Publication: Performance evaluation of different fiber volume fraction on hybrid kenaf/glass fiber composite by finite element analysis
Loading...
Date
2024-07-01
Authors
Siti Mariyam Binti Norzulaimi
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
This study evaluates the mechanical performance of hybrid kenaf/glass fiber composites through finite element analysis (FEA). The research aims to bridge the gap in understanding the mechanical properties of these composites, essential for their application in sustainable engineering solutions. The methodology involves a multi-phase approach. Initially, a comprehensive modelling phase is conducted using ABAQUS software to create detailed representations of the Split Hopkinson Pressure Bar (SHPB) test components. This ensures accurate simulation of the composite materials' mechanical behavior. Subsequently, the SHPB test phase replicates impact loading conditions to assess the dynamic response. Detailed stress concentration, distribution, and propagation analyses are performed to understand how different fiber volume fractions affect mechanical properties. The final phase involves result analysis, where simulation data are processed to generate stress-strain graphs, providing insights into the composites' performance. Results indicate that fiber volume fractions significantly influence the mechanical properties of hybrid composites. Six different models with varying kenaf and glass fiber ratios were analyzed. Model 6, with 48% kenaf and 12% glass, demonstrated superior mechanical properties, exhibiting the highest Young's Modulus of 334.56 GPa and a failure stress of 50.90 MPa. Among the materials, glass fiber is the main contributor to stress concentration due to its high stiffness. Stress propagation in all models follows a pattern where glass fibers hold the load initially, transfer it to kenaf fibers, and finally to the matrix. Initial distortion typically occurs in the matrix at the edge of the specimen, especially in models containing glass fibers. In conclusion, the research identifies the optimal fiber volume fraction for hybrid kenaf/glass composites, providing insights for designing sustainable composite materials with enhanced performance. Future research should focus on experimental validation and exploring the effects of higher strain rates to further optimize the composites.