Results 11 to 20 of about 26,446 (263)

AUTOMATION OF LENSES CENTERING AT GLUING IN THE FRAME [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2015
This paper discusses the causes of lenses decentration at their gluing in the frame. We give the dependences of displacement value of the centers of curvature for the lens working surfaces from the base frame axis on the primary technological errors of ...
B. D. Bao, S. M. Latyev, R. Theska
doaj   +1 more source

Seismic Design Coefficients of Self-Centering Multiple Rocking Walls Subjected to Effect of Far and Near-Field Earthquakes [PDF]

open access: yesپژوهش‌های زیرساخت‌های عمرانی, 2021
Nowadays, new and innovative methods have been proposed based on damage avoidance design (DAD) philosophy systems as the alternative conventional lateral load-resistant systems.
Esmaeil Mohammadi Dehcheshmeh   +1 more
doaj   +1 more source

Proposal for seismic design coefficients for rocking steel braced frame [PDF]

open access: yesJournal of Structural and Construction Engineering, 2019
Rocking steel braced frames are capable of reducing seismic damage through directing damage in energy dissipation elements. This paper quantifies seismic design factors for the controlled rocking self-centering braced frame including response ...
Navid Rahgozar, Abdolreza S Moghadam
doaj   +1 more source

Mechanical Behaviors of a Buckling-Plate Self-Centering Friction Damper

open access: yesBuildings, 2023
In order to improve the resilience of structures subjected to strong earthquakes, a buckling-plate self-centering friction damper (BPSCFD) with low post-yielding stiffness is proposed, which consists of a group of post-buckling plates and a self ...
Qinting Wang   +3 more
doaj   +1 more source

Optimization of a Novel Nano Antenna With Two Radiation Modes Using Kriging Surrogate Models

open access: yesIEEE Photonics Journal, 2018
In this paper, a novel nano antenna with two radiation modes is introduced. The structure of this nano antenna consists of a ring coupler and two patch antennas placed on a SiO2 substrate.
Abdel-Karim S.O. Hassan   +2 more
doaj   +1 more source

APPROACH TO AUTOMATION OF LENS COMPONENTS CENTERING FOR ASSEMBLING OF DIFFERENT DESIGN OBJECTIVES [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2016
Subject of Research.Existing adjustment methods of lens objectives in two mechanical designs have been analyzed, the main ways of centering error compensation have been considered.
A. Y. Pimenov
doaj   +1 more source

Seismic Response and Evaluation of SDOF Self-Centering Friction Damping Braces Subjected to Several Earthquake Ground Motions

open access: yesAdvances in Materials Science and Engineering, 2015
This paper mainly deals with seismic response and performance for self-centering friction damping braces (SFDBs) subjected to several maximum- or design-leveled earthquake ground motions.
Jong Wan Hu, Myung-Hyun Noh
doaj   +1 more source

Seismic design of low-rise steel building frames with self-centering hybrid damping connections

open access: yesResilient Cities and Structures, 2022
This paper develops a practice-oriented seismic design procedure for an emerging lateral force resisting system. The system combines the favorable re-centering feature with the attractive hybrid damping capacity.
Junlin Li, Wei Wang
doaj   +1 more source

Earthquake resilient coupling beams: a state-of-the-art review

open access: yesShenzhen Daxue xuebao. Ligong ban, 2022
Coupling beams are significant members to dissipate energy in shear wall structures among which the earthquake resilient coupling beam possesses such advantages as good capacity of energy dissipation, effectiveness of reducing the inter-story drift and ...
GUAN Minsheng, LI Zhenying, DU Hongbiao
doaj   +1 more source

Evaluation of Pressure Distribution against Root Canal Walls of NiTi Rotary Instruments by Finite Element Analysis

open access: yesApplied Sciences, 2020
The aim of this study was to evaluate the contact pressure distribution of two different nickel-titanium (NiTi) endodontic rotary instruments against the root canal walls and to virtually predict their centering ability during shaping with finite element
Giorgia Carpegna   +9 more
doaj   +1 more source

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