한국정밀공학회지 (Journal of the Korean Society for Precision Engineering)

  • 제30권2호
  • /
  • Pages.231-235
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  • 2013
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  • 1225-9071(pISSN)
  • /
  • 2287-8769(eISSN)
한국정밀공학회 (Korean Society for Precision Engineering)
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다축 하중 구조물의 동적 피로수명 예측

The Prediction of Dynamic Fatigue Life of Multi-axial Loaded Structure

  • 윤문영 (인제대학교 기계공학과) ;
  • 김경호 (인제대학교 기계공학과) ;
  • 박장수 (계양전기) ;
  • 부광석 (인제대학교 고안전차량핵심기술연구소) ;
  • 김흥섭 (인제대학교 고안전차량핵심기술연구소)
  • 투고 : 2012.10.12
  • 심사 : 2012.11.28
  • 발행 : 2013.02.01
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초록

The purpose of this paper is to compare with estimation of equivalent fatigue load in time domain and frequency domain and estimate the fatigue life of structure with multi-axial vibration loading. The fatigue analysis with two methods is implemented with various signals like random, sinusoidal signals. Also an equivalent fatigue life estimated by rainflow cycle counting in time domain is compared with results estimated with probability density function of each signal in frequency domain. In case of frequency domain, equivalent fatigue life can estimate through Dirlik's method with probability density function. And the work proposed in this paper compared the fatigue damage accumulated under uni-axial loading to that induced by multi-axial loading. The comparison is preformed for a simple cantilever beam, which is exposed to vibrations of several directions. For verification of estimation performance of fatigue life, results are compared to those of FEM analysis (ANSYS).

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참고문헌

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