Results 231 to 240 of about 7,980,398 (271)

Collapse of thick-walled subsea pipelines with imperfections subjected to external pressure

Ocean Engineering, 2020
In this study, the collapse responses of thick-walled subsea pipelines with imperfections subjected to external pressure are studied using finite element (FE) method.
Zhang Xinhu, Guang Pan
exaly   +2 more sources

A New Analytical Model to Evaluate Uncertainty of Wellbore Collapse Pressure Based on Advantageous Synergies of Different Strength Criteria

Rock Mechanics and Rock Engineering, 2019
Yifei Yan
exaly   +2 more sources

Effect of axial length parameters of ovality on the collapse pressure of offshore pipelines

Thin-Walled Structures, 2017
Huakun Wang
exaly   +2 more sources

Prediction of the collapse pressure for thick-walled pipes under external pressure

Applied Ocean Research, 2014
Chen An
exaly   +2 more sources

Collapse pressure of sandwich pipes with strain-hardening cementitious composite - Part 1: Experiments and parametric study

, 2020
Combining both thermal insulation and structural strength in the core, sandwich pipes (SP) are a promising alternative for conventional single wall pipes in deep-water applications.
Jian-Kun Yang, C. M. Paz, S. Estefen, G. Fu, M. Lourenço   +4 more
semanticscholar   +1 more source

On the influence of interacting dual defects on the collapse pressure of pipes under external pressure

, 2020
Metal loss due to corrosion poses a severe threat to the safety of thick-walled pipe in deep-water applications. In the present study, the interaction between defects in the event of collapse under external pressure was examined.
S. Gong, Li-Bei Zhou, Xi-Peng Wang, Lin Yuan, Cheng-Bin Liu   +4 more
semanticscholar   +1 more source

Collapse pressure of sandwich pipes with strain-hardening cementitious composite - Part 2: A suitable prediction equation

, 2020
A comprehensive study on the collapse pressure and post-buckling behaviour of a sandwich pipe (SP) with a core of strain-hardening cementitious composite (SHCC) was carried out in Part 1 of two companion papers.
Jian-Kun Yang, S. Estefen, G. Fu, C. M. Paz, M. Lourenço   +4 more
semanticscholar   +1 more source

Research on the collapse pressure of an elliptical wellbore considering the effect of weak planes

Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 2020
Owing to stress concentration and anisotropy, the actual shape of a borehole is oval instead of what is usually treated – circular. In this study, a collapse pressure model for an elliptical vertical wellbore is established. The influences of ellipticity
YuLin Chen, Zhou Liu, Xu Zhang, Shiming He, D. Ma, Jun Zhou   +5 more
semanticscholar   +1 more source

A new analytical model of wellbore collapse pressure based on stability theory

, 2020
In theory, the wellbore collapse for the petroleum drilling belongs to the limit point instability, and should be treated as the stability problem, but instead of the strength problem. For this purpose, a new analytical model was established to determine
Li-Song Zhang, Menggang Jiang, Wenjie Li, Yinghui Bian   +3 more
semanticscholar   +1 more source

Three-dimensional stability analysis of the collapse pressure on flexible pavements over rectangular trapdoors

Transportation Geotechnics, 2019
A hole in a flexible pavement is commonly formed due to several environmental impacts. With a continued overload traffic action, a collapse of the hole over the flexible pavement can potentially occur resulting in a pothole on a road surface.
B. Ukritchon, Sothoan Yoang, S. Keawsawasvong   +2 more
semanticscholar   +1 more source