Results 1 to 10 of about 315 (211)

Natural and forsed osculations of pipelines in contact with the Wincler medium [PDF]

open access: yesE3S Web of Conferences, 2023
In this paper, the pipeline is modeled as a curved rod in contact with the Winkler medium. Linear oscillations of a curved viscoelastic rod lying on the Winkler base are considered.
Safarov I I   +4 more
doaj   +1 more source

Dynamic instability of vibrations of thin-wall composite curvorine viscoelastic tubes under the influence of pulse pressure [PDF]

open access: yesE3S Web of Conferences, 2020
In this paper the results of a study of the dynamic characteristics of thin-walled composite curved viscoelastic pipes under the influence of internal pulsating pressures is presented. The relationship between stress and strain is described by the Aviary
Mirsaidov Mirziyod   +2 more
doaj   +1 more source

Statics and dynamics of curved rods based on Bernoulli hypotheses and relations for a rectilinear rod

open access: yesStructural Mechanics of Engineering Constructions and Buildings, 2023
Method for calculating the statics and dynamics of curved rods, based on the equations for a rectilinear rod, is described and justified in detail. Bernoulli's hypotheses and the variational method are applied.
Murat N. Serazutdinov
doaj   +1 more source

Theoretical Analysis of Thin Curved Rod Displacements

open access: yesНаука и техника, 2021
The paper presents a comparative theoretical analysis of the movements of the curved rods of various curvature forms, which can be applied as tools for ultrasonic treatment of holes in fragile materials.
V. P. Lugovoi
doaj   +1 more source

Improving the Efficiency of Curved Wells’ Operation by Means of Progressive Cavity Pumps

open access: yesEnergies, 2022
This paper proposes a solution to the problem of improving the reliability of the operation of progressive cavity pump units in deviated and directional wells. High dogleg severity significantly contributes to rod breakage; rods often break close to the “
Anatoliy Andreevich Isaev   +4 more
doaj   +1 more source

Asymmetric peptidoglycan editing generates cell curvature in Bdellovibrio predatory bacteria

open access: yesNature Communications, 2022
Cells of the predatory bacterium Bdellovibrio bacteriovorus, which invades and replicates within the periplasm of other bacteria, have a characteristic curved rod shape. Here, Banks et al.
Emma J. Banks   +8 more
doaj   +1 more source

Design of an esophageal deflection device for use during atrial ablation procedures

open access: yesJournal of Materials Research and Technology, 2020
To prevent thermal damage of the esophagus during cardiac ablation surgery, a new device, named the esophageal deflection device (EDD), has been designed.
Karcher Morris   +2 more
doaj   +1 more source

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

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

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

Home - About - Disclaimer - Privacy