Evaluation of Softening Zone in X80 Pipeline Steels under Tension-bending Load
Liu Ligang1Zhang Chaofan1Liu Yu2Sun Shumao1Yu Hui1
1. College of Mechanical Engineering,Yanshan University2. China Petroleum Pipeline Research Institute
摘要：Softening of heat-affected zone of X80 pipeline steel is common in weld joints.The finite element analysis model was established based on ABAQUS software in this paper,then the numerical simulation of the strain capacity of X80 steel pipe was carried out under tension-bending load.Researches show that the softening zone width has little influence on service performance of the pipelines under tension-bending load.When the softening rates are 5%,10% and 15%,the peak values of load are similar.However,structural instability of the pipeline with softening rate 15% is worse and more serious.The pipeline with design coefficient of 0 can withstand greater deformation under tension-bending load,and it can keep good performance.
基金：
the financial support from the National Natural Science Foundation of China（No.51205342 and No.51275445）； Natural Science Foundation of Hebei Province of China（No.E2016203217）；
会议名称：
2017 5th International Conference on Mechanical, Automotive and Materials Engineering（CMAME 2017）
会议时间：
2017-08-01
会议地点：
中国广东广州
- 专辑：
工程科技Ⅰ辑
- 专题：
金属学及金属工艺
- 分类号：
TG457.11
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