Results 21 to 30 of about 175,988 (236)
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
doaj +1 more source
Post-buckling behaviour of slender structures with a bi-linear bending moment-curvature relationship [PDF]
Certain classes of slender structures of complex cross-section or fabricated from specialised materials can exhibit a bi-linear bending moment–curvature relationship that has a strong influence on their global structural behaviour.
Vaz, M. A. +3 more
core +1 more source
Intraductal Tissue Sampling Device Designed for the Biliary Tract
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
doaj +1 more source
FEATURES OF CALCULATION OF UNEVEN SWELLING SCREW PILES OF OIL AND GAS PIPELINES IN FROZEN GROUND
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]
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
Flexural–torsional buckling of thin-walled composite box beams [PDF]
Buckling of an axially loaded thin-walled laminated composite is studied. A general analytical model applicable to the flexural, torsional and flexural–torsional buckling of a thin-walled composite box beam subjected to axial load is developed.
Lee, Jaehong, Vo, Thuc
core +1 more source
The Effect of General Imperfections on the Buckling of Cylindrical SheIls. [PDF]
An experimental and theoretical investigation of the effect of general imperfections on the buckling load of a circular cylindrical shell under axial compression was carried out.
Arbocz, Johann
core +1 more source
Approximation of the critical buckling factor for composite panels [PDF]
This article is concerned with the approximation of the critical buckling factor for thin composite plates. A new method to improve the approximation of this critical factor is applied based on its behavior with respect to lamination parameters and ...
Bettebghor, Dimitri, Bartoli, Nathalie
core +1 more source
Erosion Factor Analysis of Coiled Tubing with Helical Buckling
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
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

