| 3D Symmetric and Asymmetric Energy Harvester Frames with Square and Rectangular Cross Sections of Legs |
| کد مقاله : 1132-ISAV |
| نویسندگان |
|
Aghil Yousefi-Koma *1، hooman kargar2، mohamadreza bahrehbar2 1مهندسی مکانیک، فنی مهندسی، استاد، دانشگاه تهران، تهران 2مرکز سیستمها و فناوریهای پیشرفته، دانشگاه تهران |
| چکیده مقاله |
| In this paper, topologies for multimodal and multidirectional energy harvesting systems are discussed in 3D symmetric skeletal frameworks with different shapes of cross section of legs. In the present study it is seen that the system can simultaneously overcome the above-mentioned challenges of unidirectionality and low-strain areas for energy harvesting based on resonances. In addition, the harvester's internal volume and end mass surfaces were capable of integrating elec-tronic components which contributed to a more compact 3D EH system. As stated in the previous paragraph, the literature indicates that using multidirectional structures instead of unidirectional beams could offer major advantages in the design of piezoelectric EHs. Many of the conflicting benefits of the skeletal frame topology are due to the 3D design of the structure inspired by struc-tural engineering systems of the construction space frame. It is also seen that the efficient high-strain areas of a symmetric frame harvester are much more than the corresponding traditional can-tilever beam for connecting piezoelectric materials as another benefit of the novel topology. Fi-nally it is shown that symmetric topology with rectangular cross section of legs are capable of behaving particularly in higher modes as multimodal EHs. Using COMSOL, the electromechani-cal responses of all EHs are collected, and the effects are seen in more details. |
| کلیدواژه ها |
| Energy Harvesting; Piezoelectric; Skeletal Frame; 3D Asymmetric Topology; Multimodal; Multidirectional. |
| وضعیت: پذیرفته شده برای ارائه شفاهی |