Composites Research

The Korean Society for Composite Materials (한국복합재료학회)
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Comparison of the Stress Concentration Factors for GFRP Plate having Centered Circular Hole by Three Resource-Conserving Methods

  • Gao, Zhongchen (College of Engineering, Seoul National University) ;
  • Park, Soo-Jeong (Department of Material Engineering, Graduate School, Korea Maritime and Ocean University) ;
  • Kim, Yun-Hae (Department of Mechanical Engineering, Korea Maritime and Ocean University)
  • Received : 2016.12.01
  • Accepted : 2016.12.29
  • Published : 2016.12.31
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Abstract

Fiber reinforced plastic (FRP) composites have drawn increasing attentions worldwide for decades due to its outstanding properties. Stress concentration factor (SCF) as an essential parameter in materials science are critically considered in structure design and application, strength assessment and failure prediction. However, investigation of stress concentration in FRP composites has been rarely reported so far. In this study, three resource-conserving analyses (Isotropic analysis, Orthotropic analysis and Finite element analysis) were introduced to plot the $K_T^A-d/W$ curve for E-glass/epoxy composite plate with the geometrical defect of circular hole placed centrally. The plates were loaded to uniaxial direction for simplification. Finite element analysis (FEA) was carried out via ACP (ANSYS composite prepost module). Based on the least squares method, a simple expression of fitting equation could be given based on the simulated results of a set of discrete points. Finally, all three achievable solutions were presented graphically for explicit comparison. In addition, the investigation into customized efficient SCFs has also been carried out for further reference.

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References

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