Elastodynamic behaviors of steady moving straight dislocation within thin nano film
The elastodynamic dislocation behaviors are of great interest for understanding the performances of structural alloys under intense dynamic loading conditions. The formation, propagations, and interactions of dislocations (such as injected dislocation, accelerating dislocation, steady moving disloca...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2024-09-01
|
| Series: | Theoretical and Applied Mechanics Letters |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S209503492400062X |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1846119516334981120 |
|---|---|
| author | Ran Tao Yehui Hong Zheyu Li Wenwang Wu |
| author_facet | Ran Tao Yehui Hong Zheyu Li Wenwang Wu |
| author_sort | Ran Tao |
| collection | DOAJ |
| description | The elastodynamic dislocation behaviors are of great interest for understanding the performances of structural alloys under intense dynamic loading conditions. The formation, propagations, and interactions of dislocations (such as injected dislocation, accelerating dislocation, steady moving dislocation at high constant speed) are quite different from static dislocations. For steady-moving dislocation within the isotropic infinite medium, the effects of surface and interface on steady-moving dislocations within limited space are still known. In this paper, we investigate the elastodynamic image stress simulation of steady moving dislocation within film of limited thickness at constant speed using Eigenstrain theory, Lorentz transformation, and steady dynamic equilibrium equations. We propose an efficient solution method that involves complex Fourier series, transforming partial differential equations into ordinary differential equations, and ultimately into a set of algebraic equations in spectral space. The effects of dislocation speed and position near the free surface on the image stress of steady-moving climbing and gliding dislocations within the thin film are examined. The results show that relativistic effects are significant for certain dislocation configurations and stress components, whereas other stress components are less sensitive to relativistic effects near the transonic speed region. |
| format | Article |
| id | doaj-art-f54a4b27cc41483f850a1efb47c33a08 |
| institution | Kabale University |
| issn | 2095-0349 |
| language | English |
| publishDate | 2024-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Theoretical and Applied Mechanics Letters |
| spelling | doaj-art-f54a4b27cc41483f850a1efb47c33a082024-12-17T04:59:31ZengElsevierTheoretical and Applied Mechanics Letters2095-03492024-09-01145100551Elastodynamic behaviors of steady moving straight dislocation within thin nano filmRan Tao0Yehui Hong1Zheyu Li2Wenwang Wu3Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, ChinaInstitute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, ChinaInstitute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, ChinaSuzhou laboratory, Suzhou 215028, China; Corresponding author.The elastodynamic dislocation behaviors are of great interest for understanding the performances of structural alloys under intense dynamic loading conditions. The formation, propagations, and interactions of dislocations (such as injected dislocation, accelerating dislocation, steady moving dislocation at high constant speed) are quite different from static dislocations. For steady-moving dislocation within the isotropic infinite medium, the effects of surface and interface on steady-moving dislocations within limited space are still known. In this paper, we investigate the elastodynamic image stress simulation of steady moving dislocation within film of limited thickness at constant speed using Eigenstrain theory, Lorentz transformation, and steady dynamic equilibrium equations. We propose an efficient solution method that involves complex Fourier series, transforming partial differential equations into ordinary differential equations, and ultimately into a set of algebraic equations in spectral space. The effects of dislocation speed and position near the free surface on the image stress of steady-moving climbing and gliding dislocations within the thin film are examined. The results show that relativistic effects are significant for certain dislocation configurations and stress components, whereas other stress components are less sensitive to relativistic effects near the transonic speed region.http://www.sciencedirect.com/science/article/pii/S209503492400062XElastodynamicImage stressDislocationThin film |
| spellingShingle | Ran Tao Yehui Hong Zheyu Li Wenwang Wu Elastodynamic behaviors of steady moving straight dislocation within thin nano film Theoretical and Applied Mechanics Letters Elastodynamic Image stress Dislocation Thin film |
| title | Elastodynamic behaviors of steady moving straight dislocation within thin nano film |
| title_full | Elastodynamic behaviors of steady moving straight dislocation within thin nano film |
| title_fullStr | Elastodynamic behaviors of steady moving straight dislocation within thin nano film |
| title_full_unstemmed | Elastodynamic behaviors of steady moving straight dislocation within thin nano film |
| title_short | Elastodynamic behaviors of steady moving straight dislocation within thin nano film |
| title_sort | elastodynamic behaviors of steady moving straight dislocation within thin nano film |
| topic | Elastodynamic Image stress Dislocation Thin film |
| url | http://www.sciencedirect.com/science/article/pii/S209503492400062X |
| work_keys_str_mv | AT rantao elastodynamicbehaviorsofsteadymovingstraightdislocationwithinthinnanofilm AT yehuihong elastodynamicbehaviorsofsteadymovingstraightdislocationwithinthinnanofilm AT zheyuli elastodynamicbehaviorsofsteadymovingstraightdislocationwithinthinnanofilm AT wenwangwu elastodynamicbehaviorsofsteadymovingstraightdislocationwithinthinnanofilm |