[1]鄭茂盛,劉姣姣,王 怡,等.考慮變形硬化的管道塑性彎曲屈曲臨界應變預測[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]
點擊復制

考慮變形硬化的管道塑性彎曲
屈曲臨界應變預測
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
43
期數:
2020年第1期
頁碼:
1-6
欄目:
行業綜述
出版日期:
2020-01-28

文章信息/Info

Title:
Prediction for Pipeline Plastic Flexural Buckling Critical Strain under
Deformation-hardening
文章編號:
10.19291/j.cnki.1001-3938.2020.01.001
作者:
鄭茂盛劉姣姣王 怡魏利平滕海鵬胡 軍
西北大學 化工學院載能技術及應用研究所,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
關鍵詞:
管道彎管臨界屈曲應變橫截面橢圓化塑性變形應變硬化效應
Keywords:
pipeline bend critical buckling strain cross section ovalization plastic deformation strain-hardening
分類號:
TG113.25
DOI:
10.19291/j.cnki.1001-3938.2020.01.001
文獻標志碼:
A
摘要:
為了正確評估管道彎曲屈曲的臨界應變,在考慮變形硬化對管道塑性彎曲的影響的基礎上,對基于截面橢圓化模型的管道塑性彎曲屈曲的臨界應變評估方法進行改進,提出一個考慮變形硬化的管道塑性彎曲屈曲的臨界應變預測方法。其中,管道材料的應變硬化屬于Hollomon類型。此外,使用文獻中的測試數據對所提出的表達式進行了檢驗。結果表明,所提出的預測表達式能夠合理地揭示應變硬化行為對管道塑性彎曲時臨界屈曲應變的影響,為預防管道彎曲屈曲導致的基于強度的管道設計失效提供幫助。
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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備注/Memo

備注/Memo:
收稿日期:2019-03-16
作者簡介:鄭茂盛(1962—),教授,博導,現主要從事材料物理與力學、腐蝕與防護以及材料和結構安全性等技術研究。
更新日期/Last Update: 2020-02-21
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