• 대한기계학회:학술대회논문집
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• 대한기계학회 2000년도 춘계학술대회논문집A
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• pp.159-164
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• 2000

The fracture behaviors of aluminum foils and sheet papers were analyzed on the basis of linear elastic fracture mechanics(LEFM). The fracture loads of the similarly shaped specimens were calculated by dimensional analysis. The actual fracture loads were measured using the simple tension equipment. The predicted fracture loads were compared with the experimental results.

• 한국기계가공학회지
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• 제7권2호
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• pp.16-22
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• 2008

This study was analyzed dynamically by finite element method about the results of experiments which materials were applied by dynamic load. And they were compared with each other as the simulation data applied onto dynamic impact velocities of 6.4, 16.7 and 18.47m/s. The crack energy release rate, von-Mises stress and the displacement according to the load applied by block were calculated numerically by computer. As the numerical simulation data of specimen analyzed in this study approached the experimental data, the inspection of this specimen model suggested in this paper could be reasonable for the numerical simulation.

• 한국산학기술학회논문지
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• 제8권3호
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• pp.421-426
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• 2007

본 연구는 이종재료의 이중외팔보 시험편들을 충격하중으로 실험한 결과들에 대하여 유한요소법으로 동적해석을 하였다. 충격 속도로서는 6.4 및 18.47 m/s를 적용하였고 그 실험 결과와 시뮬레이션 데이터로 상호 비교하였다. 크랙 에너지 해방율과 블록의 힘 및 변형을 컴퓨터로 수치 해석할 수 있었다. 본 논문에서 해석된 시험편의 수치해석 데이터로 실험 데이터에 근접시키게 되는 검증을 함으로서 충격 실험에 대한 수치적 시뮬레이션을 하기에 타당함을 알 수 있었다.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2004년도 추계학술대회
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• pp.172-177
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• 2004

Fatigue life prediction is based on fracture mechanics and database which is established from experimental method. Rubber material also uses the same way for fatigue life prediction. But the absence of standardization of rubber material, various way of composition by each rubber company and uncertainty of fracture criterion makes the design of fatigue life by experimental method almost impossible. Tearing energy which has its origin in energy release rate is evaluated as fracture criterion of rubber material and the applicability of fatigue life prediction method are considered. The system of measuring tearing energy using the principal of virtual crack extension method and fatigue life prediction by the minimum number of experiments are proposed.