In order to design phononic crystals whose band-gaps are located in low-frequency ranges, researchers commonly adopt low stiffness polymeric materials as key constituents and exploit the high impedance mismatch between metals and polymers. However, there has been very little research on wave propagation at arbitrary angles in the sagittal plane of viscoelastic-elastic multilayered composites because there exist the intricate wave attenuation characteristics at the layer interfaces. The objective of our investigation is to obtain analytical dispersion relation for oblique wave motion in the sagittal plane of infinitely periodic multilayered composite composed of alternating viscoelastic and elastic solids, where the attenuation of harmonic plane waves is found to occur only in the direction perpendicular to the layers. By using this wave propagation characteristic, we directly apply the semi-analytical approach employed in elastic multilayered composites to calculate the dispersion relation of sagittal plane waves in alternating viscoelastic-elastic multilayered composites. Specifically, we consider a bilayered composite composed of alternating aluminum and polyurethane elastomer, whose complex-valued viscoelastic moduli are experimentally determined by performing dynamic mechanical analysis (DMA). The analysis shows that the alternating viscoelastic-elastic layered composite does not possess a phononic band-gap regardless of incident angles. In addition, wave motions at oblique angles are found to travel with a wide range of frequency contents compared to wave motions perpendicular to the layers. The presented analysis demonstrates that wave dispersion relation in viscoelastic-elastic layered composites is distinctly different from the corresponding elastic counterpart, and highlights the importance of the viscoelastic modeling of polymeric materials in wave dispersion analysis.
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April 2018
Research-Article
Sagittal Plane Waves in Infinitely Periodic Multilayered Composites Composed of Alternating Viscoelastic and Elastic Solids
A. B. M. Tahidul Haque,
A. B. M. Tahidul Haque
Department of Civil, Structural and
Environmental Engineering,
University at Buffalo,
Buffalo, NY 14260
Environmental Engineering,
University at Buffalo,
Buffalo, NY 14260
Search for other works by this author on:
Ratiba F. Ghachi,
Ratiba F. Ghachi
Department of Civil and Architectural
Engineering,
Qatar University,
P. O. Box 2713,
Doha, Qatar
Engineering,
Qatar University,
P. O. Box 2713,
Doha, Qatar
Search for other works by this author on:
Wael I. Alnahhal,
Wael I. Alnahhal
Department of Civil and Architectural
Engineering,
Qatar University
P. O. Box 2713,
Doha, Qatar
Engineering,
Qatar University
P. O. Box 2713,
Doha, Qatar
Search for other works by this author on:
Amjad Aref,
Amjad Aref
Department of Civil, Structural and
Environmental Engineering,
University at Buffalo,
Buffalo, NY 14260
Environmental Engineering,
University at Buffalo,
Buffalo, NY 14260
Search for other works by this author on:
Jongmin Shim
Jongmin Shim
Department of Civil, Structural and
Environmental Engineering,
University at Buffalo,
240 Ketter Hall,
Buffalo, NY 14260
e-mail: jshim@buffalo.edu
Environmental Engineering,
University at Buffalo,
240 Ketter Hall,
Buffalo, NY 14260
e-mail: jshim@buffalo.edu
Search for other works by this author on:
A. B. M. Tahidul Haque
Department of Civil, Structural and
Environmental Engineering,
University at Buffalo,
Buffalo, NY 14260
Environmental Engineering,
University at Buffalo,
Buffalo, NY 14260
Ratiba F. Ghachi
Department of Civil and Architectural
Engineering,
Qatar University,
P. O. Box 2713,
Doha, Qatar
Engineering,
Qatar University,
P. O. Box 2713,
Doha, Qatar
Wael I. Alnahhal
Department of Civil and Architectural
Engineering,
Qatar University
P. O. Box 2713,
Doha, Qatar
Engineering,
Qatar University
P. O. Box 2713,
Doha, Qatar
Amjad Aref
Department of Civil, Structural and
Environmental Engineering,
University at Buffalo,
Buffalo, NY 14260
Environmental Engineering,
University at Buffalo,
Buffalo, NY 14260
Jongmin Shim
Department of Civil, Structural and
Environmental Engineering,
University at Buffalo,
240 Ketter Hall,
Buffalo, NY 14260
e-mail: jshim@buffalo.edu
Environmental Engineering,
University at Buffalo,
240 Ketter Hall,
Buffalo, NY 14260
e-mail: jshim@buffalo.edu
1Corresponding author.
Contributed by the Applied Mechanics Division of ASME for publication in the JOURNAL OF APPLIED MECHANICS. Manuscript received September 8, 2017; final manuscript received January 16, 2018; published online February 2, 2018. Editor: Yonggang Huang.
J. Appl. Mech. Apr 2018, 85(4): 041001 (15 pages)
Published Online: February 2, 2018
Article history
Received:
September 8, 2017
Revised:
January 16, 2018
Citation
Tahidul Haque, A. B. M., Ghachi, R. F., Alnahhal, W. I., Aref, A., and Shim, J. (February 2, 2018). "Sagittal Plane Waves in Infinitely Periodic Multilayered Composites Composed of Alternating Viscoelastic and Elastic Solids." ASME. J. Appl. Mech. April 2018; 85(4): 041001. https://doi.org/10.1115/1.4039039
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