Bending Response of 3D-Printed Titanium Alloy Sandwich Panels with Corrugated Channel Cores
| Autor: | Zhao Zhenyu, Tian Jian Lu, Yilai Zhou, Xin Wang, Shao-Feng Du, Jian-Wei Ren, Qian-Cheng Zhang, Zi-Han Wei, Zhi-Kun Yang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
mechanism maps
Fabrication Materials science 3D-printed sandwich sandwich panels with corrugated channel core 02 engineering and technology Bending lcsh:Technology Article 0203 mechanical engineering geometrical optimization General Materials Science Selective laser melting Composite material lcsh:Microscopy Sandwich-structured composite lcsh:QC120-168.85 Computer simulation lcsh:QH201-278.5 lcsh:T Titanium alloy bending response 021001 nanoscience & nanotechnology Finite element method 020303 mechanical engineering & transports Buckling lcsh:TA1-2040 lcsh:Descriptive and experimental mechanics lcsh:Electrical engineering. Electronics. Nuclear engineering 0210 nano-technology lcsh:Engineering (General). Civil engineering (General) lcsh:TK1-9971 |
| Zdroj: | Materials, Vol 14, Iss 556, p 556 (2021) Materials; Volume 14; Issue 3; Pages: 556 Materials |
| ISSN: | 1996-1944 |
| Popis: | Ultralight sandwich constructions with corrugated channel cores (i.e., periodic fluid-through wavy passages) are envisioned to possess multifunctional attributes: simultaneous load-carrying and heat dissipation via active cooling. Titanium alloy (Ti-6Al-4V) corrugated-channel-cored sandwich panels (3CSPs) with thin face sheets and core webs were fabricated via the technique of selective laser melting (SLM) for enhanced shear resistance relative to other fabrication processes such as vacuum brazing. Four-point bending responses of as-fabricated 3CSP specimens, including bending resistance and initial collapse modes, were experimentally measured. The bending characteristics of the 3CSP structure were further explored using a combined approach of analytical modeling and numerical simulation based on the method of finite elements (FE). Both the analytical and numerical predictions were validated against experimental measurements. Collapse mechanism maps of the 3CSP structure were subsequently constructed using the analytical model, with four collapse modes considered (face-sheet yielding, face-sheet buckling, core yielding, and core buckling), which were used to evaluate how its structural geometry affects its collapse initiation mode. |
| Databáze: | OpenAIRE |
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