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자료유형
학술대회자료
저자정보
저널정보
한국자동차공학회 한국자동차공학회 춘 추계 학술대회 논문집 한국자동차공학회 2007년 춘계학술대회 논문집 Volume III
발행연도
2007.6
수록면
1,441 - 1,446 (6page)

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초록· 키워드

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Reliability or uncertainty problems occurring due to uncertain geometric or material parameters in the fatigue life prediction are nowadays actively considered in the design of mechanical components undergoing repeated loading conditions. Recently, Dimension Reduction Method combined with Kriging approximation (named as K-DR) was proposed by the authors, which is to calculate statistical moments using an additive decomposition of a multi-dimensional response function into multiple one-dimensional functions. The function is then approximated by Kriging interpolation technique using the properly chosen sample points. Once the moments are obtained, type of statistical PDF shape is identified using the Pearson system. The method, which is more tractable for its sensitivity-free nature and providing the response PDF in a few number of analyses, is adopted in this study for the reliability analysis of high-cycle fatigue life problems. The S-N parameters are not always available due to the limited experimental data, from which the determination of the probability distribution is not easy. In this case, a family of curves representing confidence bound which is called P-S-N curve are constructed from the regression analysis. Reliability analysis is then conducted at each deterministic S-N curve with different confidence level. The advantage of the K-DR is that once a set of responses are available at the chosen sample points, all the cases mentioned above can be efficiently studied without any additional response evaluations, which would be cumbersome if the MPP search methods are employed. The proposed method is demonstrated with the fatigue design problem of knuckle. The resulting information is of great practical value and will be very helpful for the design engineers in making decision in the fatigue design process.

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Abstract
1. 서론
2. 크리깅기법을 이용한 차원감소법
3. 제한된 실험 결과로 피로 신뢰성 해석
4. 예제 함수
5. 너클의 피로수명 신뢰성 해석
6. 결론
References

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