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Theory and Application of Damping in Jointed Structures

Mathis, Allen, MATHIS
http://rave.ohiolink.edu/etdc/view?acc_num=akron1555940863603165

Abstract Details

2019, Doctor of Philosophy, University of Akron, Mechanical Engineering.
Mechanical connection of parts through jointed connections are prolific throughout modern engineering applications; however, precision analysis and design of these systems remains difficult. Experimental findings have revealed a myriad of nonlinear properties of these systems such as nonlinear damping, hysteresis, etc., and these complex effects lead to extreme difficulties in the characterization and modeling of these common structural elements. To exacerbate matters, high-fidelity numerical analysis of these systems is often impractical due to disparate length and time-scales between microslip in the joint and macro-scale effects of interest. In this dissertation, original research on the analysis of damping of jointed structures is presented. This includes theoretical work in advancement of reduced-order modal models as well as practical development of Abaqus subroutines to implement cutting-edge damping models into finite element models. This work culminates in the study of a practical problem of interest to Sandia National Labs involving a jointed structure under blast loading, and important conclusions are draw about the nature of jointed structures under complex loads.
Donald Quinn (Advisor)
Graham Kelly (Committee Member)
Xiaosheng Gao (Committee Member)
Ernian Pan (Committee Member)
Kevin Kreider (Committee Member)
305 p.
Aerospace Engineering; Applied Mathematics; Mathematics; Mechanical Engineering; Mechanics
nonlinear damping, hysteresis, friction, mechanical joints, Abaqus, asymptotic methods, method of multiple scales, reduced-order modeling

Recommended Citations

Citations

  • Mathis, MATHIS, A. (2019). Theory and Application of Damping in Jointed Structures [Doctoral dissertation, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron1555940863603165

    APA Style (7th edition)

  • Mathis, MATHIS, Allen. Theory and Application of Damping in Jointed Structures. 2019. University of Akron, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=akron1555940863603165.

    MLA Style (8th edition)

  • Mathis, MATHIS, Allen. "Theory and Application of Damping in Jointed Structures." Doctoral dissertation, University of Akron, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=akron1555940863603165

    Chicago Manual of Style (17th edition)

akron1555940863603165
387
© 2019, all rights reserved.
This open access ETD is published by University of Akron and OhioLINK.