气垫船结构动力分析

DYNAMIC ANALYSIS OF HOVERCRAFT STRUCTURES

本文提出了气垫船船体及动力装置系统振动特性分析方法：用正交异性曲壳单元计算气垫船的主要承力结构──浮箱的振动特性；用空间梁单元计算动力装置系统振动特性；再用动力子结构方法计算两者之间的弹性耦合振动。用这种分析方法对一全垫升气垫船船体总振动进行了研究。已有的实测结果表明了该法的可行性和正确性。

In this paper, a method is presented for dynamic analysis of hovercraft and it's machinery and propulsion system. The dynamic behavior of the main hull structure of the hovercraft (buoyancy tank) is calculated by using the curved orthotropic shell element. The dynamic behavior of the machinery and propulsion system is calculated by using 3--dimensional beam element. Dynamic substructure method is introduced to analyse the coupled vibration of the main hull structure and the machinery and propulsion system. The dynamic analysis of a complete hovercraft is thus proceeded and the feasibility and the accuracy of the method offered are verified by a ready-made measurement.