基于有限元方法的船舶主推进器区域结构强度分析

Main propulsion regional structure strength analysis base on finite element method

随着国内运输船日趋大型化、高速化,大型双桨双舵船舶的应用越来越广泛。本文分析双桨双舵船舶的特点,提出适合国内建造大型双桨双舵船舶主推进区域结构强度分析方法。在推进器不同推进角度和推进速度情况下,推进器所受的力进行有限元分析,对推进器区域船体外板、各层平台及肋骨等强力构件的受力进行研究,并与船级社规范对比研究,保证船体的基本构件稳定性和刚度上的要求从而为我国大型双桨双舵船舶的建造提供一些可行性的思路。

With the increasingly wide application of the large domestic carrier, high speed, large ship twin rudder paddle is application more and more widely, we analyze the characteristics of twin rudder paddle ship. Based on it, this pa- per proposes the structure strength analysis method of main propulsion area for building the large twin rudder paddle. Under the different angle and velocity of propeller propulsion, we analyze the propeller force with finite element method, including the stress of the propeller area outside the hull plate, the layers of the stress of the platform and frame strength member. We also compare result with classification society rule, in order to ensure the stability and the stiffness on the hull of the basic building blocks, and provide some feasible ideas for constructing large twin rudder paddle ships of our country.