Multiscale modeling of mechanical behavior and failure mechanism of 3D angle-interlock woven aluminum composites subjected to warp/weft directional tension loading
| Autor: | Zhenjun Wang, Zhifeng Xu, Changchun Cai, Bowen Xiong, Siyuan Yang, Shiping Sun, Wei Yang, Yingfeng Zhang, Huan Yu |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0209 industrial biotechnology
Materials science Aerospace Engineering 02 engineering and technology 01 natural sciences 010305 fluids & plasmas Matrix (mathematics) 020901 industrial engineering & automation 0103 physical sciences Failure mechanism Multiscale modeling Composite material Mechanical behavior Microscale chemistry Motor vehicles. Aeronautics. Astronautics Mesoscopic physics Aluminum matrix composites Tension (physics) Mechanical Engineering TL1-4050 Yarn Cracking visual_art Fracture (geology) visual_art.visual_art_medium Progressive damage |
| Zdroj: | Chinese Journal of Aeronautics, Vol 34, Iss 8, Pp 202-217 (2021) |
| ISSN: | 1000-9361 |
| Popis: | The mechanical behavior and progressive damage mechanism of novel aluminum matrix composites reinforced with 3D angle-interlock woven carbon fibers were investigated using a multiscale modeling approach. The mechanical properties and failure of yarns were evaluated using a microscale model under different loading scenarios. On this basis, a mesoscale model was developed to analyze the tensile behavior and failure mechanism of the composites. The interfacial decohesion, matrix damage, and failure of fibers and yarns were incorporated into the microscopic and mesoscopic models. The stress–strain curves and fracture modes from simulation show good agreement with the experimental curves and fracture morphology. Local interface and matrix damage initiate first under warp directional tension. Thereafter, interfacial failure, weft yarn cracking, and matrix failure occur successively. Axial fracture of warp yarn, which displays a quasi-ductile fracture characteristic, dominates the ultimate composites failure. Under weft directional tension, interfacial failure and warp yarn rupture occur at the early and middle stages. Matrix failure and weft yarn fracture emerge simultaneously at the final stage, leading to the cata-strophic failure of composites. The weft directional strength and fracture strain are lower than the warp directional ones because of the lower weft density and the more serious brittle fracture of weft yarns. |
| Databáze: | OpenAIRE |
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