多耦合拘束效应对P92钢蠕变裂纹扩展行为的影响*

doi:10.11896/j.issn.1005-023X.2017.022.030

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Abstract Based on fracture mechanics, the creep crack growth (Creep crack growth, CCG) of P92 steel under the high temperatures was simulated and analyzed with different in-plane constraint effects. The study discovers that different constraint effects have an important influence for the behavior of CCG. The influence of specimen geometric shape, size and initial crack depth, especially their coupling constraintson on the behavior of CCG were analyzed. To compare the characteristics of the behavior of CCG under various coupling constraints, some results were found as follow. The effect of specimen geometry on the behavior of CCG is greater than the geometric size, and the effects of specimen size and the initial crack depth on the behavior of CCG are similar. The effects of specimen geometry on the behavior of CCG is greater than the initial crack depth.

Key words： constraint effect P92 steel creep crack growth horizontal comparison finite element analysis

Published: 08 May 2018

CLC number:

TG142.73

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	Articles by authors
	FANG Ruijie
	LIU Jun
	CHEN Jianen
	WANG Xiaofeng

Cite this article:

FANG Ruijie,LIU Jun,CHEN Jianen, et al. Dependence of Creep Crack Growth Behavior of P92 Steel on Multiple Coupling Constraints[J]. Materials Reports, 2017, 31(22): 153-158.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2017.022.030 OR http://www.mater-rep.com/EN/Y2017/V31/I22/153

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