新型深水工程勘察船振动预报分析

作为深水油田开发勘探装备的新型深水工程勘察船，结构设计必须充分考虑预防结构有害振动的产生，以满足深水勘察的作业要求。采用三维有限元整船建模，对新型深水工程勘察船进行了船体结构的振动计算分析，包括船体总振动、上层建筑、机舱、井架、桅杆、直升机平台等局部结构振动的固有频率计算以及总振动响应预报。分析计算结果对优化船体结构设计提供了必要的技术支撑。

Evaluation of Structure Vibration for Developing of New Deepwater Engineering Survey Vessel

The vibration severity should be prevented during the structure design in the developing of the new deepwater engineering survey vessel in order to meet the requirement of the survey operation in deep sea. For this vessel, structure vibration analysis was carried out with FE method, including the calculation of natural frequencies of global and local structure such as superstructure, engine room, derrick, mast and helicopter deck etc. and the evaluation of the response of global hull vibration. The results of vibration analysis served as an important technical support for the structure optimization.