Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

Nonlinear behavior of the human intervertebral disc under axial load.

Authors
Kulak-RF; Belytschko-TB; Schultz-AB; Galante-JO
Source
J Biomech 1976 Jan; 9(6):377-386
NIOSHTIC No.
00057377
Abstract
The nonlinear, rate-independent behavior of human intervertebral discs is studied with a finite element model which incorporates a nonlinear elastic constitutive relation for the annulus fibrosis. The elastic coefficients and a nonlinear constitutive parameter for the annulus fibrosis were obtained by matching experimental results for the disc's load-deflection behavior. The axisymmetric finite element model includes the annulus, end plates, portions of the vertebral bodies and an incompressible nucleus pulposus. Results for annulus bulging, internal pressures, and response variations due to level-to-level changes in geometry are in agreement with available experimental data. It is shown that there are marked differences in the compressive behavior of lumbar and thoracic discs. In addition, two types of degeneration, one characterized by annular tears, the other by a desiccated nucleus, are studied.
Keywords
NIOSH-Publication; NIOSH-Grant; Spinal-column; Skeletal-system; Mechanical-properties; Elastic-properties; Elastic-deformation; Stress-strain-mechanism; Biodynamics
Contact
Materials Engineering University of Illinois Dept of Materials Engr, Bx4348 Chicago, Ill 60680
CODEN
JBMCB5
Publication Date
19760101
Document Type
Journal Article
Funding Amount
663463.00
Funding Type
Grant
Fiscal Year
1976
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-R01-OH-00514
Issue of Publication
6
ISSN
0021-9290
Source Name
Journal of Biomechanics
State
IL
Performing Organization
University of Illinois Chicago Circle, Chicago, Illinois
TOP