What is it about?
Pentamode materials are known for their amazing abilities to achieve any prescribed mechanical properties by tailoring the geometry of constituent elements and even to behave as fluids when radii of their connecting joints tend to zero. Yet, the negligibly small joints make these materials challenging to manufacture and use due to extreme fragility. We have found that increasing the joint sizes can be beneficial for advanced control of waves propagating in the pentamodes once they are interchanged by phononic plates.
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Why is it important?
This paper shows how a combination of pentamode lattices with phononic plates capable of attenuating only in-plane vibrations can be used to achieve a truly omnidirectional wave attenuation.
Perspectives
I hope this article will inspire researchers to design more effective vibration attenuating phononic materials with tunable functionalities that will be applied in various fields.
Dr. Anastasiia O. Krushynska
University of Groningen
Read the Original
This page is a summary of: Hybrid metamaterials combining pentamode lattices and phononic plates, Applied Physics Letters, November 2018, American Institute of Physics,
DOI: 10.1063/1.5052161.
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