Beam Theory of Thermal–Electro-Mechanical Coupling for Single-Wall Carbon Nanotubes
The potential application field of single-walled carbon nanotubes (SWCNTs) is immense, due to their remarkable mechanical and electrical properties. However, their mechanical properties under combined physical fields have not attracted researchers’ attention. For the first time, the present paper pr...
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MDPI AG
2021-04-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/11/4/923 |
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| author | Kun Huang Ji Yao |
| author_facet | Kun Huang Ji Yao |
| author_sort | Kun Huang |
| collection | DOAJ |
| description | The potential application field of single-walled carbon nanotubes (SWCNTs) is immense, due to their remarkable mechanical and electrical properties. However, their mechanical properties under combined physical fields have not attracted researchers’ attention. For the first time, the present paper proposes beam theory to model SWCNTs’ mechanical properties under combined temperature and electrostatic fields. Unlike the classical Bernoulli–Euler beam model, this new model has independent extensional stiffness and bending stiffness. Static bending, buckling, and nonlinear vibrations are investigated through the classical beam model and the new model. The results show that the classical beam model significantly underestimates the influence of temperature and electrostatic fields on the mechanical properties of SWCNTs because the model overestimates the bending stiffness. The results also suggest that it may be necessary to re-examine the accuracy of the classical beam model of SWCNTs. |
| first_indexed | 2024-03-10T12:37:15Z |
| format | Article |
| id | doaj.art-f26d1278a9154c79bbf101274a2df747 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T12:37:15Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-f26d1278a9154c79bbf101274a2df7472023-11-21T14:14:27ZengMDPI AGNanomaterials2079-49912021-04-0111492310.3390/nano11040923Beam Theory of Thermal–Electro-Mechanical Coupling for Single-Wall Carbon NanotubesKun Huang0Ji Yao1Department of Engineering Mechanics, Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming 650500, ChinaDepartment of Engineering Mechanics, Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming 650500, ChinaThe potential application field of single-walled carbon nanotubes (SWCNTs) is immense, due to their remarkable mechanical and electrical properties. However, their mechanical properties under combined physical fields have not attracted researchers’ attention. For the first time, the present paper proposes beam theory to model SWCNTs’ mechanical properties under combined temperature and electrostatic fields. Unlike the classical Bernoulli–Euler beam model, this new model has independent extensional stiffness and bending stiffness. Static bending, buckling, and nonlinear vibrations are investigated through the classical beam model and the new model. The results show that the classical beam model significantly underestimates the influence of temperature and electrostatic fields on the mechanical properties of SWCNTs because the model overestimates the bending stiffness. The results also suggest that it may be necessary to re-examine the accuracy of the classical beam model of SWCNTs.https://www.mdpi.com/2079-4991/11/4/923single-walled carbon nanotubesthermal–electro-mechanical couplingBernoulli–Euler beam theoryindependent stiffness |
| spellingShingle | Kun Huang Ji Yao Beam Theory of Thermal–Electro-Mechanical Coupling for Single-Wall Carbon Nanotubes Nanomaterials single-walled carbon nanotubes thermal–electro-mechanical coupling Bernoulli–Euler beam theory independent stiffness |
| title | Beam Theory of Thermal–Electro-Mechanical Coupling for Single-Wall Carbon Nanotubes |
| title_full | Beam Theory of Thermal–Electro-Mechanical Coupling for Single-Wall Carbon Nanotubes |
| title_fullStr | Beam Theory of Thermal–Electro-Mechanical Coupling for Single-Wall Carbon Nanotubes |
| title_full_unstemmed | Beam Theory of Thermal–Electro-Mechanical Coupling for Single-Wall Carbon Nanotubes |
| title_short | Beam Theory of Thermal–Electro-Mechanical Coupling for Single-Wall Carbon Nanotubes |
| title_sort | beam theory of thermal electro mechanical coupling for single wall carbon nanotubes |
| topic | single-walled carbon nanotubes thermal–electro-mechanical coupling Bernoulli–Euler beam theory independent stiffness |
| url | https://www.mdpi.com/2079-4991/11/4/923 |
| work_keys_str_mv | AT kunhuang beamtheoryofthermalelectromechanicalcouplingforsinglewallcarbonnanotubes AT jiyao beamtheoryofthermalelectromechanicalcouplingforsinglewallcarbonnanotubes |