Related Experiment Video
Updated: Jan 20, 2026
09:39
Characterizing Dissipative Elastic Metamaterials Produced by Additive Manufacturing
Published on: June 28, 2024
1.5K
Designing 3D Digital Metamaterial for Elastic Waves: From Elastic Wave Polarizer to Vibration Control
Huan Liu1, Quan Zhang2, Kai Zhang2,3
1State Key Laboratory of Turbulence and Complex Systems Department of Mechanics and Engineering Science BIC-ESAT College of Engineering Peking university Beijing 100871 China.
Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|August 28, 2019
Summary
Researchers developed a tunable metamaterial using 3D-printed frames and electromagnets to filter elastic waves. This abacus-inspired device allows digital control over wave propagation for vibration control applications.
Area of Science:
- Acoustics
- Materials Science
- Metamaterials
Background:
- Elastic wave polarizers are crucial for filtering specific wave types but are challenging due to the dual transverse and longitudinal nature of elastic waves.
- Existing methods for controlling elastic wave polarization are limited in tunability and adaptability.
Purpose of the Study:
- To propose and demonstrate a tunable, digital, locally resonant metamaterial for filtering elastic waves.
- To enable precise control over elastic wave polarization for advanced vibration control applications.
Main Methods:
- Design and fabrication of a metamaterial unit cell using 3D-printed octahedral frames and integrated electromagnets.
- Utilizing electrical current to control three distinct digital modes within each unit cell, altering elastic wave propagation characteristics.
- Investigating the underlying mechanisms through theoretical analysis, numerical simulations, and experimental validation.
Main Results:
- The proposed metamaterial exhibits tunable polarizer-like characteristics by combining different unit cell modes to form various waveguides.
- Achieved effective filtering of desired polarization from hybrid elastic waves in a controllable manner.
- Demonstrated the potential for creating versatile waveguides through digital mode manipulation.
Conclusions:
- The abacus-inspired metamaterial offers a novel approach to tunable elastic wave filtering.
- This technology shows significant promise for applications in vibration control, particle manipulation, and flexible structure design.
Related Concept Videos
02:12The Wave Nature of Light
60.9K
The nature of light has been a subject of inquiry since antiquity. In the seventeenth century, Isaac Newton performed experiments with lenses and prisms and was able to demonstrate that white light consists of the individual colors of the rainbow combined together. Newton explained his optics findings in terms of a "corpuscular" view of light, in which light was composed of streams of extremely tiny particles traveling at high speeds according to Newton's laws of motion.
60.9K
01:12Elasticity
4.8K
Elasticity is the ability of an object to withstand the effects of distortion and to return to its original size and shape once the forces causing deformation are removed. When an elastic material deforms under the action of an external force, it experiences internal resistance to the deformation. However, if no external force is applied, it returns to its original state.
The elasticity of an object can be described by a stress-strain curve, which represents the relationship between stress...
The elasticity of an object can be described by a stress-strain curve, which represents the relationship between stress...
4.8K
01:20Elasticity in Concrete
329
Upon subjecting concrete to moderate or high uniaxial compressive or tensile stresses, the strain response is non-linear relative to the stress applied. As the stress is removed, the resulting stress-strain curve deviates from the original path traced during loading, creating a hysteresis loop, indicative of the concrete's non-linear and non-elastic properties. Typically, a material's modulus of elasticity, which is a measure of the material's stiffness, is inferred from the linear...
329
01:01Elastic Potential Energy
19.5K
Elastic potential energy is the energy stored as a result of the deformation of an elastic object, such as the stretching of a spring. An object is elastic if it returns to its original shape and size after being deformed.
Potential energy is also associated with the elastic force exerted by an ideal spring. The work done by this force can be represented as a change in the elastic potential energy of the spring. Thus, the work done by a perfectly elastic spring, in one dimension, depends...
Potential energy is also associated with the elastic force exerted by an ideal spring. The work done by this force can be represented as a change in the elastic potential energy of the spring. Thus, the work done by a perfectly elastic spring, in one dimension, depends...
19.5K
01:15Strain and Elastic Modulus
8.8K
The quantity that describes the deformation of a body under stress is known as strain. Strain is given as a fractional change in either length, volume, or geometry under tensile, volume (also known as bulk), or shear stress, respectively, and is a dimensionless quantity. The strain experienced by a body under tensile or compressive stress is called tensile or compressive strain, respectively. In contrast, the strain experienced under bulk stress and shear stress is known as volume and shear...
8.8K
01:23Equation of the Elastic Curve
986
The concept of curvature in plane curves, crucial in structural engineering, defines how sharply a beam bends under load. This curvature is determined using the curve's first and second derivatives.
Consider a cantilever beam with a point load at its free end (for instance, a diving board). When analyzing beam deflection with small slopes, the shape of the beam's elastic curve becomes key. The governing equation for this analysis involves the bending moment and the beam's flexural rigidity,...
Consider a cantilever beam with a point load at its free end (for instance, a diving board). When analyzing beam deflection with small slopes, the shape of the beam's elastic curve becomes key. The governing equation for this analysis involves the bending moment and the beam's flexural rigidity,...
986