Low frequency ship vibration isolation using the band gap concept of sandwich plate-type elastic metastructures

Design of cylindrical honeycomb sandwich meta-structures for vibration suppression

Theoretical modelling and design of metamaterial stiffened plate for vibration suppression and supersonic flutter

Investigation of a new metamaterial magnetorheological elastomer isolator with tunable vibration bandgaps

Bandgap properties in metamaterial sandwich plate with periodically embedded plate-type resonators

Low-frequency vibration insulation performance of the pyramidal lattice sandwich metamaterial beam

Active Control of Thermo-mechanical Buckling of Composite Laminated Plates Using Piezoelectric Actuators

This work aims to explore optimal design and control of thermal buckling for composite laminates with piezoelectric fiber reinforced composite (PFRC) actuators. Four-variable trigonometric shear deformation theory without introduction of a shear correction factor is used in the structural modeling. The high accuracy of the present approach is examined by analyzing the critical buckling temperature and natural frequency compared with references results. A temperature feedback control approach is proposed in designing the controller. Taking fiber angle as the optimization design variable, layerwise optimization approach (LOA) is applied to maximize critical buckling temperature of piezolaminated plate and a set of stacking sequences are obtained. The resulting analysis demonstrates that the proposed control approach can clearly increase the critical buckling temperature of piezo-laminated plates. The optimization process developed is useful in devising stacking sequences for the piezo-laminated structures in thermal environments.

Optimization of thermal buckling control for composite laminates with PFRC actuators using trigonometric shear deformation theory

The invention discloses an experimental device of a surrounding type local resonance light dot matrix sandwich plate structure, relates to a deoxidizing structure and aims to solve the problem of thefailure of a traditional lattice sandwich structure to control the propagation of low-frequency elastic waves and the problem of low rigidity and large mass of a local resonance type acoustic meta-material. The experimental device comprises an upper plate body and a lower plate body; the upper plate body and the lower plate body are sequentially and horizontally arranged from top to bottom; and the experimental device further comprises a plurality of supporting units which are arranged between the lower surface of the upper plate body and the upper surface of the lower plate body in a matrix mode. The invention belongs to the technical field of mechanical experiment devices. A lattice sandwich and a local resonance type acoustic meta-material (a vibration absorber assembly) are combined, so that the structure has higher strength and stability, and meanwhile, can achieve a low-frequency vibration suppression effect.

Yao Zhang

Papers

Bandgap properties in metamaterial sandwich plate with periodically embedded plate-type resonators

Low-frequency vibration insulation performance of the pyramidal lattice sandwich metamaterial beam

Active Control of Thermo-mechanical Buckling of Composite Laminated Plates Using Piezoelectric Actuators

Optimization of thermal buckling control for composite laminates with PFRC actuators using trigonometric shear deformation theory

Experimental device of surrounding type local resonance light dot matrix sandwich plate structure