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JamesChristopherThesis2.pdf (1.65 MB)
ETD Abstract Container
Abstract Header
AN ANISOTROPIC CONSTITUTIVE MODEL FOR NUCLEAR GRADE GRAPHITE
Author Info
James, Christopher, James
ORCID® Identifier
http://orcid.org/0000-0001-5071-7438
Permalink:
http://rave.ohiolink.edu/etdc/view?acc_num=csu1544027689571583
Abstract Details
Year and Degree
2018, Doctor of Engineering, Cleveland State University, Washkewicz College of Engineering.
Abstract
Graphite material is used extensively in nuclear reactors however the material has a limited strain range for elastic behavior. This provides the motivation to derive a constitutive model that captures the inelastic deformations exhibited by this material. This dissertation first presents details of an isotropic constitutive model derived using continuum principles of engineering mechanics that accounts for different inelastic behavior in tension and compression. An inelastic dissipation function was developed using an integrity basis proposed by Green and Mkrtichian (1977) for the isotropic version of the model. This isotropic model was then extended to capture anisotropic stress-strain behavior using directional tensors associated with the material symmetry. In the case of anisotropic graphite the material typically exhibits transversely isotropic behavior. The model parameters were characterized using stress-strain data from several grades of nuclear graphite. Once the model parameter were characterized several benchmark structural components were analyzed with the intent of showing that the model's predictive capability relative to simple component level behavior.
Committee
Stephen Duffy, Ph. D. (Advisor)
Jason Halloran, Ph. D. (Committee Member)
Antonie van den Bogert, Ph. D. (Committee Member)
Jerzy Sawicki, Ph. D. (Committee Member)
Ulrich Zurcher, Ph. D. (Committee Member)
Pages
191 p.
Subject Headings
Mechanical Engineering
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Citations
James, James, C. (2018).
AN ANISOTROPIC CONSTITUTIVE MODEL FOR NUCLEAR GRADE GRAPHITE
[Doctoral dissertation, Cleveland State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=csu1544027689571583
APA Style (7th edition)
James, James, Christopher.
AN ANISOTROPIC CONSTITUTIVE MODEL FOR NUCLEAR GRADE GRAPHITE.
2018. Cleveland State University, Doctoral dissertation.
OhioLINK Electronic Theses and Dissertations Center
, http://rave.ohiolink.edu/etdc/view?acc_num=csu1544027689571583.
MLA Style (8th edition)
James, James, Christopher. "AN ANISOTROPIC CONSTITUTIVE MODEL FOR NUCLEAR GRADE GRAPHITE." Doctoral dissertation, Cleveland State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=csu1544027689571583
Chicago Manual of Style (17th edition)
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Document number:
csu1544027689571583
Download Count:
219
Copyright Info
© 2018, some rights reserved.
AN ANISOTROPIC CONSTITUTIVE MODEL FOR NUCLEAR GRADE GRAPHITE by Christopher James James is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. Based on a work at etd.ohiolink.edu.
This open access ETD is published by Cleveland State University and OhioLINK.