Mathematical model for the viscoelastic properties of dura mater.
نویسندگان
چکیده
Introduction It is becoming increasingly important to develop accurate mathematical models of human tissue for use in finite element analysis and in the development of replacement materials. For modelling the impingement of bone fragments on the spinal cord during fracture, the properties of the dura mater are required but only limited data is available. Failure stresses under tensile loading have been studied (1) and an elastic modulus at low strain determined (2) but no authors appear to have investigated the viscoelastic behaviour. The aim of this study was to investigate the time-dependent characteristics of dura in both the longitudinal and circumferential directions and to fit the data obtained to a mathematical model.
منابع مشابه
A mathematical model for the determination of viscoelastic behavior of brain in vivo. I. Oscillatory response.
In a recent experiment for determining the mechanical response of brain in vim. a probe, inserted through scalp, skull and dura, is placed in contact with and normal to the brain. given a prescribed motion, and the time variation of corresponding force is measured. In the corresponding continuum mechanical model, brain is idealized as a linear isotropic viscoelastic solid constrained by a rigid...
متن کاملMathematical Analysis of Shearing Viscoelastic Beam Subjected to Continuous Moving Load
In this paper, the dynamic response of a viscoelastic beam subjected to a moving distributed load has been studied. The viscoelastic properties of the beam have been considered as linear standard model in shear and incompressible in bulk. The stress components have been separated to the shear and dilatation components and as a result the governing equations in viscoelastic form has been obtaine...
متن کاملDesign and Fabrication of a Portable 1-DOF Robotic Device for Indentation Tests
There are many tactile devices for indentation examinations to measure mechanical properties of tissue. The purpose of this paper is to develop a portable indentation robotic device to show its usability for measuring the mechanical properties of a healthy abdominal tissue. These measurements will help to develop suitable mathematical models representing abdominal tissue. A 1-DOF portable robot...
متن کاملAge-dependence of intracranial viscoelastic properties in living rats.
To explore the effect of maturation on intracranial mechanical properties, viscoelastic parameters were determined in 44 live rats at ages 1-2, 10-12, 21, 56-70, and 180 days using instrumented indentation. With the dura mater intact, the apparent modulus of elasticity, the indentation modulus, and viscous behavior were measured in vivo, as well as 1 h after death. In a separate group of 25 rat...
متن کاملDynamic response determination of viscoelastic annular plates using FSDT – perturbation approach
In this paper, the transient response of a viscoelastic annular plate which has time-dependent properties is determined mathematically under dynamic transverse load. The axisymmetric conditions are considered in the problem. The viscoelastic properties obey the standard linear solid model in shear and the bulk behavior in elastic. The equations of motion are extracted using Hamilton’s principle...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Journal of orthopaedic science : official journal of the Japanese Orthopaedic Association
دوره 8 3 شماره
صفحات -
تاریخ انتشار 2003