Active metamaterials with broadband controllable stiffness for tunable band gaps and non-reciprocal wave propagation

One dimensional active metamaterials with broadband controllable bending stiffness are studied in this paper. The key unit of the active metamaterials is composed of a host beam and piezoelectric patches bonded on the beam surfaces. These patches serve as sensors or actuators. An appropriate feedbac...

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Published inSmart materials and structures Vol. 28; no. 6; pp. 65025 - 13
Main Authors Yi, Kaijun, Ouisse, Morvan, Sadoulet-Reboul, Emeline, Matten, Gaël
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.06.2019
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Abstract One dimensional active metamaterials with broadband controllable bending stiffness are studied in this paper. The key unit of the active metamaterials is composed of a host beam and piezoelectric patches bonded on the beam surfaces. These patches serve as sensors or actuators. An appropriate feedback control law is proposed in order to change the bending stiffness of the active unit. The input of the control law is the voltage on the sensors, the output is the voltage applied on the actuators. Due to the control, bending stiffness of the active unit is (1 + ) times of that of the bare host beam, being a design parameter in the control law. The bending stiffness can be tuned to desired value by changing . The performances of the controlled bending stiffness are analytically and numerically studied, the stability issues are also discussed. The active units are first used in a spatial periodic waveguide to have tunable band gaps, then they are integrated in a spatiotemporal periodic waveguide to realize non-reciprocal wave propagation. Performances of the two waveguides are numerically studied.
AbstractList One dimensional active metamaterials with broadband controllable bending stiffness are studied in this paper. The key unit of the active metamaterials is composed of a host beam and piezoelectric patches bonded on the beam surfaces. These patches serve as sensors or actuators. An appropriate feedback control law is proposed in order to change the bending stiffness of the active unit. The input of the control law is the voltage on the sensors, the output is the voltage applied on the actuators. Due to the control, bending stiffness of the active unit is (1 + ) times of that of the bare host beam, being a design parameter in the control law. The bending stiffness can be tuned to desired value by changing . The performances of the controlled bending stiffness are analytically and numerically studied, the stability issues are also discussed. The active units are first used in a spatial periodic waveguide to have tunable band gaps, then they are integrated in a spatiotemporal periodic waveguide to realize non-reciprocal wave propagation. Performances of the two waveguides are numerically studied.
One dimensional active metamaterials with broadband controllable bending stiffness are studied in this paper. The key unit of the active metamaterials is composed of a host beam and piezoelectric patches bonded on the beam surfaces. These patches serve as sensors or actuators. An appropriate feedback control law is proposed in order to change the bending stiffness of the active unit. The input of the control law is the voltage on the sensors, the output is the voltage applied on the actuators. Due to the control, bending stiffness of the active unit is (1+α) times of that of the bare host beam, α being a design parameter in the control law. The bending stiffness can be tuned to desired value by changing α. The performances of the controlled bending stiffness are analytically and numerically studied, the stability issues are also discussed. The active units are first used in a spatial periodic waveguide to have tunable band gaps, then they are integrated in a spatiotemporal periodic waveguide to realize non-reciprocal wave propagation. Performances of the two waveguides are numerically studied.
Author Sadoulet-Reboul, Emeline
Ouisse, Morvan
Matten, Gaël
Yi, Kaijun
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  surname: Yi
  fullname: Yi, Kaijun
  email: kaijun.yi@femto-st.fr
  organization: Univ. Bourgogne Franch-Comté , FEMTO-ST Institute, CNRS/UFC/ENSMM/UTBM, Department of Applied Mechanics, 24 rue de l'épitaphe, F-25000, Besançon, France
– sequence: 2
  givenname: Morvan
  surname: Ouisse
  fullname: Ouisse, Morvan
  organization: Univ. Bourgogne Franch-Comté , FEMTO-ST Institute, CNRS/UFC/ENSMM/UTBM, Department of Applied Mechanics, 24 rue de l'épitaphe, F-25000, Besançon, France
– sequence: 3
  givenname: Emeline
  surname: Sadoulet-Reboul
  fullname: Sadoulet-Reboul, Emeline
  organization: Univ. Bourgogne Franch-Comté , FEMTO-ST Institute, CNRS/UFC/ENSMM/UTBM, Department of Applied Mechanics, 24 rue de l'épitaphe, F-25000, Besançon, France
– sequence: 4
  givenname: Gaël
  surname: Matten
  fullname: Matten, Gaël
  organization: Univ. Bourgogne Franch-Comté , FEMTO-ST Institute, CNRS/UFC/ENSMM/UTBM, Department of Applied Mechanics, 24 rue de l'épitaphe, F-25000, Besançon, France
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Snippet One dimensional active metamaterials with broadband controllable bending stiffness are studied in this paper. The key unit of the active metamaterials is...
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SubjectTerms feedback control
Mechanics
metamaterials
non-reciprocal wave propagation
Physics
piezoelectric materials
vibration
Title Active metamaterials with broadband controllable stiffness for tunable band gaps and non-reciprocal wave propagation
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