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溶接構造物の振動解析のためのモデル化 ～1次および2次振動を考慮した場合～ Modeling of Welded Structure for Dynamic Analysis (Considering First and Second Vibration Modes) 青木, 繁 アオキ, シゲル Aoki, Shigeru Vibration Welding Damping Ratio Natural Frequency Lumped Mass Model Proportional Damping P(論文) Welding is widely used for construction of many structures. The dynamic characteristics of the welded structure are important for design of machines, buildings and so on. The effect of welding on the dynamic characteristics is investigated. In this paper, analytical models of welded structure based on experiment are examined. First, the dynamic characteristics of welded structure for the first and the second vibration mode are obtained from experiment using beam type welded specimens. Second, analytical models which represent experimental results are examined. Two models are considered and parameters are estimated based on the experimental results. One is the two-degree-of-freedom lumped mass model is considered. The damping ratios and the natural frequencies of each system are estimated. The other is the proportional damping model which is used for the finite element method is examined. Coefficients of the model are estimated. 2014-03-01 jpn departmental bulletin paper https://metro-cit.repo.nii.ac.jp/records/160 AA12210629 東京都立産業技術高等専門学校研究紀要 Research reports of Tokyo Metropolitan College of Industrial Technology 8 48 51 https://metro-cit.repo.nii.ac.jp/record/160/files/KJ00009651764.pdf application/pdf 1.3 MB 2014-03-01