Ultimate Bending Capacity of Strain Hardening Steel Pipes

Based on Hencky＇s total strain theory of plasticity,ultimate bending capacity of steel pipes can be determined analytically assuming an elastic-linear strain hardening material,the simplified analytical solution is proposed as well.Good agreement is observed when ultimate bending capacities obtained...

Full description

Saved in:
Bibliographic Details
Published inChina ocean engineering Vol. 30; no. 2; pp. 231 - 241
Main Author 陈严飞 张娟 张宏 李昕 周晶 曹静
Format Journal Article
LanguageEnglish
Published Nanjing Chinese Ocean Engineering Society 01.04.2016
Subjects
Coastal Sciences
Engineering
Fluid- and Aerodynamics
Marine & Freshwater Sciences
Numerical and Computational Physics
Oceanography
Offshore Engineering
Simulation
塑性理论
应变硬化材料
抗弯能力
极限抗弯承载力
理想弹塑性
硬化效应
试验参数
钢管
steel pipes
ultimate bending capacity
strain hardening
Hencky’s total strain
Online AccessGet full text
ISSN0890-5487
2191-8945
DOI10.1007/s13344-016-0014-x

Cover

More Information
Summary:Based on Hencky＇s total strain theory of plasticity,ultimate bending capacity of steel pipes can be determined analytically assuming an elastic-linear strain hardening material,the simplified analytical solution is proposed as well.Good agreement is observed when ultimate bending capacities obtained from analytical solutions are compared with experimental results from full-size tests of steel pipes.Parametric study conducted as part of this paper indicates that the strain hardening effect has significant influence on the ultimate bending capacity of steel pipes.It is shown that pipe considering strain hardening yields higher bending capacity than that of pipe assumed as elastic-perfectly plastic material.Thus,the ignorance of strain hardening effect,as commonly assumed in current codes,may underestimate the ultimate bending capacity of steel pipes.The solutions proposed in this paper are applicable in the design of offshore/onshore steel pipes,supports of offshore platforms and other tubular structural steel members.
Bibliography:32-1441/P
CHEN Yan-fei;ZHANG Juan;ZHANG Hong;LI Xin;ZHOU Jing;CAO Jing（ a National Engineering Laboratory for Pipeline Safety / Beijing Key Laboratory of Urban Oil and Gas Distribution Technology, China University of Petroleum, Beijing 102246, China b State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, China c HydroChina Beijing Engineering Corporation, Bering 100024, China d State Key Lab of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China e CNOOC Research Institute, Beijing 100024, China）
steel pipes; ultimate bending capacity; strain hardening; Hencky＇s total strain
Based on Hencky＇s total strain theory of plasticity,ultimate bending capacity of steel pipes can be determined analytically assuming an elastic-linear strain hardening material,the simplified analytical solution is proposed as well.Good agreement is observed when ultimate bending capacities obtained from analytical solutions are compared with experimental results from full-size tests of steel pipes.Parametric study conducted as part of this paper indicates that the strain hardening effect has significant influence on the ultimate bending capacity of steel pipes.It is shown that pipe considering strain hardening yields higher bending capacity than that of pipe assumed as elastic-perfectly plastic material.Thus,the ignorance of strain hardening effect,as commonly assumed in current codes,may underestimate the ultimate bending capacity of steel pipes.The solutions proposed in this paper are applicable in the design of offshore/onshore steel pipes,supports of offshore platforms and other tubular structural steel members.
ISSN:0890-5487
2191-8945
DOI:10.1007/s13344-016-0014-x