水下圆柱壳低频激振的设计方法
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- 英文论文题名：The design method of exciting underwater cylindrical shell at low frequency
- 论文作者：刘永伟 ; 曹培政 ; 张峻铭 ; 商德江 ; 李琪
- 英文论文作者：LIU Yong-wei ; CAO Pei-zheng ; ZHANG Jun-ming ; SHANG De-jiang ; LI Qi ; Acoustic Science and Technology Laboratory ; College of Underwater Acoustic Engineering ; Harbin Engineering University
- 年：2016
- 作者机构：哈尔滨工程大学水声技术重点实验室水声工程学院;
- 论文关键词：水下圆柱壳 ; 低频激振 ; 蛙式打夯机 ; 设计方法
- 英文论文关键词：underwater cylindrical shell ; low frequency vibration ; Frog ramming machine ; design method
- 会议召开时间：2016-08-21
- 会议录名称：2016’中国西部声学学术交流会论文集
- 语种：中文
- 分类号：U661.44
- 学会代码：SXJS
- 会议名称：2016’中国西部声学学术交流会
- 会议地点：中国四川成都
- 主办单位：中国声学学会微声学分会、中国声学学会物理声学分会、陕西省声学学会、浙江省声学学会、山东省声学学会、上海市声学学会、黑龙江省声学学会、水声技术重点实验室、重庆市声学学会、西安市声学学会、四川省声学学会
- 学会名称：《声学技术》编辑部
- 页数：4
- 文件大小：465k
- 原文格式：D
- 会议级别：全国
摘要
水下圆柱壳是一种结构噪声源,广泛应用于各种理论模型的试验验证。目前,圆柱壳尺寸的越来越大,自身的质量也很大,在开展水声试验时,迫切需要一种大功率的激振器,以提高测试信噪比。同时,为研究圆柱壳的低频声辐射特性,该激振器还需具有低频激振的能力。蛙式打夯机是一种建筑、桥梁等行业普遍采用的地基夯实装置。它通过电动机、减速机构,带动一大质量的偏心块进行周期性旋转,从而完成夯实工作。本文借鉴蛙式打夯机的工作原理,建立了周期性旋转偏心质量块的数值计算模型,通过将该周期性旋转偏心质量块的激励力导入至圆柱壳模型中,实现了水下圆柱壳的低频激振,得到了其低频声辐射特性。研究结果为开展试验研究圆柱壳的低频声辐射特性提供了大功率低频激振器的设计方法,具有很重要的实践价值。
Underwater cylindrical shell is a structure sound source, and used to validate various kinds of theoretical models. Nowadays, the dimension of cylindrical shell is enlarged, so that the mass is enhanced. Therefore, an exciter with high power is need, especially when the experimental investigation is carried out. Meanwhile, in order to meet the demand of sound radiation from cylindrical shell at low frequency, the excitercan be vibrated at low frequency. Frog ramming machine is an rammed equipment, which is widely used in the architecture and bridges. The principle is that an eccentric mass block is rotated by the driving of electrical machine and gear change device. In the paper, the calculation model of a eccentric mass block with periodic rotation is built up. Then, the force of eccentric mass block is introduced into the numerical model of underwater cylindrical shell. The property of sound radiation from underwater cylindrical shell has been gotten. The results can provide some reference for the design of an exciter at low frequency in the research of sound radiation from underwater cylindrical shell. It is of significant value in the experimental investigation.
Underwater cylindrical shell is a structure sound source, and used to validate various kinds of theoretical models. Nowadays, the dimension of cylindrical shell is enlarged, so that the mass is enhanced. Therefore, an exciter with high power is need, especially when the experimental investigation is carried out. Meanwhile, in order to meet the demand of sound radiation from cylindrical shell at low frequency, the excitercan be vibrated at low frequency. Frog ramming machine is an rammed equipment, which is widely used in the architecture and bridges. The principle is that an eccentric mass block is rotated by the driving of electrical machine and gear change device. In the paper, the calculation model of a eccentric mass block with periodic rotation is built up. Then, the force of eccentric mass block is introduced into the numerical model of underwater cylindrical shell. The property of sound radiation from underwater cylindrical shell has been gotten. The results can provide some reference for the design of an exciter at low frequency in the research of sound radiation from underwater cylindrical shell. It is of significant value in the experimental investigation.
