Numerical Analysis of Stress Intensity Factor of Surface Inclined Cracks at Intersection of Cylindrical Vessels and Nozzles

HE Jia-sheng; ZHU Wei-wei; LI Shu-rong; WU Yuan-xin; XUAN Ai-guo; ZHU Xiao-ming; LU Yuan-ming; YANG Feng

Oct. 2010

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Article Navigation > Nuclear Power Engineering > 2010 > 31(5): 1-4,8

HE Jia-sheng, ZHU Wei-wei, LI Shu-rong, WU Yuan-xin, XUAN Ai-guo, ZHU Xiao-ming, LU Yuan-ming, YANG Feng. Numerical Analysis of Stress Intensity Factor of Surface Inclined Cracks at Intersection of Cylindrical Vessels and Nozzles[J]. Nuclear Power Engineering, 2010, 31(5): 1-4,8.

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Numerical Analysis of Stress Intensity Factor of Surface Inclined Cracks at Intersection of Cylindrical Vessels and Nozzles

1. School of Mechanical Engineering, Wuhan Institute of Technology, Wuhan, 430074, China;
2. Wuhan Subsidiary Company, China Petrochemical, Co. Ltd., Wuhan, 430082, China;
3. China Shipbuilding Industry Special Equipment Co. Ltd., 430071, Wuhan, China

Received Date: 2009-07-10
Rev Recd Date: 2009-09-05

Available Online: 2025-07-31

Abstract

Abstract

A fracture mechanics finite element analysis model of cylindrical pressure vessel with an opening nozzle is established through setting singular elements in the forefront of cracks.A stress intensity factor（SIF） automatically-calculated software of surface inclined cracks at the intersection of cylindrical vessels and nozzles which can be communicated with ANSYS program is programmed with Visual Basic.Based on the calculated SIF values of the cracks of different geometrics subjected to internal pressure,the SIF curves varying with relative depths of cracks,crack relative radians,diameter ratio of vessels and nozzles and crack inclined angle have been obtained.
- Opening nozzle,
- Stress intensity factor,
- Surface inclined crack,
- Singularity