0

Full Content is available to subscribers

Subscribe/Learn More  >

Improving Durability of a Vibration Energy Harvester Using Structural Design Optimization

[+] Author Affiliations
Saman Nezami, Soobum Lee

University of Maryland at Baltimore County, Baltimore, MD

Kiweon Kang

Kunsan National University, Kunsan, Korea

Jaehoon Kim

Korean Railroad Research Institute, Uiwang-si, Korea

Paper No. SMASIS2016-9301, pp. V002T07A018; 7 pages
doi:10.1115/SMASIS2016-9301
From:
  • ASME 2016 Conference on Smart Materials, Adaptive Structures and Intelligent Systems
  • Volume 2: Modeling, Simulation and Control; Bio-Inspired Smart Materials and Systems; Energy Harvesting
  • Stowe, Vermont, USA, September 28–30, 2016
  • Conference Sponsors: Aerospace Division
  • ISBN: 978-0-7918-5049-7
  • Copyright © 2016 by ASME

abstract

This paper presents design optimization of an electromagnetic vibration energy harvester to improve durability and increase life cycle. The energy harvester discussed in this paper has been developed by the Korean Railroad Research Institute, as a maintenance-free power supply for a wireless sensor module that monitors rail bogie axles and bearings. Our research team realized a durability issue in the leaf spring in this harvester because of high stress concentration and the corresponding fatigue failure when the harvester experiences high impact loading in rail operation. The topology optimization method has been applied in this research to design the shape of the leaf spring with a lower stress concentration magnitude while satisfying the multiple functional requirements on vibration amplitude and natural frequency. For fast and effective design search, we firstly identified several initial models from literature. These models have been carefully chosen to minimize any unnecessary parasitic motions. The topology optimization is then applied to produce the new leaf spring structure. The results of this research showed that topology optimization method could reduce the magnitude of stress concentration while satisfying required vibration amplitude and natural frequency of the spring structure.

Copyright © 2016 by ASME

Figures

Tables

Interactive Graphics

Video

Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In