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Damage Instability and Transition From Quasi-Static to Dynamic Fracture.
| 题名： | Damage Instability and Transition From Quasi-Static to Dynamic Fracture. |
| 作者： | Davila, C. G. |
| 关键词： | Damage assessment, Stability, Fracture mechanics, Failure analysis, Degradation, Crack arrest, Griffith crack, Continuum modeling, Position (location), Fracture strength, Structural failure, Crack initiation, Crack propagation |
| 摘要： | In a typical mechanical test, the loading phase is intended to be a quasi-static process, while the failure and collapse is usually a dynamic event. The structural strength and modes of damage can seldom be predicted without accounting for these two aspects of the response. For a proper prediction, it is therefore essential to use tools and methodologies that are capable of addressing both aspects of responses. In some cases, implicit quasi-static models have been shown to be able to predict the entire response of a structure, including the unstable path that leads to fracture. However, is it acceptable to ignore the effect of inertial forces in the formation of damage? In this presentation we examine aspects of the damage processes that must be simulated for an accurate prediction of structural strength and modes of failure. |
| 总页数： | Davila, C. G. |
| 报告类型： | 科技报告 |
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