DYNAMIC ANALYSIS OF POROUS MEDIUM PROBLEMS BY THE FINITE ELEMENT METHODS.

Persistent Link:
http://hdl.handle.net/10150/187668
Title:
DYNAMIC ANALYSIS OF POROUS MEDIUM PROBLEMS BY THE FINITE ELEMENT METHODS.
Author:
WU, JAMES SHIH-SHYN.
Issue Date:
1984
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
General anisotropic constitutive laws and relevant dynamic equations of motion for porous media are described. The accuracy of various discretization algorithms in space and in time was surveyed. Results of these models and algorithms were compared to the exact solutions. Appropriate models and algorithms for further studies of spinal motion segments were then determined. Poroelastic axisymmetric finite element models, simulating spinal motion segments were analyzed and studied. Material properties of the intervertebral disc were derived by fitting experimental data based on porous medium theory using one-dimensional mathematical models. Structural models for the normal and degenerative processes were simulated for investigation of nutritional supply routes in the disc. Detailed structural anaalyses and failure conditions in various spinal motion segments were studied. Results of finite element analyses were consistent with the experimental observations. Nonlinear elastic material behavior of the solid skeleton was assumed and relevant formulas in creep were derived and examined. Preliminary results indicated that the nonlinear poroelastic material law used here may be useful in future analysis of the disc in finite element models of spinal motion segments.
Type:
text; Dissertation-Reproduction (electronic)
Keywords:
Materials -- Dynamic testing.; Finite element method.; Porous materials -- Analysis.
Degree Name:
Ph.D.
Degree Level:
doctoral
Degree Program:
Aerospace and Mechanical Engineering; Graduate College
Degree Grantor:
University of Arizona
Advisor:
Simon, Bruce R.

Full metadata record

DC FieldValue Language
dc.language.isoenen_US
dc.titleDYNAMIC ANALYSIS OF POROUS MEDIUM PROBLEMS BY THE FINITE ELEMENT METHODS.en_US
dc.creatorWU, JAMES SHIH-SHYN.en_US
dc.contributor.authorWU, JAMES SHIH-SHYN.en_US
dc.date.issued1984en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractGeneral anisotropic constitutive laws and relevant dynamic equations of motion for porous media are described. The accuracy of various discretization algorithms in space and in time was surveyed. Results of these models and algorithms were compared to the exact solutions. Appropriate models and algorithms for further studies of spinal motion segments were then determined. Poroelastic axisymmetric finite element models, simulating spinal motion segments were analyzed and studied. Material properties of the intervertebral disc were derived by fitting experimental data based on porous medium theory using one-dimensional mathematical models. Structural models for the normal and degenerative processes were simulated for investigation of nutritional supply routes in the disc. Detailed structural anaalyses and failure conditions in various spinal motion segments were studied. Results of finite element analyses were consistent with the experimental observations. Nonlinear elastic material behavior of the solid skeleton was assumed and relevant formulas in creep were derived and examined. Preliminary results indicated that the nonlinear poroelastic material law used here may be useful in future analysis of the disc in finite element models of spinal motion segments.en_US
dc.typetexten_US
dc.typeDissertation-Reproduction (electronic)en_US
dc.subjectMaterials -- Dynamic testing.en_US
dc.subjectFinite element method.en_US
dc.subjectPorous materials -- Analysis.en_US
thesis.degree.namePh.D.en_US
thesis.degree.leveldoctoralen_US
thesis.degree.disciplineAerospace and Mechanical Engineeringen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorSimon, Bruce R.en_US
dc.contributor.committeememberDaDeppo, D.en_US
dc.contributor.committeememberDesai, C. S.en_US
dc.contributor.committeememberGallagher, R. H.en_US
dc.contributor.committeememberKamel, H. A.en_US
dc.identifier.proquest8412684en_US
dc.identifier.oclc690944319en_US
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