期刊
ENGINEERING FRACTURE MECHANICS
卷 199, 期 -, 页码 372-379出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.engfracmech.2018.06.013
关键词
Suture; 3D printing; Fracture; Composites
类别
资金
- National Science Foundation (NSF) [CMMI 1362893]
- US Air Force Office of Scientific Research (AFOSR) [FA9550-16-1-0011]
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [1362893] Funding Source: National Science Foundation
Inspired by the biological sutures in nature, triangular suture specimens with different tooth tip angle and material combinations were fabricated via multi-material 3D printing. From mechanical experiments under uni-axial tension, two basic failure mechanisms were observed: tooth breakage and the cohesive failure of the interfacial layer. It was found that when the tooth tip angle increases and/or the strength of the material in the interfacial layer increases, the failure mechanism of sutures can transit from tooth breakage mode to the cohesive failure of the interfacial layer. To further understand the different failure mechanisms of sutures, advanced nonlinear finite element simulations were performed. The finite element models can predict both the overall load-displacement relation and the failure mechanisms of the 3D printed sutures.
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