Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
권호 표지

Elastic-Plastic Analysis of Three Point Bending Tests for 3D Circular Braided Glass Fiber Reinforced Composites

3차원 원형 브레이드 유리 섬유 강화 복합 재료를 이용한 3점 굽힘 실험의 탄소성 해석

  • Ryou Hansun (School of Materials Science and Engineering, Seoul National University) ;
  • Kim Ji Hoon (School of Materials Science and Engineering, Seoul National University) ;
  • Lee Myoung-Gyu (Department of Materials Science and Engineering, Ohio State University) ;
  • Kim Dongun (School of Materials Science and Engineering, Seoul National University) ;
  • Lee Hyung Rim (School of Materials Science and Engineering, Seoul National University) ;
  • Chung Kwangsoo (School of Materials Science and Engineering, Seoul National University) ;
  • Youn Jae Ryoun (School of Materials Science and Engineering, Seoul National University) ;
  • Kang Tae Jin (School of Materials Science and Engineering, Seoul National University)
  • Published : 2005.10.01
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Abstract

In order to describe the mechanical behavior of highly anisotropic and asymmetric materials such as fiber reinforced composites, the elastic-plastic constitutive equations were used based on the recently developed yield criterion and hardening laws. As for the yield criterion, modified Drucker-Prager yield surface was used to represent the orthotropic and bi-modular (asymmetric) properties of composite materials, while the anisotropic evolution of back-stress was used to account for the hardening behavior. Experimental procedures to obtain the material parameters of the hardening laws and yield surface are presented for 3D braided glass fiber reinforced composites. For verification purposes, finite element simulation results based on the proposed constitutive laws have been compared with measurements for the three point bending tests.

Keywords

References

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