船体振动分析的实船验证及改进方案

Ship vibration onboard verification and improvemnet

船体振动有限元分析的方式已广泛应用于船舶结构设计之中,但在设计初期许多计算因素无法精确模拟,因此振动分析的结果与实船的最终状态可能存在一定偏差。本文以某型LNG船为实例,简要介绍船舶建造过程中,通过有限元检验振动分析结果的方式。以及船舶建造结束后,简单、可行的全船及局部振动性能改进方案。通过比较分析,得到经济可行的船舶减震方案。

Finite element analysis of ship hull vibration is widely used in ship design, but many calculate factors cannot be precisely simulated in the early design process, so the results may have some deviation. Examples on a LNG vessel,during the ship construction process, analyse vibration and test resultsin order to propose a simple, practical improvements after the ship bulid complete. By comparing the obtained resultsget a economically result.