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Design of Thermal Structures using Topology Optimization

Deaton, Joshua D.
http://rave.ohiolink.edu/etdc/view?acc_num=wright1401302982

Abstract Details

2014, Doctor of Philosophy (PhD), Wright State University, Engineering PhD.
The design of structures subjected to elevated temperature environments has long been an important area of study in the aerospace industry. This is especially true in the modern day, where new problems related to embedded engine aircraft and high temperature exhaust-washed structures present new structural design challenges not found in past applications. In this work, the response of a class of thermal structures whose responses are characterized by significant amounts of restrained expansion, to which exhaust-washed structures belong, are studied. To address the complex design challenges that become evident in these investigations, structural topology optimization is applied due to its unique ability to identify optimal material layout. Since conventional methods for topology optimization fail to generate effective designs in the presence of thermoelastic effects, new formulations for thermoelastic topology optimization are demonstrated. These include techniques for addressing the amount of reaction loading generated by a structural concept and methods for incorporating stress-based design criteria in topology optimization problems with design-dependent thermal loading. When taken together, the developments in this work provide a design technique in which stresses can be directly treated in thermal structures by identifying the proper arrangement of structural components in a thermal environment.
Ramana Grandhi, Ph.D. (Advisor)
Scott Thomas, Ph.D. (Committee Member)
Ha-Rok Bae, Ph.D. (Committee Member)
Jack McNamara, Ph.D. (Committee Member)
Edward Alyanak, Ph.D. (Committee Member)
232 p.
Aerospace Engineering; Mechanical Engineering
topology optimization; thermal structures; MDO; optimization; structural optimization

Recommended Citations

Citations

  • Deaton, J. D. (2014). Design of Thermal Structures using Topology Optimization [Doctoral dissertation, Wright State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=wright1401302982

    APA Style (7th edition)

  • Deaton, Joshua. Design of Thermal Structures using Topology Optimization. 2014. Wright State University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=wright1401302982.

    MLA Style (8th edition)

  • Deaton, Joshua. "Design of Thermal Structures using Topology Optimization." Doctoral dissertation, Wright State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=wright1401302982

    Chicago Manual of Style (17th edition)

wright1401302982
1,027
© 2014, some rights reserved.Creative Commons License Design of Thermal Structures using Topology Optimization by Joshua D. Deaton is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. Based on a work at etd.ohiolink.edu.
This open access ETD is published by Wright State University and OhioLINK.