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CLC number: TH49

On-line Access: 2010-06-02

Received: 2009-07-27

Revision Accepted: 2009-11-12

Crosschecked: 2010-03-30

Cited: 4

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Citations:  Bibtex RefMan EndNote GB/T7714

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Journal of Zhejiang University SCIENCE A 2010 Vol.11 No.6 P.440-448

http://doi.org/10.1631/jzus.A0900459


Plastic limit load analysis for pressure pipe with incomplete welding defects based on the extended Net Section Collapse Criteria


Author(s):  Zhi-jiang Jin, Cheng-hang Jiang, Xian-ping Wan, Po Chen, Xiao-fang Wang

Affiliation(s):  Institute of Chemical Process Equipment, Zhejiang University, Hangzhou 310027, China

Corresponding email(s):   jinzhijiang@zju.edu.cn

Key Words:  Net Section Collapse (NSC) Criteria, Incomplete welding defects, Pressure pipe, Plastic limit load, Finite element


Zhi-jiang Jin, Cheng-hang Jiang, Xian-ping Wan, Po Chen, Xiao-fang Wang. Plastic limit load analysis for pressure pipe with incomplete welding defects based on the extended Net Section Collapse Criteria[J]. Journal of Zhejiang University Science A, 2010, 11(6): 440-448.

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author="Zhi-jiang Jin, Cheng-hang Jiang, Xian-ping Wan, Po Chen, Xiao-fang Wang",
journal="Journal of Zhejiang University Science A",
volume="11",
number="6",
pages="440-448",
year="2010",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A0900459"
}

%0 Journal Article
%T Plastic limit load analysis for pressure pipe with incomplete welding defects based on the extended Net Section Collapse Criteria
%A Zhi-jiang Jin
%A Cheng-hang Jiang
%A Xian-ping Wan
%A Po Chen
%A Xiao-fang Wang
%J Journal of Zhejiang University SCIENCE A
%V 11
%N 6
%P 440-448
%@ 1673-565X
%D 2010
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A0900459

TY - JOUR
T1 - Plastic limit load analysis for pressure pipe with incomplete welding defects based on the extended Net Section Collapse Criteria
A1 - Zhi-jiang Jin
A1 - Cheng-hang Jiang
A1 - Xian-ping Wan
A1 - Po Chen
A1 - Xiao-fang Wang
J0 - Journal of Zhejiang University Science A
VL - 11
IS - 6
SP - 440
EP - 448
%@ 1673-565X
Y1 - 2010
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A0900459


Abstract: 
With von Mises yield criterion, the loading range of net Section Collapse (NSC) Criteria is extended from combined tension and bending loadings to combined bending, torsion and internal pressure loadings. A new theoretical analyzing method of plastic limit load for pressure pipe with incomplete welding defects based on the extended NSC Criteria is presented and the correlative formulas are deduced, the influences of pipe curvature, circumferential length and depth of incomplete welding defects on the plastic limit load of pressure pipe are considered as well in this method. Meanwhile, according to the orthogonal experimental design method, the plastic limit loads are calculated by the finite element method and compared with the theoretical values. The results show that the expressions of plastic limit load of pressure pipe with incomplete welding defects under bending, torsion and internal pressure based on extended NSC criteria are reliable. The study provides an important theoretical basis for the establishment of safety assessment measure towards pressure pipe with incomplete welding defects.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

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