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논문 기본 정보

자료유형
학술대회자료
저자정보
윤재원 (지엠테크니컬센터코리아) 이병하 (지엠테크니컬센터코리아) 강병권 (지엠테크니컬센터코리아)
저널정보
한국자동차공학회 한국자동차공학회 추계학술대회 및 전시회 2019년 한국자동차공학회 추계학술대회 및 전시회
발행연도
2019.11
수록면
112 - 115 (4page)

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This paper introduces the process of evaluating the durability of the hub of a torsional vibration damper (TVD) using “Scaling & Superimposing” method. TVD is an essential part used to absorb the torsional vibration resonance energy of the crankshaft and to reduce the torsional vibration magnitude when the engine is running. Such TVDs generally consist of a hub, an inertia ring, and an elastomer. The hub is bolted to the front end of the crankshaft and subjected to a combination of static and dynamic loads. If they exceed the material limit of the hub, the hub breaks, leading to failure of the crankshaft. Therefore, the TVD hub must be designed faithfully for the purpose of reducing the torsional vibration of the crankshaft and must also have sufficient resistance for the safety of the crankshaft. The Scaling & Superimposing method used in this analysis can be divided into two areas: stress analysis by a static load and stress analysis by a dynamic load. In this case, the static load refers to the interference between the hub and the crankshaft nose that is generally applied when assembling the TVD and the tightening load of the TVD bolt. And in order to analyze the stress due to the dynamic behavior of the crankshaft, it is necessary to grasp the crankshaft displacement information first. This can be obtained through cranktrain dynamic analysis, which consists of displacement information for each angle during the crankshaft rotation period (typically 720 degrees for 4 cycle IC engine) and then the stress analysis under dynamic behavior can be performed. However, because it requires too much analysis resources, the scaling technique is used for more efficient and simpler analysis. After the two kinds of stress analyses were completed, the results were superimposed to calculate the final mean stress and amplitude stress on the hub. By comparing this with material strength of TVD hub, a safety factor for durability evaluation was generated.

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Abstract
1. 서론
2. TVD 허브에 대한 응력 해석
3. TVD 허브에 대한 내구성 평가
4. 결론
References

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