Results 61 to 70 of about 3,229,109 (409)
SIMULATION STUDY ON AFFECT FACTORS OF WORKOVER STRING BUCKLING IN HORIZONTAL WELL
Jixie qiangdu, 2017 Understanding the WOB and the law of tubular buckling is significant to handle workover operation efficiently and safely. Based on the simulation theory and the characteristics of workover string dynamics,a finite element model is established for the ...
LIN Wei +4 more
doaj
Twist buckling of veins under torsional loading [PDF]
Journal of Biomechanics, 2017 Veins are often subjected to torsion and twisted veins can hinder and disrupt normal blood flow but their mechanical behavior under torsion is poorly understood. The objective of this study was to investigate the twist deformation and buckling behavior of veins under torsion.
Justin R, Garcia +4 more
openaire +2 more sources
Numerical characterization of imperfection sensitive composite structures
, 2013 The need to take the imperfection sensitivity of thin-walled unstiffened cylinders into account during the early design phases motivated the development of the NASA SP-8007 guideline, which brings an empirically based lower-bound curve that gives the ...
Castro, Saullo G. P. +5 more
core +1 more source
Advanced Engineering Materials, EarlyView.Composite Ti–6Al–4V–epoxy lattice structures are additively manufactured and epoxy infiltrated for cyclic loading. At low lattice volume fractions, hybridization produces synergistic gains in stiffness and energy dissipation. At higher volume fractions, synergy diminishes, although composites still exceed metallic lattices in specific energy ...
Joey Tallon +3 more
wiley +1 more source
Buckling load of bending coiled tubing under an injector
Advances in Mechanical Engineering, 2018 When coiled tubing is applied in high oil–gas wells, buckling load of a coiled tubing under the injector is the key for functionality. The coiled tubing is curved, but it is simplified to straight tubing for buckling load solved in the past.
ZhaoLiang Zhu, Zheng Liang, Jun Hao
doaj +1 more source
, 2010 Interaction curves for vibration and buckling of thin-walled composite box beams with arbitrary lay-ups under constant axial loads and equal end moments are presented.
Lee, Jaehong, Vo, Thuc
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Advanced Functional Materials, EarlyView.Flexible piezoresistive pressure sensors underpin wearable and soft electronics. This review links sensing physics, including contact resistance modulation, quantum tunneling and percolation, to unified materials/structure design. We highlight composite and graded architectures, interfacial/porous engineering, and microstructured 3D conductive networks
Feng Luo +2 more
wiley +1 more source
Limit-point buckling analyses using solid, shell and solid–shell elements [PDF]
, 2011 In this paper, the recently-developed solid-shell element SHB8PS is used for the analysis of a representative set of popular limit-point buckling benchmark problems.
Farid Abed-Meraim +4 more
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Advanced Functional Materials, EarlyView.This paper presents a digital microfluidics‐based technique for transferring and reconfiguring soft nanomembranes. Laser‐machined nanothin membranes are picked up, transported, and aligned via tailored surface tension and the actuation of water droplets, enabling the development of flexible electronics, the integration of functional materials on 3D ...
Quang Anh Nguyen +15 more
wiley +1 more source
Lower buckling load in the non-linear buckling theory for thin shells [PDF]
Quarterly of Applied Mathematics, 1947 For thin shells the relation between the load P and the deflection e beyond the classical buckling load is very often non-linear. For instance, when a uniform thin circular cylinder is loaded in the axial direction, the load P when plotted against the end-shortening e has the characteristic shown in Fig. 1.
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