摘要
海洋管道疲劳寿命的评估一般采用小尺寸试件,若采用全尺寸疲劳试验可更真实反映管道中裂纹扩展的实际情况,包括尺寸效应、残余应力等的影响。文章介绍了国内首台自行研制的管道全尺寸疲劳试验机,包括系统构成、主要功能、机械及液压系统设计和控制系统研制等,重点叙述了主机框架设计及强度计算,试验机主要技术参数,系统工作原理以及特点。
Small-scale test pieces are commonly used for assessing fatigue lives of marine pipelines,but full-scale fatigue test can reflect more actual state of crack extension in pipeline,including size effect,residual stress,etc.This paper introduces the first full-scale fatigue test machine for marine pipeline in China devel oped by CNPC Research Institute of Engineering Technology,including system composition,main func tions,mechanical and hydraulic system design,control system development,etc.The host framework design and strength calculation,the main technical parameters,the working principle and characteristics of the test machine are highlighted in the paper.
出处
《石油工程建设》
2013年第3期20-25,24,共6页
Petroleum Engineering Construction
关键词
海洋管道
疲劳寿命评估
全尺寸疲劳试验机
研制
marine pipeline
fatigue life assessment
full-scale fatigue test machine
development