引文
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[7]严谨.水下复杂圆柱壳振动能量流和声辐射特性研究[D].武汉:华中科技大学博士学位论文,2006:2-26.YAN Jin.Characteristics of Power Flow and Sound Radiation in Submerged Complex Cylindrical Shells.[D]WU HAN:Huazhong University of Science and Ph D thesis,2006:2-26
[8]陈锐.蛙式打夯机的简单动力学分析[J].科技与创新,2015,(5):34.CHEN Rui.Simple analysis of the dynamics of frog rammer[J].Science and Technology&Innovation,2015,(5):34.
[9]林远东.偏心质量引起旋转系统振动的动力学研究[J].机械设计及制造,2008,(5):29-30.LIN Yuandong.Dynamics research of vibration due to eccentric mass in revolving mechanical system[J].Machinery Design&Manufacture,2008,(5):29-30.
[10]李兵,杨晓刚,林立.开阔水域条件下大尺度圆柱壳辐射声功率测量方法研究[J].第十五届船舶水下噪声学术讨论会论文集,2015:167-174.LI Bing,YANG Xiaogang,LIN Li.The investigation on measuring sound radiation power of large cylindrical shell in the free water field.The proceedings of the 15th ships noise symposium,2015:167-174.
[2]陈明,王斌,曹为午.水下复杂壳体结构在多源激励下的振动及声辐射特性研究[J].声学学报,2009,34(6):498-505.CHEN Ming,WANG Bin,CAO Weiwu.Research on vibration and acoustic radiation of the submerged complicated shell structure with multiple excitations[J].Acta Acustica,2009,34(6):498-505.
[3]白振国,俞孟萨.多层声学覆盖层复合的有限长弹性圆柱壳声辐射特性研究[J].船舶力学,2007,11(5):788-797.BAI Zhenguo,YU Mengsa.Sound radiation of finite composite cylindrical shells with multi-layers acoustic coating[J].Journal of Ship Mechanics,2007,11(5):788-797.
[4]陈美霞,徐鑫彤,魏建辉,等.非均匀圆柱壳振动及声辐射特性优化设计[J].船舶力学,2013,17(1-2):164-170.CHEN Meixia,XU Xintong,WEI Jianhui.Optimization design of vibro-acoustic behavior of non-uniform stiffened cylindrical shell[J].Journal of Ship Mechanics,2013,17(1-2):164-170.
[5]艾海峰,陈志坚,高翔.有限长圆柱壳结构声学设计模型[J].海军工程大学学报,2011,23(2):47-51.AI Haifeng,CHEN Zhijian,GAO Xiang.Structure-acoustics design model for finite cylindrical shell[J].Journal of Naval University of Engineering,2011,23(2):47-51.
[6]李冰茹,王宣银,葛辉良.有限长圆柱壳体声辐射特性影响因素研究[J].浙江大学学报(工学版),2007,41(5):785-789.LI Bingru,WANG Xuanyin,GE Huiliang.Study on influence factors for sound radiation characteristics of finite length cylindrical shells[J].Journal of Zhejiang University(Engineering Science),2007,41(5):785-789.
[7]严谨.水下复杂圆柱壳振动能量流和声辐射特性研究[D].武汉:华中科技大学博士学位论文,2006:2-26.YAN Jin.Characteristics of Power Flow and Sound Radiation in Submerged Complex Cylindrical Shells.[D]WU HAN:Huazhong University of Science and Ph D thesis,2006:2-26
[8]陈锐.蛙式打夯机的简单动力学分析[J].科技与创新,2015,(5):34.CHEN Rui.Simple analysis of the dynamics of frog rammer[J].Science and Technology&Innovation,2015,(5):34.
[9]林远东.偏心质量引起旋转系统振动的动力学研究[J].机械设计及制造,2008,(5):29-30.LIN Yuandong.Dynamics research of vibration due to eccentric mass in revolving mechanical system[J].Machinery Design&Manufacture,2008,(5):29-30.
[10]李兵,杨晓刚,林立.开阔水域条件下大尺度圆柱壳辐射声功率测量方法研究[J].第十五届船舶水下噪声学术讨论会论文集,2015:167-174.LI Bing,YANG Xiaogang,LIN Li.The investigation on measuring sound radiation power of large cylindrical shell in the free water field.The proceedings of the 15th ships noise symposium,2015:167-174.