نتایج جستجو برای: bracing units

تعداد نتایج: 173550  

Journal: :Thorax 1989
J D Kennedy C F Robertson I Hudson P D Phelan

The use of a corrective orthopaedic brace is an established form of management for patients with progressive idiopathic scoliosis. Thirteen patients with mild idiopathic scoliosis were studied with and without the corrective brace applied. Lung volumes and the pattern of chest wall and abdominal movement were measured during quiet breathing. Transdiaphragmatic pressures were measured in six of ...

2005
J. W. Berman M. Bruneau

This paper describes the design, testing, and finite element modeling, of a proofof-concept eccentrically braced frame specimen utilizing a hybrid rectangular shear link. The link is self-stabilizing and does not require lateral bracing, making it suitable for use in steel bridge piers where lateral bracing can be difficult to provide (building applications are possible as well). Equations used...

Journal: :مهندسی عمران فردوسی 0

the rotational friction dampers can be improved the seismic behavior of the steel structures, and they can be reduced the internal forces in the bracing members, columns and the other structural members. in this research, a simple method for modeling and analysis of braced frames equipped by these dampers is proposed. the proposed model describes seismic behavior of dampers very well and it is ...

Journal: : 2022

In this article, a Python-programmed advanced design paradigm is firstly introduced to topology and size optimization of the X-bracing system nonlinear inelastic space steel frames. For that purpose, an analysis method considering both geometric material nonlinearities utilized as effective finite element (FEA) solver. which, members are modeled by truss elements, while beam column simulated be...

M. Farhani Nezhad, N. Fanaie,

A proper composition of stiffness and ductility parameters is required to obtain a resistant and economic structure. Accordingly, Chevron Knee Braced Frame (CKBF) seems appropriate due to its proper seismic performance. The advantage of this system comes to having the capability of rapid and cheap replacement of chevron knee elements after an earthquake occurs. In this research, response modifi...

1993
Jae Young Lew Wayne J. Book

This paper proposes a hybrid positiodforce controller for flexible link manipulators that make contact with the environment at more than one point. The manipulator maintains contact at the bracing point to reduce its strucruraI vibrations, and at the same time, rhe end effector may make contact with the workpiece to perform the task. This approach requires hybrid control not only at the end eff...

2013
A. Hermanis

Abstract— In this paper a novel portable posture monitoring and feedback system is proposed. System is designed to be unobtrusively used during daily activities and provide alternative solution to traditional bracing used in treatment of scoliosis. System consists of wearable sensor network for posture data acquisition, wireless data transmission and conventional smartphone for data processing...

2015
Roberto Scotta Davide Trutalli Laura Fiorin Luca Pozza Luca Marchi Lorenzo De Stefani

The proposed light-frame structure comprises steel columns for vertical loads and an innovative bracing system to efficiently resist seismic actions. This seismic force resisting system consists of a light timber frame braced with an Oriented Strand Board (OSB) sheet and an external technoprene plaster-infilled slab. Steel brackets are used as foundation and floor connections. Experimental cycl...

Journal: :The spine journal : official journal of the North American Spine Society 2005
Piet J M van Loon Karim Raissadat Corné J M van Loon Job L C van Susante

BACKGROUND CONTEXT Pronounced kyphosis of the thoracolumbar junction is a common orthopedic problem in adolescents and may require prolonged bracing therapy or correction spondylodesis. PURPOSE To describe a case where a kyphotic deformity was related to gynecological instead of spine pathology. STUDY DESIGN Case report. METHODS A 17-year-old girl presented with a structural hyperkyphosis...

Journal: :International Journal of Science, Technology and Society 2014

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