Study of a spherical head model. Analytical and numerical solutions in fluid-structure interaction approach

被引:9
作者
El Baroudi, Adil [1 ]
Razafimahery, Fulgence [2 ]
Rakotomanana-Ravelonarivo, Lalaonirina [2 ]
机构
[1] Belfort Montbliard Univ Technol, Lab M3M, F-90010 Belfort, France
[2] Univ Rennes 1, Mech Grp, IRMAR, F-35042 Rennes, France
关键词
Fluid-structure interaction; Modal analysis; Confinement study; Finite element method; SIMULATION; VIBRATION; CRITERIA; SYSTEMS; IMPACT;
D O I
10.1016/j.ijengsci.2011.11.007
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
This paper deals with the analytical and the numerical computation of elastoacoustic vibration modes. We determine in the present study the eigenfrequencies and the modal shapes of the system of brain, cerebro-spinal fluid (CSF) and skull. Two models are presented in this work: an elastic-acoustic model assuming a rigid skull and an elastic-acoustic-elastic model assuming a deformable skull. The analytical results are compared with the numerical solution obtained using the software Comsol Multiphysics. It is shown that eigenfrequencies and more significantly the modal shapes are strongly influenced by the interaction between solid phases (brain and skull) and the cerebro-spinal fluid. Finally the influence of the CSF compressibility and thickness on the natural frequencies was investigated. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1 / 13
页数:13
相关论文
共 20 条
[1]  
Abramowitz M., 1970, HDB MATH FUNCTIONS
[2]   FINITE-ELEMENT VIBRATION ANALYSIS OF FLUID-SOLID SYSTEMS WITHOUT SPURIOUS MODES [J].
BERMUDEZ, A ;
DURAN, R ;
MUSCHIETTI, MA ;
RODRIGUEZ, R ;
SOLOMIN, J .
SIAM JOURNAL ON NUMERICAL ANALYSIS, 1995, 32 (04) :1280-1295
[3]   Frequency spectrum of the human head-neck system [J].
Charalambopoulos, A ;
Dassios, G ;
Fotiadis, DI ;
Massalas, CV .
INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE, 1997, 35 (08) :753-768
[4]   Computational simulation of the human head response to non-contact impact [J].
Gong, S. W. ;
Lee, H. P. ;
Lu, C. .
COMPUTERS & STRUCTURES, 2008, 86 (7-8) :758-770
[5]  
Hault-Dubrulle A., 2007, THESIS U VALENCIENNE
[6]   Quantification of mechanical vibration during diffusion tensor imaging at 3 T [J].
Hiltunen, Jaana ;
Hari, Riitta ;
Jousmaki, Veikko ;
Muller, Kiti ;
Sepponen, Raimo ;
Joensuu, Raimo .
NEUROIMAGE, 2006, 32 (01) :93-103
[7]   Can sulci protect the brain from traumatic injury? [J].
Ho, Johnson ;
Kleiven, Svein .
JOURNAL OF BIOMECHANICS, 2009, 42 (13) :2074-2080
[8]  
Kleiven S., 2002, THESIS ROYAL I TECHN
[9]   Head injury prediction capability of the HIC, HIP, SIMon and ULP criteria [J].
Marjoux, Daniel ;
Baumgartner, Daniel ;
Deck, Caroline ;
Willinger, Remy .
ACCIDENT ANALYSIS AND PREVENTION, 2008, 40 (03) :1135-1148
[10]   SUBSTRUCTURE VARIATIONAL ANALYSIS OF THE VIBRATIONS OF COUPLED FLUID STRUCTURE SYSTEMS - FINITE-ELEMENT RESULTS [J].
MORAND, H ;
OHAYON, R .
INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING, 1979, 14 (05) :741-755