Dissipation of Elastic Wave Energy in Granular Soils

1964 ◽  
Vol 90 (4) ◽  
pp. 195-197
Author(s):  
B.O. Hardin ◽  
H.A.B. Rao
Keyword(s):  
Elastic Wave ◽  
Wave Energy ◽  
Granular Soils ◽  
Elastic Wave Energy

scholarly journals A Phononic Crystal with Differently Configured Double Defects for Broadband Elastic Wave Energy Localization and Harvesting

Crystals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 643
Author(s):  
Soo-Ho Jo ◽  
Byeng D. Youn
Keyword(s):  
Elastic Wave ◽  
Wave Energy ◽  
Phononic Crystal ◽  
Square Lattice ◽  
Energy Localization ◽  
Piezoelectric Patch ◽  
Single Defect ◽  
Piezoelectric Energy ◽  
Piezoelectric Effects ◽  
Elastic Wave Energy

Several previous studies have been dedicated to incorporating double defect modes of a phononic crystal (PnC) into piezoelectric energy harvesting (PEH) systems to broaden the bandwidth. However, these prior studies are limited to examining an identical configuration of the double defects. Therefore, this paper aims to propose a new design concept for PnCs that examines differently configured double defects for broadband elastic wave energy localization and harvesting. For example, a square-pillar-type unit cell is considered and a defect is considered to be a structure where one piezoelectric patch is bonded to a host square lattice in the absence of a pillar. When the double defects introduced in a PnC are sufficiently distant from each other to implement decoupling behaviors, each defect oscillates like a single independent defect. Here, by differentiating the geometric dimensions of two piezoelectric patches, the defects’ dissimilar equivalent inertia and stiffness contribute to individually manipulating defect bands that correspond to each defect. Hence, with adequately designed piezoelectric patches that consider both the piezoelectric effects on shift patterns of defect bands and the characteristics for the output electric power obtained from a single-defect case, we can successfully localize and harvest the elastic wave energy transferred in broadband frequencies.

Elastic Wave Energy Entrapment for Reflectionless Metasurface

2020 ◽  
Vol 13 (5) ◽  
Author(s):  
Min Soo Kim ◽  
Woorim Lee ◽  
Chung Il Park ◽  
Joo Hwan Oh
Keyword(s):  
Elastic Wave ◽  
Wave Energy ◽  
Elastic Wave Energy

Enhanced energy transfer and conversion for high performance phononic crystal-assisted elastic wave energy harvesting

Nano Energy ◽  
2020 ◽  
Vol 78 ◽  
pp. 105226 ◽  
Author(s):  
Tae-Gon Lee ◽  
Soo-Ho Jo ◽  
Hong Min Seung ◽  
Sun-Woo Kim ◽  
Eun-Ji Kim ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Energy Harvesting ◽  
Elastic Wave ◽  
Wave Energy ◽  
High Performance ◽  
Phononic Crystal ◽  
Elastic Wave Energy

On the concentration of elastic wave energy in conical rods

1970 ◽  
Vol 6 (7) ◽  
pp. 798-800
Author(s):  
P. V. Ponomarev ◽  
N. S. Smirnykh
Keyword(s):  
Elastic Wave ◽  
Wave Energy ◽  
Elastic Wave Energy
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