申常云 祝文倩



摘 要:根据用户在给定海况条件下安全收放工作艇的需求,对某船所配设的工作艇吊艇架进行选型,并参照规范要求进行设计布置;采用ANSYS AQWA软件,考虑船与工作艇的耦合作用对其在给定海况条件下的运动幅值等进行动态仿真分析,得出吊艇架具备安全作业的条件、作业时间窗口等;经实船试验验证,满足用户及规范、法规的要求。
关键词:吊艇架;工作艇;耦合作用;动态仿真分析
中图分类号:U667.6 文献标识码:A
Abstract: Based on the requirement of the users of safely stowing & releasing of workboat under the given sea condition, the type selection of boat davits for a ship and layout design according to the rules are carried out, considering the coupling effect between the ship and workboat, the dynamic simulation analysis of the motion amplitude under the given sea condition in a certain time domain is conducted by using the ANSYS AQWA software, and finally the working conditions & job time window for the operation security of safely stowing and releasing of workboat by boat davit are obtained. Verified by the test of stowing and releasing workboat of the actual ship, the selected workboat davit meets the requirements of the users, rules and regulations.
Key words: Boat davit; Work boat; Coupling effect; Dynamic simulation analysis
1 前言
對于需要在风浪海况条件较高的水域进行收放工作艇作业的船舶,采用常规的单吊点起吊方式的艇架装置难以满足作业需求;另一方面,现行法规、规范对艇的条文主要是关于救生艇的配置问题,其关注点除乘员数量外,则是在偏静态条件下艇的存放、登乘、降落和回收,以及母船的纵倾和横倾状态;对于以工程作业为主的工作艇的配置,以及在某种海况条件下需具备什么样的收放工作艇的能力则没有给出衡准规定,相关的设计手册对这类情形也未给出明确的指引和方法。
结合作业方的实际需求,了解收放作业时工作艇的横摇、纵摇、摆幅、工作窗口等关键控制点,在设计选型中考虑作业方的海况作业能力需求和法规对母船的纵、横倾角的限值,综合考虑船与工作艇的动态耦合作用,采用动态的仿真分析来分别评估单吊点和双吊点艇架收放工作艇的作业状态,以便得到一个合适可行的工程结果。……