Results 1 to 10 of about 12,440 (198)

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

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

Axial-flexural coupled vibration and buckling of composite beams using sinusoidal shear deformation theory [PDF]

Archive of Applied Mechanics, 2013
A finite element model based on sinusoidal shear deformation theory is developed to study vibration and buckling analysis of composite beams with arbitrary lay-ups.
A.A. Khdeir, A.A. Khdeir, Fawad Inam, G. Shi, H. Matsunaga, Huu-Tai Thai, J.N. Reddy, K. Chandrashekhara, K. Soldatos, L. Jun, L. Jun, L. Jun, M. Aydogdu, M. Aydogdu, M. Aydogdu, M. Karama, M. Karama, M. Touratier, M.V.V.S. Murthy, P. Subramanian, P. Vidal, P. Vidal, R.M. Jones, S.J. Song, S.R. Marur, S.R. Marur, S.R. Marur, T. Kant, T.P. Vo, Thuc P. Vo, W. Zhen, W.Q. Chen   +31 more
core   +4 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

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

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

Mechanical fatigue in microtubules [PDF]

Scientific Reports
Mechanical failure of biological nanostructures due to sustained force application has been studied in great detail. In contrast, fatigue failure arising from repeated application of subcritical stresses has received little attention despite its ...
Syeda Rubaiya Nasrin, Neda M. Bassir Kazeruni, Juan B. Rodriguez, Stanislav Tsitkov, Akira Kakugo, Henry Hess   +5 more
doaj   +2 more sources

Buckling and Vibration Analysis of a Double-layer Graphene ‎Sheet Coupled with a Piezoelectric Nanoplate [PDF]

Journal of Applied and Computational Mechanics, 2022
In this article, the vibration and buckling of a double-layer Graphene sheet (DLGS) coupled with a piezoelectric nanoplate through an elastic medium (Pasternak and Winkler models) are investigated.
Keramat Malekzadeh Fard, Mehdi Khajehdehi Kavanroodi, Hosein Malek-Mohammadi, Ali Pourmoayed   +3 more
doaj   +1 more source

Bending and Buckling Analysis of a Nth-Order Shear Deformation Nanoplate using Modified Couple Stress Theory [PDF]

International Journal of Advanced Design and Manufacturing Technology, 2021
In this paper a Nth order nanoplate model is developed for the bending and buckling analysis of a graphene nanoplate based on a modified couple stress theory. The strain energy, external work and buckling equations are solved.
Majid Eskandari shahraki, mahmoud shariati, naser asiaban   +2 more
doaj   +1 more source

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.
Zhuang Li, Liangyu Chen, Yan Zhong, Lei Wang   +3 more
doaj   +1 more source