Finite element modeling of the viscoelastic contact for a composite micropillar
文献类型：期刊论文
| 作者 | Gong, Ling1,2; Pan, Douxing2; Wang, Xiaojie2
|
| 刊名 | MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
 |
| 出版日期 | 2021-03-04 |
| 卷号 | 28 |
| 关键词 | Composite micropillar gradient elasticity roughness viscoelastic contact ramp loading finite element modeling |
| ISSN号 | 1537-6494 |
| DOI | 10.1080/15376494.2019.1578011 |
| 通讯作者 | Wang, Xiaojie(xjwang@iamt.ac.cn) |
| 英文摘要 | The natural adhesive setae and the bio-inspired composite fibrils possess decreasing elastic properties along their length. This feature has demonstrated the potential to enhance adhesion on rough substrates. In this study, the viscoelastic contact behavior between a spherical asperity and a soft polymer was firstly studied by the analytical and finite element methods. The numerical results for both methods were compared to verify the reliability of the finite element one in modeling the viscoelastic contact. Then, the finite element method was used to systematically investigate the viscoelastic contact between a spherical asperity and a composite micropillar that consists of a stiff base stalk and a soft top layer. Effects of the thickness of the soft top layer, the radius of the spherical asperity, and the plateau load on contact properties were evaluated. The tensile stress distribution along the contact interface between a flat rigid substrate surface and the composite micropillar was also studied. The results indicate that there exists a critical thickness for the soft top layer of the composite micropillar. The existence of the critical thickness likely correlates with the stiffness of the composite micropillar and the hardening behavior of the soft top layer. It is suggested that the thickness of the soft top layer should not be less than the critical value. The viscoelastic effects of the soft material facilitate the adaptation to rough surfaces. This study can contribute to a better understanding of viscoelastic contact problem for a composite micropillar, and further guide optimal design of composite micropillars for bio-inspired adhesion. |
| WOS研究方向 | Materials Science ; Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:000616245300010 |
| 出版者 | TAYLOR & FRANCIS INC |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/120188]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Wang, Xiaojie |
| 作者单位 | 1.Univ Sci & Technol China, Dept Precis Machinery & Precis Instrumentat, Hefei, Peoples R China 2.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Adv Mfg Technol, Changzhou 213164, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gong, Ling,Pan, Douxing,Wang, Xiaojie. Finite element modeling of the viscoelastic contact for a composite micropillar[J]. MECHANICS OF ADVANCED MATERIALS AND STRUCTURES,2021,28. |
| APA | Gong, Ling,Pan, Douxing,&Wang, Xiaojie.(2021).Finite element modeling of the viscoelastic contact for a composite micropillar.MECHANICS OF ADVANCED MATERIALS AND STRUCTURES,28. |
| MLA | Gong, Ling,et al."Finite element modeling of the viscoelastic contact for a composite micropillar".MECHANICS OF ADVANCED MATERIALS AND STRUCTURES 28(2021). |
入库方式： OAI收割
来源：合肥物质科学研究院
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