Abstract
Liquid that resides in a soft elastomer embedded between wearable electronics and biological tissue provides a strain-isolation effect, which enhances the wearability of the electronics. One potential drawback of this design is vulnerability to structural instability, e.g., roof collapse may lead to partial closure of the liquid-filled cavities. This issue is addressed here by overfilling liquid in the cavities to prevent roof collapse. Axisymmetric models of the roof collapse are developed to establish the scaling laws for liquid-overfilled cavities, as well as for air- and liquid-filled ones. It is established that the liquid-overfilled cavities are most effective to prevent roof collapse as compared to air- and liquid-filled ones.
Original language | English (US) |
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Pages (from-to) | 137-142 |
Number of pages | 6 |
Journal | International Journal of Solids and Structures |
Volume | 117 |
DOIs | |
State | Published - Jun 15 2017 |
Keywords
- Air-filled
- Liquid-filled
- Liquid-overfilled cavities
- Roof collapse
- Strain isolation
- Wearable electronics
ASJC Scopus subject areas
- Modeling and Simulation
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Applied Mathematics