Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Effect of Strut Waviness on Structural Performance of Wire-Woven Bulk Kagome Cores

WBK 의 구조적 특성에 대한 와이어 굴곡 효과

  • Lee, Ki-Won (School of Mechanical System Engineering, Chonnam National Univ.) ;
  • Kang, Ki-Ju (School of Mechanical System Engineering, Chonnam National Univ.)
  • 이기원 (전남대학교 기계기스템공학부) ;
  • 강기주 (전남대학교 기계기스템공학부)
  • Received : 2011.04.18
  • Accepted : 2011.07.04
  • Published : 2011.09.01
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Abstract

Since the mechanical strength and stiffness of wire-woven bulk Kagome (BK) have been theoretically estimated by assuming that WBK is composed of straight struts, the analytical solutions occasionally give substantial errors as compared with the experimental results. The struts of WBK are helically formed, which results in errors in the estimations In this study, for accurately predicting the mechanical properties of WBK, the effects of waviness and brazed part are taken into account for estimating the strength and stiffness of WBK. The results are compared with the measured experimental results and the results estimated by a finite element analysis performed on a unit cell under periodic boundary conditions (PBC).

기존의 WBK(와이어 직조 카고메)의 기계적 강도와 강성은 WBK 를 구성하는 요소가 반듯하다는 가정 아래에서 계산되었다. 실제 WBK 의 요소는 3 차원 나선형상을 이루고 있어 계산된 이론 해와 실험 결과값과 차이를 보인다. 이번 연구에서는 정확한 WBK 의 기계적 강도와 강성을 위해 하나의 트러스 요소의 굴곡 효과와 브레이징 접합 부를 고려하여 계산하였다. 또한 예측한 이론 해의 검증을 위한 경계주기조건(PBC) 유한요소해석을 수행하여 실험 결과값과 비교 분석하였다.

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References

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