نتایج جستجو برای: poroelastic layer

تعداد نتایج: 283853  

2017
U Lācis G A Zampogna S Bagheri

Despite the ubiquity of fluid flows interacting with porous and elastic materials, we lack a validated non-empirical macroscale method for characterizing the flow over and through a poroelastic medium. We propose a computational tool to describe such configurations by deriving and validating a continuum model for the poroelastic bed and its interface with the above free fluid. We show that, usi...

2009
Satya N. Atluri M. Galli

A novel approach is presented for the identification of constitutive parameters of linear poroelastic materials from indentation tests. Load-controlled spherical indentation with a ramp-hold creep profile is considered. The identification approach is based on the normalization of the time-displacement indentation response, in analogy to the well-known one-dimensional consolidation problem. The ...

Journal: :Mathematical medicine and biology : a journal of the IMA 2009
Benedikt Wirth Ian Sobey

This work determines the spatial and temporal distribution of cerebrospinal fluid (CSF) pressure and brain displacement during an infusion test in a spherically symmetric model of the brain. The response of CSF pressure and parenchymal displacement to blood pressure pulsations is determined in the solution. We use a spherically symmetric, three-component poroelastic model of the brain, differen...

Journal: :International Journal of Non-Linear Mechanics 2019

2017
Mohammad Haghpanahi M. Nikkhoo M. Haghpanahi J. L. Wang M. Parnianpour

Prediction of the relationship between different types of mechanical loading and the failure of the intervertebral disc is so important to identify the risk factors which are difficult to study in vivo and in vitro. On the basis of finite element methods some of these issues may be overcome enabling more detailed assessment of the biomechanical behavior of the intervertebral disc. The objective...

2018
Liping Wang Jianghui Dong Cory J Xian

Osteocytes, the major type of bone cells embedded in the bone matrix and surrounded by the lacunar and canalicular system, can serve as biomechanosensors and biomechanotranducers of the bone. Theoretical analytical methods have been employed to investigate the biomechanical responses of osteocytes in vivo; the poroelastic properties have not been taken into consideration in the three-dimensiona...

Journal: :Cement and Concrete Research 2022

In this study, we aim to gain insight into the damage mechanisms of pervious concrete subject frost attacks in presence salt. We perform numerical simulations using a poroelastic model on system geometries representing at scale one or few aggregates: (1) aggregate coated with cement paste, (2) aggregated cracked layer and (3) two aggregates bonded paste. The indicate that is more likely occur c...

Journal: :Proceedings of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences 2004

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