Results 11 to 20 of about 14,651 (262)

Spatial Transverse Vibration Simulation Model of Axially Moving Sucker Rod String under the Excitation of Curved Borehole

open access: yesShock and Vibration, 2020
The mechanical model of transverse vibration of sucker rod string (SRS) in directional well is simplified to the transverse vibration model of longitudinal and transverse curved beam with initial bending under borehole constraints. In this paper, besides
Hongbo Wang, Shimin Dong
doaj   +1 more source

Structures and formation mechanism of borides with varied morphologies in cast γ-TiAl alloys

open access: yesMaterials & Design, 2023
Borides with varied morphologies and structures obtained by changing B content in as-cast Ti-45Al-2Mn-2Nb alloys are investigated. With the increase of B content, morphologies of borides change from curved to straight, and flake shape, ribbon shape ...
Ruxin Cao   +4 more
doaj   +1 more source

Jointing of thin elastic rods and generalized Kirchhoff conditions at nodes

open access: yesВестник КазНУ. Серия математика, механика, информатика, 2020
The paper presents various models of thin elastic curved rods and their joints. Such rods and their connections are important in applied research and have a long history.
B.E. Kanguzhin   +2 more
doaj   +1 more source

Tendril Perversion in Intrinsically Curved Rods

open access: yesJournal of Nonlinear Science, 2002
This article deals with an inversion of handedness, or chirality, of a thin elastic rod with a certain structure along its axial coordinate, which the authors call intrinsic curvature. The inversion is known as a perversion phenomena, e.g., of a tendril.
McMillen, T, Goriely, A
openaire   +3 more sources

Nonlinear Weakly Curved Rod by Γ-Convergence [PDF]

open access: yesJournal of Elasticity, 2011
We present a nonlinear model of weakly curved rod, namely the type of curved rod where the curvature is of the order of the diameter of the cross-section. We use the approach analogous to the one for rods and curved rods and start from the strain energy functional of three dimensional nonlinear elasticity and do not presuppose any constitutional ...
openaire   +3 more sources

Study On Normal Stresses In Composite Curved Beams Subjected To Unsymmetrical Bending

open access: yesEngineering Transactions, 2015
Based on the formula for normal stresses in curved beams of one material, the formulae for normal stresses in composite curved beams with general cross-sectional shape under complicated loads can be derived. The novel formulae presented in this paper can
Aimin Yu
doaj   +1 more source

Improved Strategy of Two-Node Curved Beam Element Based on the Same Beam’s Nodes Information

open access: yesAdvances in Materials Science and Engineering, 2021
The curved beam with a great initial curvature is the typical structure and applied widely in real engineering structures. The common practice in the current literature employs two-node straight beam elements as the elementary members for stress and ...
Yuquan Wang
doaj   +1 more source

New refined model for curved linear anisotropic rods with circular cross section

open access: yesApplications in Engineering Science, 2021
An asymptotic reduction method is introduced to construct a curved rod theory for a general anisotropic linearized elastic material. For the sake of simplicity, the cross section is assumed to be circular.
Erick Pruchnicki   +2 more
doaj   +1 more source

Lectures on Elastic Curves and Rods [PDF]

open access: yesAIP Conference Proceedings, 2008
These five lectures constitute a tutorial on the Euler elastica and the Kirchhoff elastic rod. We consider the classical variational problem in Euclidean space and its generalization to Riemannian manifolds. We describe both the Lagrangian and the Hamiltonian formulation of the rod, with the goal of examining the (Liouville‐Arnol'd) integrability.
David A. Singer   +3 more
openaire   +1 more source

Campylobacter coli bacteremia associated with diarrhea

open access: yesIDCases, 2023
Campylobacter coli (C. coli) is a gram negative, non-spore forming, mobile, curved, or spiral-shaped rod organisms and one of the most common gastrointestinal human pathogens. Campylobacter very rarely causes bacteremia.
Andres Adrianza   +6 more
doaj   +1 more source

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