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자료유형
학술대회자료
저자정보
저널정보
한국자동차공학회 한국자동차공학회 춘 추계 학술대회 논문집 한국자동차공학회 2006년 추계학술대회 논문집 Volume III
발행연도
2006.11
수록면
1,312 - 1,318 (7page)

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초록· 키워드

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In order to find out a physical quantity which controls the fatigue life of a structure and to predict the fatigue life of tires, a finite element simulation methodology to use the crack energy density (CED) and the virtual crack closure technique (VCCT) was proposed and applied to three different tires of a similar size. The VCCT was applied to a simple tensile specimen with a crack, and a correct usage of it was determined from comparison of the simulation result with a theoretical solution. CED was calculated to predict the location of a crack initiation, and VCCT was used to obtain the strain energy release rate (SERR) at the tip of an initiated circumferential crack. Finite element simulations showed that SERR oscillated in the circumferential direction with its minimum occurring just before the contact zone and its maximum occurring just after the center of the contact zone, and SERR was affected significantly by the frictional force acting on the crack surface. In addition, a durability test was conducted to measure the fatigue life of the three tires. The comparison of SERR values with the test data revealed that the fatigue life increased as the amplitude of SERR decreased or as the R-ratio of SERR increased.

목차

Abstract
1. INTRODUCTION
2. Physical Quantities for the Crack Initiation and Crack Growth
3. Application to Tires
4. CONCLUSION
References

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