On effective moduli of defective beam lattices via the lattice green's functions
文献类型：期刊论文
| 作者 | Gong,Yuhao2; Liu,Jinxing2 ; Liang NG(梁乃刚)1
|
| 刊名 | INTERNATIONAL JOURNAL OF DAMAGE MECHANICS
 |
| 出版日期 | 2024-11-22 |
| 页码 | 33 |
| 关键词 | Beam lattice defect effect lattice green's functions stress redistribution effective moduli |
| ISSN号 | 1056-7895 |
| DOI | 10.1177/10567895241292746 |
| 通讯作者 | Liu, Jinxing(jxliu@mails.ucas.ac.cn) |
| 英文摘要 | A method is proposed to analyze the effective moduli of periodically defective beam lattices by using the Lattice Green's Functions (LGF). The LGF of beam lattices is built to calculate the displacement caused by external nodal forces. We describe the stress redistribution due to defects by applying extra nodal forces. Then, analyzing a defective unit cell is equivalently transformed to that on its perfect counterpart by representing the influence of defects by an equivalent force field based on the superposition principle. Based on the obtained displacement field of the defective unit cell, the elastic moduli of defective lattices can be calibrated based on the equivalence of strain energy, which indicates that the strain energy of the structural energetic expression is equal to its continuum counterpart. By comparing it with finite element simulations, the prediction ability of the proposed method has been demonstrated. Systematic parametric analyses are then carried out to illustrate the effects of element types, defect types, the defect number density, and the slenderness ratio on the effective moduli of defective lattices. |
| 分类号 | 二类/Q1 |
| WOS关键词 | CONTINUUM MODEL ; BEHAVIOR ; METAMATERIALS ; HONEYCOMBS ; INCLUSION ; STRENGTH ; TENSION ; STRESS ; FORCE |
| 资助项目 | National Science Foundation of China[11972174] |
| WOS研究方向 | Materials Science ; Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:001360818300001 |
| 资助机构 | National Science Foundation of China |
| 其他责任者 | Liu, Jinxing |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/97568]  |
| 专题 | 力学研究所_职能与支撑部门 |
| 作者单位 | 1.Chinese Acad Sci, Inst Mech, Beijing, Peoples R China 2.Jiangsu Univ, Fac Civil Engn & Mech, Zhenjiang, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Gong,Yuhao,Liu,Jinxing,Liang NG. On effective moduli of defective beam lattices via the lattice green's functions[J]. INTERNATIONAL JOURNAL OF DAMAGE MECHANICS,2024:33. |
| APA | Gong,Yuhao,Liu,Jinxing,&梁乃刚.(2024).On effective moduli of defective beam lattices via the lattice green's functions.INTERNATIONAL JOURNAL OF DAMAGE MECHANICS,33. |
| MLA | Gong,Yuhao,et al."On effective moduli of defective beam lattices via the lattice green's functions".INTERNATIONAL JOURNAL OF DAMAGE MECHANICS (2024):33. |
入库方式： OAI收割
来源：力学研究所
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