Results 1 to 10 of about 1,329 (165)

Analysis of sinusoidal post-buckling deformation of horizontal coiled tubing with initial residual bending. [PDF]

PLoS ONE
In the process of horizontal well construction, the working environment in the well is very complicated. It is difficult to determine the actual deformation and force of the coiled tubing in the wellbore from the load change at the wellhead along.
Zhuang Li, Liangyu Chen, Fei Yuan, Lei Zhao   +3 more
doaj   +6 more sources

Study on Sinusoidal Post-Buckling Deformation of Coiled Tubing in Horizontal Wells Based on the Separation Constant Method

Machines, 2023
In this paper, a set of partial differential equations considering the dynamic effects of the coiled tubing (CT) is established based on the bending theory of slender beams considering the axial loads.
Lei Wang, Yan Zhong
exaly   +3 more sources

An equivalent circulating density prediction model for extended-reach horizontal wells considering drill strings sinusoidal buckling [PDF]

Scientific Reports
Sinusoidal buckling of drill strings will be easily caused during drilling process of extended-reach horizontal wells due to the factors such as excessive well length and larger friction torque, which will cause measurement errors of well depth and ...
Zhao Huang, Yanfei Li, Kun Jiang, Junrui Ge, Yue Gu, Zhiqiang Hu   +5 more
doaj   +2 more sources

Room temperature molding of amorphous dielectrics via van der Waals anisotropy at the nanoscale [PDF]

Nature Communications
Mechanical instabilities produce periodic out-of-plane deformations, but applications remain limited by the need for elastic substrates and weak controllability. Here, we induce coherent, instability-driven buckling in both van der Waals (vdW) layers and
Yifeng Liu, Zhengjie Huang, Xinyan Li, Chen-yang Lin, Aryan Chugh, Tian Lang, Kenji Watanabe, Takashi Taniguchi, Jun Lou, Yanfei Gao, Yimo Han, Xuedan Ma, Hae Yeon Lee   +12 more
doaj   +2 more sources

THEORETICAL APPROACH FOR THE GEOMETRICALLY NONLINEAR BUCKLING ANALYSIS OF SINUSOIDAL VELAROIDAL SHELLS

Structural Mechanics of Engineering Constructions and Buildings, 2017
The main subjects of the article are theoretical strength and buckling analyses of a sinusoidal velaroidal shell subjected to its self-weight and uniformly distributed load in geometric nonlinearity.
MATHIEU GIL-OULBE, Svetlana Lvovna SHAMBINA, TYEKOLO DAU   +2 more
doaj   +4 more sources

A nonlocal sinusoidal shear deformation beam theory with application to bending, buckling, and vibration of nanobeams [PDF]

International Journal of Engineering Science, 2012
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Huu Thai, Thuc Vo
exaly   +2 more sources

Dynamic Buckling of Embedded Laminated Nanocomposite Plates Based on Sinusoidal Shear Deformation Theory [PDF]

Journal of Applied and Computational Mechanics, 2016
In this study, the dynamic buckling of the embedded laminated nanocomposite plates is investigated. The plates are reinforced with the single-walled carbon nanotubes (SWCNTs), and the Mori-Tanaka model is applied to obtain the equivalent material ...
Mohammd Sharif Zarei, Mohammad Hadi Hajmohammad, Ali Nouri   +2 more
doaj   +2 more sources

Machine learning models for the elastic-critical buckling moment of sinusoidal corrugated web beam

Results in Engineering
The torsional stiffness of I-beams with sinusoidal corrugated web is higher than that of flat web beams and the accuracy of the available hand-calculation methods to determine the elastic critical lateral-torsional buckling moment depends on the ...
Gábor Hajdú, Nurullah Bektaş, Andreas Müller   +2 more
doaj   +3 more sources

Elastic local shear buckling of beams with sinusoidal corrugated webs

Structures, 2023
John Papangelis
exaly   +2 more sources

A Drive–Vibration Integrated Piezoelectric Actuator for Flexible Electrode Implantation [PDF]

Micromachines
In this paper, a drive–vibration integrated piezoelectric actuator (DVIPA) is proposed for vibration-assisted implantation of flexible electrodes.
Xinhui Li, Di Wu, Xiaohui Lin, Tianyu Jiang, Jijie Ma, Ya Li, Yili Hu, Yingting Wang, Hongbo Zhong, Xinyu Yang, Jianping Li, Jianming Wen   +11 more
doaj   +2 more sources