Results 21 to 30 of about 9,704 (210)
Materials & Design, 2022 The need for mechanical metamaterials with large strain range and lightweight properties are evidenced to engineering applications. In this regard, novel helical structures are proposed as suitable unit cell’s components of mechanical metamaterials ...
Guglielmo Cimolai +2 more
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Nonlinear dynamic intertwining of rods with self-contact [PDF]
, 2007 Twisted marine cables on the sea floor can form highly contorted three-dimensional loops that resemble tangles. Such tangles or hockles are topologically equivalent to the plectomenes that form in supercoiled DNA molecules. The dynamic evolution of these
Goyal, Sachin +2 more
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Intraductal Tissue Sampling Device Designed for the Biliary Tract
IEEE Journal of Translational Engineering in Health and Medicine, 2021 Clinical sampling of tissue that is read by a pathologist is currently the gold standard for making a disease diagnosis, but the few minimally invasive techniques available for small duct biopsies have low sensitivity, increasing the likelihood of false ...
Malay S. Patel +3 more
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FEATURES OF CALCULATION OF UNEVEN SWELLING SCREW PILES OF OIL AND GAS PIPELINES IN FROZEN GROUND
Вестник СибАДИ, 2017 The article is devoted to the problem of buckling of helical piles and deformation of the superstructure of oil and gas pipelines under the action of forces of frost heaving of soils.
V. N. Kuznetsova, M. V. Oryol
doaj +1 more source
Helical buckling in columnar assemblies of soft discotic mesogens [PDF]
Physical Review E, 2015 We investigate the emergence of chiral meso-structures in one-dimensional fluids consisting of stacked discotic particles and demonstrate that helical undulations are generated spontaneously from internal elastic stresses. The stability of these helical conformations arises from an interplay between long-ranged soft repulsions and nanopore confinement ...
Morales-Anda, L., Wensink, H. H.
openaire +3 more sources
Flow-Induced Helical Coiling of Semiflexible Polymers in Structured Microchannels [PDF]
, 2012 The conformations of semiflexible (bio)polymers are studied in flow through geometrically structured microchannels. Using mesoscale hydrodynamics simulations, we show that the polymer undergoes a rod-to-helix transition as it moves from the narrow high ...
Chelakkot, Raghunath +2 more
core +2 more sources
Erosion Factor Analysis of Coiled Tubing with Helical Buckling
Shiyou jixie, 2023 During coiled tubing(CT)operations,a wide annulus between CT and casing may lead to helical buckling and serious erosion of the CT inner wall.The inner wall erosion of CT with helical buckling was investigated through physical experiment and numerical ...
Cao Yinping +4 more
doaj
Nucleation of Multiple Buckled Structures in Intertwined DNA Double Helices [PDF]
Physical Review Letters, 2017 We study the statistical-mechanical properties of intertwined double-helical DNAs (DNA braids). In magnetic tweezers experiments we find that torsionally-stressed stretched braids supercoil via an abrupt buckling transition, which is associated with nucleation of a braid end loop, and that the buckled braid is characterized by proliferation of multiple
Brahmachari, Sumitabha +4 more
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Materials & Design, 2022 This study designs a series of helically oriented tubular structures inspired by Bouligand-type natural materials to optimize their mechanical performance.
Cheng-Che Tung +3 more
doaj +1 more source
Helical buckling of a whirling conducting rod in a uniform magnetic field
, 2012 We study the effect of a magnetic field on the behaviour of a conducting elastic rod subject to a novel set of boundary conditions that, in the case of a transversely isotropic rod, give rise to exact helical post-buckling solutions.
Antman +16 more
core +1 more source