Composites Research

The Korean Society for Composite Materials (한국복합재료학회)
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Study on Evaluation Method of Structural Integrity for Cone-Type Composite Lattice Structures with Hexagonal Cell

육각 격자구조를 갖는 콘형 복합재 격자구조체의 구조안전성 평가 기법 연구

  • Im, Jae-Moon (Graduate School of Mechanical Engineering, Hanbat National University) ;
  • Kang, Seung-Gu (Graduate School of Mechanical Engineering, Hanbat National University) ;
  • Shin, Kwang-Bok (Department of Mechanical Engineering, Hanbat National University) ;
  • Lee, Sang-Woo (Defense & Aerospace Division, Hankuk Fiber Group)
  • Received : 2018.08.01
  • Accepted : 2018.08.24
  • Published : 2018.08.31
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Abstract

In this paper, evaluation method of structural integrity for cone-type composite lattice structures with hexagonal cell was conducted. A finite element analysis was used to evaluate the structural integrity of cone-type composite lattice structure. The finite element model for evaluation of structural integrity was generated using solid element. In order to consider the difference in mechanical properties between intersection and non-intersection part, the mechanical properties were applied considering the fiber volume fraction of each part. Compression test of cone-type composite lattice structure were conducted for verification of evaluation method of structural integrity. The analysis result showed 2% errors in displacement and good agreement with test result.

본 논문에서는 콘형 복합재 격자구조체의 구조안전성 평가 기법에 대해 연구를 수행하였다. 콘형 복합재격자구조체의 구조안전성 평가는 유한요소해석을 통해 수행되었다. 구조안전성 평가를 위한 유한요소모델은 솔리드 요소를 사용하여 생성하였다. 섬유 교차부와 비교차부의 물성 차이를 고려하기 위해 섬유 체적률을 고려한 기계적 물성을 적용하였다. 구조해석 기법의 검증을 위해 콘형 복합재 격자구조체의 압축 시험을 수행하였다. 시험과 해석의 비교 결과, 약 2%의 변위 오차가 발생하여 잘 일치하는 것을 확인하였다.

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