similar to R6 op.1 FAC. The accuracy and the science significance of those FACs were idscussed in detail in this paper. Not only those FACs take on the advantages of R6 FACs, but also the accuracy of them is better than R6 FACs for defect assessment of piping containing circumferential flaws.
Two kinds of FACs which contain the crack configuratrion parameter were developed, to reflect the fact that the exact J-integral FACs of the circumferentially cracked pipe for different crack configuration are wide scattering, especially for load with bending moment. One is the FAC described by material stress-strain parameter and crack configuration parameter, which is similar to R6 op.2 FAC. Another is the general FAC containing crack configuration parameter, which is similar to R6 op.1 FAC. The accuracy and the science significance of those FACs were idscussed in detail in this paper. Not only those FACs take on the advantages of R6 FACs, but also the accuracy of them is better than R6 FACs for defect assessment of piping containing circumferential flaws.
出处
《压力容器》
2000年第1期22-33,共12页
Pressure Vessel Technology
基金
国家"九五"科技攻关项目
