Related Experiment Video
Updated: Aug 19, 2025
11:29
Novel 3D/VR Interactive Environment for MD Simulations, Visualization and Analysis
Published on: December 18, 2014
12.0K
Elastic Moduli of Non-Chiral Singe-Walled Silicon Carbide Nanotubes: Numerical Simulation Study
Nataliya A Sakharova1, André F G Pereira1, Jorge M Antunes1,2
1Centre for Mechanical Engineering, Materials and Processes (CEMMPRE), Department of Mechanical Engineering, University of Coimbra, Rua Luís Reis Santos, Pinhal de Marrocos, 3030-788 Coimbra, Portugal.
Materials (Basel, Switzerland)
|November 26, 2022
Summary
Silicon carbide nanotubes (SiCNTs) offer superior thermal stability over carbon nanotubes for high-temperature applications. This study determines their mechanical properties, specifically Young
Area of Science:
- Materials Science
- Nanotechnology
- Mechanical Engineering
Background:
- Silicon carbide nanotubes (SiCNTs) show promise for nanodevices and biosensors due to excellent chemical, electrical, and thermal properties.
- SiCNTs are potential replacements for carbon nanotubes in high-temperature composites owing to their enhanced thermal stability.
- Theoretical studies on SiCNT mechanical properties are limited, hindering nanodevice and composite design.
Purpose of the Study:
- To determine the Young's and shear moduli of non-chiral single-walled silicon carbide nanotubes.
- To provide fundamental mechanical data for SiCNT-based nanodevices and composites.
- To advance theoretical understanding of SiCNT mechanical behavior.
Main Methods:
- Utilized a three-dimensional finite element model.
- Simulated non-chiral single-walled silicon carbide nanotubes.
- Calculated Young's and shear moduli.
Main Results:
- Determined Young's modulus for SiCNTs.
- Determined shear modulus for SiCNTs.
- Provided essential mechanical property data.
Conclusions:
- The study provides crucial mechanical property data for silicon carbide nanotubes.
- This data is vital for the design and application of SiCNTs in high-temperature environments.
- Further theoretical and experimental investigations into SiCNT properties are warranted.
Related Concept Videos
01:15Strain and Elastic Modulus
4.0K
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...
4.0K
01:15Relation between Poisson's ratio, Modulus of Elasticity and Modulus of Rigidity
313
Deformation occurs in axial and transverse directions when an axial load is applied to a slender bar. This deformation impacts the cubic element within the bar, transforming it into either a rectangular parallelepiped or a rhombus, contingent on its orientation. This transformation process induces shearing strain. Axial loading elicits both shearing and normal strains. Applying an axial load instigates equal normal and shearing stresses on elements oriented at a 45° angle to the load axis.
313
01:20Elasticity in Concrete
123
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...
123
01:16Dynamic Modulus of Elasticity of Concrete
477
The dynamic modulus of elasticity assesses how a concrete structure deforms under impact or dynamic loads. It is typically higher than the static modulus of elasticity, measured under slow, steady loading conditions.
The sonic test is a common method to determine the dynamic modulus. In this test, a concrete beam, sized either 6 x 6 x 30 inches or 4 x 4 x 20 inches, is clamped at its center. Vibrations are initiated at one end of the beam by an electromagnetic exciter unit powered by...
The sonic test is a common method to determine the dynamic modulus. In this test, a concrete beam, sized either 6 x 6 x 30 inches or 4 x 4 x 20 inches, is clamped at its center. Vibrations are initiated at one end of the beam by an electromagnetic exciter unit powered by...
477
01:08Bending of Members Made of Several Materials
248
In analyzing a structural member composed of two different materials with identical cross-sectional areas, it is crucial to understand how their distinct elastic properties affect the member's response under load. The analysis involves assessing stress and strain distributions using the transformed section concept, which accounts for variations in material properties.
Hooke's Law determines stress in each material, stating that stress is proportional to strain but varies due to each...
Hooke's Law determines stress in each material, stating that stress is proportional to strain but varies due to each...
248
01:26Hooke's Law
517
Hooke's law, a pivotal principle in material science, establishes that the strain a material undergoes is directly proportional to the applied stress, defined by a factor called the modulus of elasticity or Young's modulus.
517