12. Study on Fast Fracture and Crack Arrest
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概要
- 論文の詳細を見る
Since the experimentally proven inadequacy of static approximation to fast fracture and crack arrest was brought to light, a lot of structural engineers and researchers are interested in dynamic aspects of fast fracture and crack arrest. This paper gives firstly some numerical results obtained with the use of finite difference method to show its usefulness as a tool to analyze dynamic fracture mechanics problems. The results of numerical computation compare well with the corresponding analytically solved solutions in terms of stress, strain and energy flow. Then the experimental results of brittle crack propagation and arrest on structural steels are analyzed using finite difference method. The material toughness against fast fracture is defined is a function of temperature and crack velocity. Using the thus defined fracture toughness, crack propagating behaviors are predicted through numerical simulations for some limited cases. This implies a possibility to develop simple methods for crack arrester design.
- 社団法人日本船舶海洋工学会の論文
著者
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Machida Susumu
University Of Tokyo
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YOSHINARI Hitoshi
University of Tokyo
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Teramoto Tokuo
University Of Tokyo
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KANAZAWA Takeshi
University of Tokyo
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