Compressive performance of a foam-filled fiber-reinforced grid beetle elytron plate

The compressive mechanical properties, failure modes and foam filler strengthening mechanism and effect of a short basalt fiber-reinforced epoxy resin composite grid beetle elytron plate with a polyvinyl chloride (PVC) foam-filled core (GBEP fc ) are investigated via compression experiments and the...

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Bibliographic Details
Published in:Science China. Technological sciences 2023-03, Vol.66 (3), p.830-840
Main Authors: Hao, Ning, Song, YiHeng, Chen, JinXiang, He, ChaoChao, Li, YinSheng
Format: Article
Language:English
Subjects:
Basalt
Beetles
Composite materials
Composite structures
Composition
Compressive strength
Deformation
Energy absorption
Engineering
Epoxy resins
Failure modes
Fiber composites
Fiber reinforced polymers
Finite element method
Mechanical properties
Polyvinyl chloride
Specific energy
Wall thickness
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Summary:The compressive mechanical properties, failure modes and foam filler strengthening mechanism and effect of a short basalt fiber-reinforced epoxy resin composite grid beetle elytron plate with a polyvinyl chloride (PVC) foam-filled core (GBEP fc ) are investigated via compression experiments and the finite element method. The results are compared with those of a grid plate (GP fc ) with the same wall thickness as the GBEP fc . Additionally, a fully integrated preparation method and process are developed for the GBEP fc , with a material composition that is close to the structure and composition of the organism. Increases of more than 20% in the specific compressive strength and specific energy absorption of the GBEP fc relative to the GP fc are ascertained. The foam provides a constraining force for the fiber composite structure; consequently, the trabeculae and honeycomb walls of the core transition from a lower-order deformation that easily occurs to a higher-order deformation that occurs less readily. The interaction between the core composite structure and PVC foam is described. The GBEP fc developed in this paper is simple in structure and easy to prepare, and the material composition is close to biological prototypes and materials used in practical engineerings, which lays a foundation for the application of beetle elytron plates.
ISSN:1674-7321
1869-1900
DOI:10.1007/s11431-022-2171-0