Numerical Simulation and Safety Assessment Analysis for Pressure Pipe with Incomplete Penetration Defects

2018 International Conference on Advanced Materials, Intelligent Manufacturing and Automation

材料科学;机械制造;运输工程

Ren, Facai^1 ; Li, Bo^1 ; Tang, Xiaoying^1

Shanghai Institute of Special Equipment Inspection and Technical Research, Shanghai Engineering Research Center of Pressure Pipeline Intelligent Inspection, Shanghai

200062, China^1

关键词: Collecting pipes;    Fracture behavior;    Low stress;    Pressure pipes;    Refrigerating systems;    Safety assessments;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/382/5/052052/pdf
DOI  :  10.1088/1757-899X/382/5/052052

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

A head of a gas collecting pipe used in ammonia refrigerating system dropped off during applications. The cause for head fracture was investigated by means of numerical simulation and safety assessment analysis. The results indicate that the fracture reason of welded joint is also influedced by the brittle fracture behavior under low stress.