... radii. After validating the modeling method, a model of the PCSB is established to calculate band structure and transmittance response, and the results show good agreement. It is found that the PCSB can open wider and lower band gaps compared to a traditional sandwich beam (TSB). The band-folding...

... acoustic black holes. The band gap properties of the infinite structure and the influence of the design variables are investigated by using the finite element method and the Floquet–Bloch theorem. The vibration transmission and frequency response functions of the finite structure are presented to reveal...

...Hao Gao; Yegao Qu; Guang Meng Phononic crystals are periodically engineered structures with special acoustic properties that natural materials cannot have. One typical feature of phononic crystals is the emergence of band gaps wherein the wave propagation is prohibited due to the spatial...

.... The effects of the iteration number on the band gaps and the band edge modes are studied. The finite element software was used to simulate the dynamic response of the triangular lattice with Koch fractal for verifying the vibration suppression performance. The results show that the triangular lattice...

... hexagonal honeycomb with smaller hexagons stacked in a woodpile pattern. Band structure analysis reveals that, in the considered range of frequency, the maximum band gap for the hierarchical honeycomb is localized in the frequency corresponding to the natural vibration frequency of the cell strut...

... in - , respectively. Through straightforward circuit analysis, the equivalent capacitance of this circuit is determined as In the study, the concept of a new active elastic metamaterial is first proposed to achieve band gap control through the use of negative capacitance shunted piezoelectric patches...

... and Phononic Band Gaps ,” Q. J. Mech. Appl. Math. , 56 , pp. 45 – 64 . 10.1093/qjmam/56.1.45 [15] Ruzzene , M. , Scarpa , F. , and Soranna , F. , 2003 , “ Wave Beaming Effects in Two-Dimensional Cellular Structures Grid ,” Smart Mater. Struct. , 12 , pp. 363 – 372 . 10.1088/0964-1726...

... ) | This subsection is devoted to a numerical study of the LR beam structures mentioned above. The purpose is twofold: (1) to test the methodology presented in this paper and (2) to illustrate some band gap characteristics of the LR beams under consideration. First, we examine the band gaps in infinite LR...

...Dianlong Yu; Jihong Wen; Honggang Zhao; Yaozong Liu; Xisen Wen The flexural vibration band gap in a periodic fluid-conveying pipe system is studied based on the Timoshenko beam theory. The band structure of the flexural wave is calculated with a transfer matrix method to investigate the gap...

...G. L. Huang; C. T. Sun In this study, we investigated dispersion curves and the band gap structure of a multiresonator mass-in-mass lattice system. The unit cell of the lattice system consists of three separate masses connected by linear springs. It was demonstrated that the band gaps can...