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首页> 外文会议>International conference on port and ocean engineering under arctic conditions >STRUCTURAL VIBRATION ANALYSIS ON THE POLAR SUPPLY AND RESEARCH VESSEL THE S.A. AGULHAS Ⅱ IN ANTARCTICA
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STRUCTURAL VIBRATION ANALYSIS ON THE POLAR SUPPLY AND RESEARCH VESSEL THE S.A. AGULHAS Ⅱ IN ANTARCTICA

机译：南极极地沙丘藻类Ⅱ的极地供应和研究容器的结构振动分析

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The Polar Supply and Research Vessel the S.A. Agulhas Ⅱ plays a key role in the South African National Antarctic Program, and is relied upon for logistical and research support in Antarctica and the Southern Ocean. The vessel is exposed to various ice and open water conditions and encounters a number of different excitation mechanisms which are capable of causing structural fatigue. To this end full scale measurements were conducted during a 78 day voyage from Cape Town to Antarctica during 2013/2014 to investigate the effect of vibration on the vessel's structure. Nineteen vibration measurement channels were recorded on the hull structure and five on the superstructure in order to determine the global vibration response of the vessel. The structure is found to be most affected by vertical vibration during open water navigation, with a maximum peak velocity of 338 mm/s in 8 m swells. Comparatively, structural vibration levels in open water are greater than those measured during ice navigation. According to Germanischer Lloyd's (2001) ship vibration guidelines, structural fatigue as a result of vibration is found to reach levels where damage is possible in the stern and were damage is probable in the bow. The vibration levels with potential to cause fatigue damage were measured in 8 m swells during open water navigation. This calls for further investigations into the effects of the duration at these exposures, materials of construction, structural details in the affected areas, welding processes and environmental conditions. It is recommended that further investigations be conducted into the effects of hybrid ice-open water designs on vibration response.
机译：S.A. AgulhasⅡ极地供应和研究船在南非国家南极计划中起着关键作用，并在南极和南大洋得到后勤和研究支持。该船暴露于各种冰和开阔水域条件下，并遇到许多不同的激发机制，这些激发机制都可能导致结构疲劳。为此，在2013/2014年从开普敦到南极洲的78天航程中，进行了满量程测量，以研究振动对船​​舶结构的影响。为了确定船舶的整体振动响应，在船体结构上记录了19条振动测量通道，在上部结构上记录了5条通道。发现该结构在开放水域航行期间受垂直振动的影响最大，在8 m膨胀中的最大峰值速度为338 mm / s。相比之下，露天水域的结构振动水平要比冰航行期间测得的振动水平大。根据Germanischer Lloyd（2001）的船舶振动准则，由于振动而导致的结构疲劳被发现达到船尾可能损坏而船首可能损坏的程度。在开阔水域航行期间，在8 m的浪涌中测量了可能引起疲劳破坏的振动水平。这就需要进一步研究这些暴露时间，结构材料，受影响区域的结构细节，焊接工艺和环境条件的影响。建议进一步研究混合冰开水设计对振动响应的影响。

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