نتایج جستجو برای: cyclic combined and axial loading

تعداد نتایج: 16886393  

Journal: :Journal of spinal disorders & techniques 2006
Andrew L Freeman Alihan Derincek Brian P Beaubien Glenn R Buttermann William D Lew Kirkham B Wood

Bioresorbable plates have recently been used with anterior cervical discectomy and fusion (ACDF). Compared with metallic plates, bioresorbable plates provide segmental stabilization with minimal imaging artifact, eventual resorption, and increased load sharing. The objectives of the present study were to determine whether a bioresorbable plate can withstand simulated physiologic static and cycl...

Journal: :The Journal of bone and joint surgery. American volume 2011
Robert H Brophy David Kovacevic Carl W Imhauser Mark Stasiak Asheesh Bedi Alice J S Fox Xiang-Hua Deng Scott A Rodeo

BACKGROUND Successful anterior cruciate ligament reconstruction with use of soft-tissue grafts requires healing between tendon and bone. Little is known about the effect of mechanical load on the cellular and molecular cascade of tendon-to-bone healing. Understanding these mechanical influences has critical implications for postoperative rehabilitation following anterior cruciate ligament recon...

Journal: :journal of computational & applied research in mechanical engineering (jcarme) 2013
abdolhossein fereidoon kamal kolasangiani amin akbarpour mahmoud shariati

in this paper, simulation and analysis of thin steel cylindrical shells with elliptical cutouts under oblique loading were studied using finite element method. first, the numerical results were validated by the results of experimental test performed by an instron 8802 servo hydraulic machine. also, the effect of cutout angle (θ), cutout size, cutout position (l0/l) and cutout aspect ratios (b/a...

Journal: :Geotechnique 2023

Comprehensive field investigations into the axial cyclic loading behaviour of open-steel pipe piles driven and aged in low-to-medium density chalk identify conditions under which is stable, unstable or metastable. Post-cycling monotonic tests confirmed that stable cycling enhanced pile capacity marginally, while cases suffered potentially large losses shaft capacity. Metastable led to intermedi...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده زیست شناسی 1388

126 abstract: in this research we studied the effects of cyclic hydration and dehydration of cysts of artemia urmiana and artemia parthenogenetica on the hatching percentage, survival and growth. the experiment was carried out in 3 treatments (1-3 hydration/dehydration cycles) with 3 replicates for each treatment. later effects of cold preservation at -20°c during three time periods were ...

2001
Xiangyang Lu Tasnim Hassan

A finite element scheme for simulation of welding residual stresses is presented in this paper. Detailed thermal and residual stress analyses for butt-welded and socket-welded pipes are performed using ANSYS and ABAQUS. The calculated distribution of axial stress and hoop stress at welded joint are validated against experimental results. Furthermore, residual stress relaxation under high amplit...

Javad Mosayyebi Mehran Kadkhodayan

This paper investigates the forming of sheet metal forming under cycling loading by considering the Bauschinger effect. Different proposed plasticity models which can handle this kind of deformation process have been reviewed in details. For instance, isotropic, kinematic and combined forms in the linear and non-linear cases including the well-known Yoshida and Chaboche's models have been studi...

Journal: :international journal of civil engineering 0
a. asakereh vali-asr st., mirdamad intersection, tehran s.n. moghaddas tafreshi vali-asr st., mirdamad intersection, tehran m. ghazavi vali-asr st., mirdamad intersection, tehran

this paper describes a series of laboratory model tests on strip footings supported on unreinforced and geogrid-reinforced sand with an inside void. the footing is subjected to a combination of static and cyclic loading. the influence of various parameters including the embedment depth of the void, the number of reinforcement layers, and the amplitude of cyclic load were studied. the results sh...

Journal: :Engineering Structures 2021

• Experimental investigation of full-scale SRG jacketed columns under seismic loading. Alternative jackets were used differing in textile density and number layers. jacketing modified poor response from brittle bar buckling to flexural. Sufficient displacement ductility & low strength degradation observed up 5% drift. The effectiveness steel-reinforced grout (SRG) improving the structural perfo...

Partially Encased Composite (PEC) column is one of the recent achievements in the field of composite columns. This paper presents a combined experimental and theoretical study on the mechanical performances of six octagonal PEC columns subjected to axial compressive and bending moment loading. The major different between them was the concrete reinforcement details. The parameters studied in the...

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