Design and numerical simulations of seismic metamaterials with broad-band gap
碩士 === 國立成功大學 === 土木工程學系 === 106 === Because of the shock absorption by the seismic metamaterials, many scholars have begun to study in this field and explore the physical insights in recent years. In order to design seismic metamaterials that are able to a block broad band gap of seismic waves, the...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2018
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| Online Access: | http://ndltd.ncl.edu.tw/handle/9rq5gj |
| Summary: | 碩士 === 國立成功大學 === 土木工程學系 === 106 === Because of the shock absorption by the seismic metamaterials, many scholars have begun to study in this field and explore the physical insights in recent years. In order to design seismic metamaterials that are able to a block broad band gap of seismic waves, the spring-mass system is first used to analyze the unit structure model composed of different material layers and arrangements, and then a suitable model for blocking low-frequency waves is proposed. Referring to the results from the spring-mass system, we build up a continuum model and simulate the behavior by finite element analysis. The influence and trend of the stop frequency range are observed versus a variety of the parameters with the real materials. Seismic metamaterials are then designed that are composed of several unit structures with different band gap frequency range, and we can verify the effects of broad-band gap by the resonance behaviors in seismic metamaterials with broad-band gap.
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