التفاصيل البيبلوغرافية
| العنوان: |
Study on bandgap characteristics and vibration attenuation mechanism of double-oscillator power-exponent prism phononic crystal plate. |
| المؤلفون: |
Zhang, Zhan, Zhang, Zhenhua, Jin, Xing |
| المصدر: |
Journal of Applied Physics; 9/14/2023, Vol. 134 Issue 10, p1-13, 13p |
| مصطلحات موضوعية: |
PHONONIC crystals, PRISMS, SMART structures, FREQUENCIES of oscillating systems |
| مستخلص: |
This study introduces a local resonance mechanism to a periodic acoustic black hole (ABH) structure to achieve vibration control of plate structures and proposes a double-oscillator power-exponent prism phononic crystal. Results show that the periodic power-exponent prism can generate a high-frequency bandgap, the interior oscillator can generate a low-frequency bandgap, and the top oscillator can separate the frequency dispersion curve at around 700 Hz to form a bandgap with a width of 189 Hz. The double-oscillator power-exponent prism phononic crystal, composed of two types of oscillators and a power-exponent prism, can simultaneously have high-, middle-, and low-frequency bandgaps. Simulations and experiments show that it has a good attenuation effect on flexural vibration in the bandgap frequency band. The present results can provide a useful reference for bandgap design based on the combination of multiple mechanisms. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
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