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Dynamic Characterization of Microstructured Materials Made of Hexagonal-Shape Particles with Elastic Interfaces
Marco Colatosti1, Nicholas Fantuzzi2, Patrizia Trovalusci1
1DISG Department, Sapienza University of Rome, via A. Gramsci 53, 00197 Rome, Italy.
Nanomaterials (Basel, Switzerland)
|August 7, 2021
Summary
This study analyzes the dynamic behavior of hexagonal microstructured materials. Micropolar models better capture material anisotropies and internal lengths compared to classical models, revealing distinct vibration characteristics.
Area of Science:
- Materials Science
- Solid Mechanics
- Continuum Mechanics
Background:
- Microstructured materials exhibit complex mechanical behaviors influenced by particle shape and arrangement.
- Understanding the dynamic response of these materials is crucial for designing advanced applications.
- Existing classical models may not fully capture the unique characteristics arising from microstructural details.
Purpose of the Study:
- To investigate the dynamic characteristics of microstructured materials composed of hexagonal particles.
- To compare the predictive capabilities of discrete, homogenized micropolar, and classical models.
- To highlight the advantages of micropolar theory in describing anisotropic and internally structured materials.
Main Methods:
- Analysis of hexagonal particles with varying shapes interacting with elastic interfaces.
- Development and application of a discrete model as a benchmark.
- Implementation and comparison with a homogenized micropolar model and a classical continuum model.
Main Results:
- Different hexagonal textures exhibit distinct constitutive behaviors.
- The micropolar model demonstrates superior accuracy in capturing the effects of internal lengths and material anisotropies.
- Comparisons reveal significant differences in natural frequencies and vibration modes between the models.
Conclusions:
- The dynamic behavior of microstructured materials is highly dependent on their specific hexagonal texture.
- Homogenized micropolar models offer a more comprehensive description of microstructured materials than classical models.
- This research provides insights into the vibrational analysis of advanced materials with complex microstructures.
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