Plastic limit loads for pipe bends under combined bending and torsion moment

J Li, CY Zhou, P Cui, XH He - International Journal of Mechanical Sciences, 2015 - Elsevier
In present paper, 3D finite element (FE) method is used to determine plastic limit load
solutions for pipe bends under combined bending and torsion moment. With a detailed …

Modeling and simulation for cross-sectional ovalization of thin-walled tubes in continuous rotary straightening process

Z Zhang - International Journal of Mechanical Sciences, 2019 - Elsevier
Cross-sectional ovalization of thin-walled circular steel tube caused by large plastic bending
usually occurs at initial large bending stage in tube's continuous rotary straightening …

Residual bending capacity for pipelines with corrosion defects

Y Chen, H Zhang, J Zhang, X Liu, X Li… - Journal of Loss Prevention …, 2014 - Elsevier
Residual bending capacity for corroded pipelines in the presence of axial force and internal
pressure can be determined analytically assuming a full plastic failure mode for the pipeline …

Cross-sectional distortion of LSAW pipes in over-bend straightening process

C Wang, Z Zhang, R Zhai, G Yu, J Zhao - Thin-Walled Structures, 2018 - Elsevier
In the over-bend straightening process of longitudinally submerged arc welding (LSAW)
pipes, the cross section tends to be distorted due to the axial curvature variation in the …

Ultimate load capacity of offshore pipeline with arbitrary shape corrosion defects

Y Chen, J Zhang, H Zhang, X Liu, X Li, J Zhou… - China Ocean …, 2015 - Springer
A set of generalized solutions are proposed for estimating ultimate load capacity of pipeline
with arbitrary corrosion shapes subjected to combined internal pressure, axial force and …

[PDF][PDF] 薄壁管材纯弯曲后截面残留扁化变形预测

张子骞, 颜云辉 - 机械工程学报, 2018 - qikan.cmes.org
针对薄壁金属管材在塑性纯弯曲后横截面扁化变形难于准确预测的难题, 运用四点纯弯曲试验,
获得截面残留扁化量的实测数据, 进而发现截面最大扁化量出现在垂直于轴向弯曲中性层的方向 …

Finite element simulation study on residual cross-sectional ovalization of thin-walled circular steel tubes in continuous rotary straightening process

Z Zhang - The International Journal of Advanced Manufacturing …, 2019 - Springer
Cross-sectional ovalization of thin-walled circular steel tube caused by large plastic bending
usually occurs at initial large bending stage in tube's continuous rotary straightening …

A FEA method for mathematical calculation and prediction analysis cross-sectional ovalization of tubes under rotary straightening

Z Zhang, Y Zhong - Journal of Physics: Conference Series, 2021 - iopscience.iop.org
The section flattening phenomenon (namely Bazier effect) will occur in the large bending
deformation stage of thin-walled pipe in the continuous straightening process. The maximum …

[PDF][PDF] 基于Bazier 效应的薄壁管材连续矫直截面变形研究

张子骞, 颜云辉, 杨会林 - 机械工程学报, 2015 - qikan.cmes.org
薄壁管材在连续矫直过程中会在大弯曲变形阶段发生截面扁化(即Bazier 效应),
最大扁化量作为重要工艺参数, 用以控制截面变形程度防止管材屈曲失稳 …

[HTML][HTML] 弯曲段套管的扁化变形及其对抗挤强度的影响

曹银萍, 窦益华, 李明飞, 索红娟 - 2019 - html.rhhz.net
受井眼构型影响, 弯曲段套管会发生塑性弯曲变形, 进而其抗外挤强度降低. 鉴于此,
基于套管变形方程, 胡克定律, Lame 理论及强度理论, 推导出考虑扁化变形后套管抗挤强度 …