- 會議論文
A Study of Bilinear Vibrational Behavior of Cracked Structures
並列摘要
Cracks may generally result in the variation of structural stiffness and hence enable structures to vibrate nonlinearly. In order to understand the vibrational behavior of crack structures accurately, the study proposes a general and efficient algorithm based on the finite element assumptions and the breathing crack theory. All formulae are derived from the time domain properly and may apply to the overall bilinear motion cycle completely. The contact effect is also considered by introducing the degree of penetration on the cracked surface. By assessing the variation of natural frequencies in crack open and closed modes, changes in the dynamic characteristics of cracked structures are investigated. The changes in dynamic characteristics can be measured and lead to an identification of the structural changes which eventually might lead to the detection of a structural flaw.
延伸閱讀
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- 侯雨利（2011）。Dynamic Analysis of Non-collinear Cracks under Anti-plane Loading〔碩士論文，國立臺灣大學〕。華藝線上圖書館。https://doi.org/10.6342/NTU.2011.10916