[1]郑茂盛,刘姣姣,王 怡,等.考虑变形硬化的管道塑性弯曲屈曲临界应变预测[J].焊管,2020,43(1):1-6.[doi:10.19291/j.cnki.1001-3938.2020.01.001]
　ZHENG Maosheng,LIU Jiaojiao,WANG Yi,et al.Prediction for Pipeline Plastic Flexural Buckling Critical Strain under Deformation-hardening[J].,2020,43(1):1-6.[doi:10.19291/j.cnki.1001-3938.2020.01.001]
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考虑变形硬化的管道塑性弯曲
屈曲临界应变预测()
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
43
期数:
2020年第1期
页码:
1-6
栏目:
综述
出版日期:
2020-01-28

文章信息/Info

Title:
Prediction for Pipeline Plastic Flexural Buckling Critical Strain under
Deformation-hardening
文章编号:
10.19291/j.cnki.1001-3938.2020.01.001
作者:
郑茂盛; 刘姣姣; 王 怡; 魏利平; 滕海鹏; 胡 军
西北大学 化工学院载能技术及应用研究所，西安 710069
Author(s):
ZHENG Maosheng;  LIU Jiaojiao;  WANG Yi;  WEI Liping;  TENG Haipeng;  HU Jun
Institute for Energy Transmission Technology and Application, School of Chemical Engineering, Northwest University, Xi’an 710069, China
关键词:
管道; 弯管; 临界屈曲应变; 横截面椭圆化; 塑性变形; 应变硬化效应
Keywords:
pipeline;  bend;  critical buckling strain;  cross section ovalization;  plastic deformation;  strain-hardening
分类号:
TG113.25
DOI:
10.19291/j.cnki.1001-3938.2020.01.001
文献标志码:
A
摘要:
为了正确评估管道弯曲屈曲的临界应变，在考虑变形硬化对管道塑性弯曲的影响的基础上，对基于截面椭圆化模型的管道塑性弯曲屈曲的临界应变评估方法进行改进，提出一个考虑变形硬化的管道塑性弯曲屈曲的临界应变预测方法。其中，管道材料的应变硬化属于Hollomon类型。此外，使用文献中的测试数据对所提出的表达式进行了检验。结果表明，所提出的预测表达式能够合理地揭示应变硬化行为对管道塑性弯曲时临界屈曲应变的影响，为预防管道弯曲屈曲导致的基于强度的管道设计失效提供帮助。
Abstract:
In order to correctly evaluate the pipeline plastic flexural buckling critical strain，considering the influence of deformation-hardening on pipeline plastic bending，the critical strain evaluation method of pipeline plastic flexural buckling based on cross section ovalization model is improved，and a critical strain prediction method for pipeline plastic flexural buckling critical strain under deformation-hardening is proposed. The deformation-hardening of pipeline materials is Hollomon type，and the proposed expression was examined using the test data in the literature. The results show that the proposed predictive expression can reasonably reveal the influence of strain-hardening behavior on pipeline plastic flexural buckling critical strain，and provide help to prevent the failure of strength-based pipeline design caused by pipeline plastic flexural buckling.

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备注/Memo

备注/Memo:
收稿日期：2019-03-16
作者简介：郑茂盛（1962—），教授，博导，现主要从事材料物理与力学、腐蚀与防护以及材料和结构安全性等技术研究。
更新日期/Last Update: 2020-02-21