کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1867099 | 1038167 | 2012 | 7 صفحه PDF | دانلود رایگان |
The plane wave expansion method is extended to study the flexural wave propagation in locally resonant beams with multiple periodic arrays of attached spring-mass resonators. Complex Bloch wave vectors are calculated to quantify the wave attenuation performance of band gaps. It is shown that a locally resonant beam with multiple arrays of damped resonators can achieve much broader band gaps, at frequencies both below and around the Bragg condition, than a locally resonant beam with only a single array of resonators, although the two systems have the same total resonator masses.
► Locally resonant beams with multiple periodic arrays of damped resonators.
► Complex band structure calculated by the plane wave expansion method.
► Coexistence of broad low-frequency and higher-frequency band gaps.
Journal: Physics Letters A - Volume 376, Issue 16, 19 March 2012, Pages 1384–1390