نتایج جستجو برای: internal loading

تعداد نتایج: 306053  

Journal: :Journal of rehabilitation research and development 1991
S G Kabra R Narayanan

A load deflection and a cyclic loading apparatus capable of measuring dorsiflexion/plantarflexion, pronation/supination, internal/external rotation, and cyclic dorsiflexion (60 cycles per minute) of ankle-foot prostheses are described. A test protocol was developed to assess the functional parameters of the Jaipur ankle-foot prosthesis before and after prolonged cyclic loading, with the simulta...

Journal: :journal of solid mechanics 0
m jabbari mechanical engineering department, yasouj university, p.o.box: 75914-353, yasouj, iran m zamani nejad mechanical engineering department, yasouj university, p.o.box: 75914-353, yasouj, iran m ghannad mechanical engineering faculty, shahrood university, shahrood, iran

in this paper, thermo-elastic analysis of a rotating thick truncated conical shell subjected to the temperature gradient, internal pressure and external pressure is presented. given the existence of shear stress in the conical shell due to thickness change along the axial direction, the governing equations are obtained based on first-order shear deformation theory (fsdt). these equations are so...

A. Parvizi, M. Askari Sh. Ali Karami

In this paper,fluidity onset analysis in FG thick-walled spherical tanks under concurrent pressure loading and heat gradient has been presented. Designing thick-walled spherical tanks under pressure as tanks holding fluids under heat loads with high heat gradients require new approaches. Under high internal pressure and high temperature, the tank enters the plastic stage in a part of its thickn...

Journal: :journal of the structural engineering and geotechnics 0
reza nazari department of geotechnical engineering, maraghe branch, islamic azad university, maraghe, iran. rouzbeh dabiri department of civil engineering, tabriz branch, islamic azad university, tabriz, iran

one of the methods for the improvement of soil against the tensile stresses is using the artificial supplements in soil such as metal belts or nets, polymer materials and natural fibers. technically this method is called the reinforced of soil.  when a pavement is located on soft soil, great deformations can occur as a result of the crossing of traffic load in superstructure layers of the body....

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده مهندسی عمران 1391

deployable scissor type structures are composed of the so-called scissor-like elements (sles), which are connected to each other at an intermediate point through a pivotal connection and allow them to be folded into a compact bundle for storage or transport. several sles are connected to each other in order to form units with regular polygonal plan views. the sides and radii of the polygons are...

Journal: :Water research 2007
Weifang Chen Robert Parette Jiying Zou Fred S Cannon Brian A Dempsey

Iron-impregnated activated carbons have been found to be very effective in arsenic removal. Oxyanionic arsenic species such as arsenate and arsenite adsorb at the iron oxyhydroxide surface by forming complexes with the surface sites. Our goal has been to load as much iron within the carbon pores as possible while also rendering as much of the iron to be available for sorbing arsenic. Surface ox...

Journal: :Journal of dentistry 2011
Matthias J Roggendorf Norbert Krämer Andreas Appelt Michael Naumann Roland Frankenberger

OBJECTIVE This study evaluated marginal integrity of bonded posterior resin composite fillings to enamel and dentine with and without 4mm flowable base, before and after thermo-mechanical loading (TML). METHODS 80 MOD cavities with one proximal box beneath the CEJ were prepared in extracted human third molars. Direct resin composite restorations (SDR with CeramX mono, Tetric EvoCeram, Filtek ...

2001
J. Seebeck M. O. Heller G. N. Duda

Introduction Aging and osteoporosis lead to a decrease in bone density and to a reduced thickness of the cortical shell (Ritzel et al., 1997). Treatment of fractures in osteoporotic bone therefore require an adequate understanding of the internal loading conditions of the bone due to these morphological variations. Since bone formation is driven by mechanical stimulation, changes due to osteopo...

2014
F. Mirjalili L. Chuah E. Salahi

A nanocomposite containing polypropylene (PP) and nano α-Al2O3 particles was prepared using a Haake internal mixer. Mechanical tests, such as tensile and flexural tests, showed that mechanical properties of the composite were enhanced by addition of nano α-Al2O3 particles and dispersant agent to the polymer. Tensile strength was approximately ∼ 16% higher than pure PP by increasing the nano α-A...

2005
Speirs Heller georg. duda

INTRODUCTION Short-stemmed hip implants have been introduced in order to conserve proximal bone mass and could facilitate the use of minimally invasive surgery (MIS), in which smaller incisions limit access to the hip joint. MIS techniques have been associated with faster rehabilitation, reduced peri-operative blood loss and less post-operative pain [1]. The limited access during MIS may increa...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید