由于气垫船的船型特点、运行原理等与常规船相比有很大区别，使得其速度较常规船高出很多，此外还会搭载高转速发动机、高转速空气螺旋桨等，这就使得气垫船振动问题尤为突出，可能引起强度、航行安全、舒适性等问题，因此确定振动源并计算典型位置的振动特性尤为重要。本文选取气垫船垫升主机及推进主机基座这一典型结构，利用有限元法，考虑多种激振力在同一位置处的瞬态响应，求解速度时历的均方根值，并与测试数据进行对比。结果表明考虑多种激振力同时作用的效果与实际测试结果相近，结果可靠，可以借鉴应用于气垫船振动特性的分析研究。
Due to the great difference between hovercraft and conventional craft in ship type characteristics and operation principle, the speed of hovercraft is much higher than that of conventional craft. Also, it is equipped with a high-speed engine and high-speed air propeller, which makes the vibration problem of hovercraft particularly prominent, which can cause strength, navigation safety, comfort, and other problems. Therefore, the vibration source is determined and the typical position is calculated The vibration characteristics of the device are particularly important. In this paper, the typical structure of the main engine and the base of the propulsion engine of the hovercraft is selected. The transient response of various exciting forces at the same position is considered by using the finite element method. The root means the square value of the velocity time history is solved and compared with the test data. The results show that the effect of considering multiple excitation forces at the same time is similar to the actual test results, and the results are reliable, which can be used for reference in the analysis and research of the vibration characteristics of hovercraft.
2021,43(7): 40-44 收稿日期：2021-04-09
DOI：10.3404/j.issn.1672-7649.2021.07.008
分类号：U674.943
作者简介：诸葛凌波(1987-),工程师,研究方向为船舶总体设计
参考文献：
[1] 中国船级社. 海上高速船入级及建造规范[S]. 北京:人民交通出版社, 2015.
[2] 徐伟. 全垫升式气垫船总振动计算方法研究[D]. 大连:大连理工大学, 2018.
[3] 李建彰. 全垫升气垫船结构强度评估及局部振动分析[D]. 哈尔滨:哈尔滨工程大学, 2014.
[4] 中国人民解放军总装备部. 舰船通用规范 1组[S], GJB 4000-2000, 2000.
[5] 中国国家标准化管理委员会. 船舶机舱辅机振动烈度的测量和评价[S], GB-T 16301-2008, 2008.
[6] 孙迪. 全垫升式气垫船总振动简化分析方法研究[D]. 大连:大连理工大学, 2020.
[7] 尤矢勤, 恽良. 气垫船的振动问题[J]. 舰船科学技术, 1990(6):1-11
[8] 中国船级社. 钢质海船入级及建造规范[S]. 北京:人民交通出版社.
[9] 曲鹏. 小型气垫船结构强度有限元分析研究[D]. 哈尔滨:哈尔滨工程大学, 2013.
[10] 王绍明, 姚征. 全垫升气垫船内部流场的数值模拟与改进[J]. 船舶力学, 2007(2):179-184
[11] 姚熊亮. 船体振动[M]. 哈尔滨:哈尔滨工程大学出版社, 2004.
