한국추진공학회:학술대회논문집 (Proceedings of the Korean Society of Propulsion Engineers Conference)
- 한국추진공학회 2005년도 제24회 춘계학술대회논문집
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- Pages.47-52
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- 2005
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- 1975-342X(pISSN)
고체추진기기의 고장분포 기반의 균열전파 모델: 실험과의 비교
Failure distribution based crack propagation in solid propellant container: Comparison with experiment
초록
이 논문은 열폭발 실험에서의 열적, 화학적, 기계적 행동의 결과에 대한 3차원 모델 결과를 나타낸다. 폭발이 관찰되기 전까지 제한된 고 폭발물은 시간당
We present a simple idea to simulate dynamic fracture and fragmentation of a propulsion system exposed to an extreme condition, such as a fire. The system consists of energetic materials confined in a steel cylinder. The strain failure model of the confinement is a modified Johnson-Cook model with a statistical failure distribution. By using the size distribution data of the fragments from the thermal explosion tests, the failure strain distribution can be empirically obtained and then entered into the model. The simulated fracture and fragment sizes are compared with the experimental records.
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