نتایج جستجو برای: rigid walls

تعداد نتایج: 78909  

2012

Rammed Earth (RE) is enjoying a renewed interest in North America. Contemporary stabilized rammed earth (SRE) builds upon traditional RE and incorporates rigid insulation and reinforcing steel, enhancing the structural and energy performance of the walls while satisfying current building codes. RE structures are currently engineered by licensed Structural Engineers using the Concrete Building C...

2012
Paritosh Vasava Payman Jalali Mahsa Dabagh Pertti J. Kolari

A three-dimensional computer model of human aortic arch with three branches is reproduced to study the pulsatile blood flow with Finite Element Method. In specific, the focus is on variation of wall shear stress, which plays an important role in the localization and development of atherosclerotic plaques. Pulsatile pressure pulse is used as boundary condition to avoid flow entry development, an...

Journal: :Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention 2006
Laura Dempere-Marco Estanislao Oubel Marcelo Adrián Castro Christopher M. Putman Alejandro F. Frangi Juan R. Cebral

Haemodynamics, and in particular wall shear stress, is thought to play a critical role in the progression and rupture of intracranial aneurysms. A novel method is presented that combines image-based wall motion estimation obtained through non-rigid registration with computational fluid dynamics (CFD) simulations in order to provide realistic intra-aneurysmal flow patterns and understand the eff...

Journal: :journal of biomedical physics and engineering 0
z. mortazavinia department of mechanical engineering, écolepolytechnique de montréal, montreal, canada e. goshtasbi rad school of mechanical engineering, shiraz university, shiraz, iran h. emdad school of mechanical engineering, shiraz university, shiraz, iran m. b. sharifkazemi shiraz medical school, shiraz university of medical science, shiraz, iran a. zare department of mechanical engineering, islamic azad university, shiraz branch, member of young researchers club, shiraz, iran a. r. mehdizadeh center for research in medical physics and engineering, school of medicine, shiraz university of medical science, shiraz, iran

background: the interaction between the blood and the vessel wall is of great clinical interest in studying cardiovascular diseases, the major causes of death in developed countries. objective: to understand the effects of incorporating fluid-structure interaction into the simulation of blood flow through an anatomically realistic model of abdominal aorta and renal arteries reconstructed from c...

Journal: :Structures 2021

In this work, a simple and effective Rigid Beam Model recently introduced for studying the dynamic behaviour of ancient freestanding stone columns is extended to case cantilever unreinforced masonry walls, considered along their thickness subjected out-of-plane loading. Both monolithic multi-block walls were investigated. The proposed model assumes each block wall as rigid beam element interfac...

Granular materials have a tendency to exhibit an arching effect by which the load is transferred from yielding parts to adjacent stationary parts. Retaining walls are among those structures that the soil arching plays an important role in the distribution of earth pressures. This paper briefly reviews the development of soil arching theory and its application to different geotechnical projects....

A. R. Mehdizadeh A. Zare E. Goshtasbi Rad H. Emdad M. B. Sharifkazemi Z. Mortazavinia,

Background: The interaction between the blood and the vessel wall is of great clinical interest in studying cardiovascular diseases, the major causes of death in developed countries.Objective: To understand the effects of incorporating fluid-structure interaction into the simulation of blood flow through an anatomically realistic model of abdominal aorta and renal arteries reconstructed from CT...

Journal: :Canadian Geotechnical Journal 2021

The study on impact mechanisms of flow-like landslides against structures is still an open issue in the scientific literature. Many researchers have so far employed either experiments or numerical methods, but evaluation forces mitigation obstacles remains difficult especially if solid–fluid interaction within flow considered. This shows how advanced tools, such as material point method, may be...

2013
Falk-Ulrich Stein Lars Bocklage Markus Weigand Guido Meier

In ferromagnetic nanostructures domain walls as emergent entities separate uniformly magnetized regions. They are describable as quasi particles and can be controlled by magnetic fields or spin-polarized currents. Below critical driving forces domain walls are rigid conserving their spin structure. Like other quasi particles internal excitations influence the domain wall dynamics above a critic...

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