Macroscopic damping model for structural dynamics with random polycrystalline configurations
文献类型：期刊论文
| 作者 | Yang, Yantao1; Cui, Junzhi1 ; Yu, Yifan1; Xiang, Meizhen2
|
| 刊名 | ACTA MECHANICA SINICA
 |
| 出版日期 | 2018-06-01 |
| 卷号 | 34期号:3页码:493-506 |
| ISSN号 | 0567-7718 |
| 关键词 | Polycrystalline cluster Dynamical equation Damping coefficient Two-scale homogenization method Atomic-Continuum Coupled Model |
| DOI | 10.1007/s10409-017-0733-0 |
| 英文摘要 | In this paper the macroscopic damping model for dynamical behavior of the structures with random polycrystalline configurations at micro-nano scales is established. First, the global motion equation of a crystal is decomposed into a set of motion equations with independent single degree of freedom (SDOF) along normal discrete modes, and then damping behavior is introduced into each SDOF motion. Through the interpolation of discrete modes, the continuous representation of damping effects for the crystal is obtained. Second, from energy conservation law the expression of the damping coefficient is derived, and the approximate formula of damping coefficient is given. Next, the continuous damping coefficient for polycrystalline cluster is expressed, the continuous dynamical equation with damping term is obtained, and then the concrete damping coefficients for a polycrystalline Cu sample are shown. Finally, by using statistical two-scale homogenization method, the macroscopic homogenized dynamical equation containing damping term for the structures with random polycrystalline configurations at micro-nano scales is set up. |
| 资助项目 | National Basic Research Program of China (973 Program)[2012CB025904] ; National Natural Science Foundation of China[11102221] ; State Key Laboratory of Science and Engineering Computing (LSEC) |
| WOS研究方向 | Engineering ; Mechanics |
| 语种 | 英语 |
| 出版者 | SPRINGER HEIDELBERG |
| WOS记录号 | WOS:000432609500008 |
| 源URL | [http://ir.amss.ac.cn/handle/2S8OKBNM/30312]  |
| 专题 | 计算数学与科学工程计算研究所 |
| 通讯作者 | Cui, Junzhi |
| 作者单位 | 1.Chinese Acad Sci, Acad Math & Syst Sci, Beijing 100190, Peoples R China 2.Inst Appl Phys & Computat Math, Lab Computat Phys, Beijing 100088, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Yantao,Cui, Junzhi,Yu, Yifan,et al. Macroscopic damping model for structural dynamics with random polycrystalline configurations[J]. ACTA MECHANICA SINICA,2018,34(3):493-506. |
| APA | Yang, Yantao,Cui, Junzhi,Yu, Yifan,&Xiang, Meizhen.(2018).Macroscopic damping model for structural dynamics with random polycrystalline configurations.ACTA MECHANICA SINICA,34(3),493-506. |
| MLA | Yang, Yantao,et al."Macroscopic damping model for structural dynamics with random polycrystalline configurations".ACTA MECHANICA SINICA 34.3(2018):493-506. |
入库方式： OAI收割
来源：数学与系统科学研究院
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