Single-degree-of-freedom energy harvesters by stochastic excitation
Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2014.
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| Format: | Thesis |
| Language: | eng |
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Massachusetts Institute of Technology
2014
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| Online Access: | http://hdl.handle.net/1721.1/92138 |
| _version_ | 1826203730393956352 |
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| author | Joo, Han Kyul |
| author2 | Themistoklis P. Sapsis. |
| author_facet | Themistoklis P. Sapsis. Joo, Han Kyul |
| author_sort | Joo, Han Kyul |
| collection | MIT |
| description | Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2014. |
| first_indexed | 2024-09-23T12:42:27Z |
| format | Thesis |
| id | mit-1721.1/92138 |
| institution | Massachusetts Institute of Technology |
| language | eng |
| last_indexed | 2024-09-23T12:42:27Z |
| publishDate | 2014 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/921382019-04-12T07:29:04Z Single-degree-of-freedom energy harvesters by stochastic excitation Joo, Han Kyul Themistoklis P. Sapsis. Massachusetts Institute of Technology. Department of Mechanical Engineering. Massachusetts Institute of Technology. Department of Mechanical Engineering. Mechanical Engineering. Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2014. Cataloged from PDF version of thesis. Includes bibliographical references (pages 97-100). In this thesis, the performance criteria for the objective comparison of different classes of single-degree-of-freedom oscillators under stochastic excitation are developed. For each family of oscillators, these objective criteria take into account the maximum possible energy harvested for a given response level, which is a quantity that is directly connected to the size of the harvesting configuration. We prove that the derived criteria are invariant with respect to magnitude or temporal rescaling of the input spectrum and they depend only on the relative distribution of energy across different harmonics of the excitation. We then compare three different classes of linear and nonlinear oscillators and using stochastic analysis tools we illustrate that in all cases of excitation spectra (monochromatic, broadband, white-noise) the optimal performance of all designs cannot exceed the performance of the linear design. Subsequently, we study the robustness of this optimal performance to small perturbations of the input spectrum and illustrate the advantages of nonlinear designs relative to linear ones. by Han Kyul Joo. S.M. 2014-12-08T18:51:32Z 2014-12-08T18:51:32Z 2014 2014 Thesis http://hdl.handle.net/1721.1/92138 896173724 eng M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582 100 pages application/pdf Massachusetts Institute of Technology |
| spellingShingle | Mechanical Engineering. Joo, Han Kyul Single-degree-of-freedom energy harvesters by stochastic excitation |
| title | Single-degree-of-freedom energy harvesters by stochastic excitation |
| title_full | Single-degree-of-freedom energy harvesters by stochastic excitation |
| title_fullStr | Single-degree-of-freedom energy harvesters by stochastic excitation |
| title_full_unstemmed | Single-degree-of-freedom energy harvesters by stochastic excitation |
| title_short | Single-degree-of-freedom energy harvesters by stochastic excitation |
| title_sort | single degree of freedom energy harvesters by stochastic excitation |
| topic | Mechanical Engineering. |
| url | http://hdl.handle.net/1721.1/92138 |
| work_keys_str_mv | AT joohankyul singledegreeoffreedomenergyharvestersbystochasticexcitation |