A Study on the Damping Charactors in the Dynamic Structual Responce in Ships

船舶动态结构响应中的阻尼特性研究

• 批准号: 04650394
• 负责人: FUNAKI Toshihiko
• 金额: $ 1.15万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 1993
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-04650394/
• 关键词: Ship construction; Beam-Frame elements; Experimental research; Damping Charactors of Steel; Simuration for Impact Responce; 船体; 動的構造応答; 衝撃荷重; 減衰係数; 時刻暦

It is very important to estimate the the damping charactors of the structures, in order to analyze exactly the dynamic strucural responce, for example the vibration, the collison and the bow flare damages by wave impact loads etc. In this research, frame-structure models were impacted by impact hammer, and the relations between their damping characters and vibration modes or frequencies were obtained. Then the system to calculate the impact responce was developed, constructing a proportinal damping model into the equations of motion for Euler Beam. Using the damping charactos obtained, the simulation results for impact responce, were agreed with experimantal ones very well

估计结构的阻尼特性对于准确分析结构的动力响应，例如振动、碰撞和波浪冲击载荷引起的船首外展损伤等非常重要。在本研究中，框架结构模型受到冲击锤的冲击，得到了其阻尼特性与振动模式或频率之间的关系。然后开发了计算冲击响应的系统，在欧拉梁的运动方程中构建了比例阻尼模型。利用获得的阻尼特性，冲击响应的模拟结果与实验结果非常吻合

项目成果

船木俊彦 他: "鋼材の減衰性能の推定に関する研究" 関西造船協会誌. 222. (1984)

Toshihiko Funaki等人：“钢材阻尼性能评估的研究”关西造船协会杂志222。（1984年）

船木俊彦 他: "鋼材の減衰性能の推定に関する研究" 関西造船協会誌. (発表予定). (1994)

Toshihiko Funaki等人：“钢铁材料阻尼性能的评估”，关西造船协会杂志（待出版）。

Toshihiko FUNAKI et al: "A Study on the Damping Charactors of Steel Structures in the Dynamic Structual Responce" JOURNAL OF KANSAI SOSIETY OF NAVAL ARCHITECTS,JAPAN. Vol.222 (now in preparation). (1994)

Toshihiko FUNAKI 等人：“动态结构响应中钢结构阻尼特性的研究”日本关西造船学会杂志。