运用 APDL 语言开发参数化计算模块程序，完成某船浮动舱室的三维声学建模, 根据实际工作情况选取约束条件, 在ANSYS 环境下对整体舱室进行有限元模态分析，对比分析不同防火等级情况下舱室低阶振动频率.编制流固耦合声学计算程序并进行谐波声场分析，验证不同厚度防火岩棉对舱室声学性能的影响.将参数化设计与有限元分析相结合，实现复杂模型的结构参数调整、自动生成实体模型并完成有限元分析，对优化船舶舱室声学设计具有重要作用.
Abstract
The work includes the development of parametric calculation module program based on APDL, the completion of 3D acoustic modeling of a ship floating cabin, the selection of constraints according to the actual work situations, the finite element modal analysis of the overall cabin in the ANSYS environment as well as the comparative analysis of a loworder vibration frequency of the cabin under different fire ratings. Acoustic calculation program of the fluidstructure interaction is developed to analyze harmonic sound field and verify the impact of fireproof rockwools with different thickness on the cabin acoustic performance. Parametric design and finite element analysis are combined together to adjust the structural parameters of the complex models, generate solid models automatically and complete finite element analysis, which is important for optimizing the acoustic design of the ship cabins.
关键词
船舶浮动舱室 /
APDL /
有限元分析 /
模态分析 /
参数化设计
Key words
ship floating cabins /
APDL /
finite element analysis /
mode analysis /
parametric design
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
参考文献
［1］ GLADWELL G M L,MASON V. Variational finite element calculation of the acoustic response of a rectangular panel［J］. Journal of Sound and Vibration,1971,14:115-135.
［2］刘晓明,王晓宇,陈慈慧. 流固耦合船舶舱室中低频噪声数值分析［J］.船舶力学，2008,12（5）：812-818.
LIU Xiao-ming,WANG Xiao-yu,CHEN Ci-hui. Numerical analysis of low and middle frequency noise in ship cabin using fluidstructure coupling［J］.Journal of Ship Mechanics,2008,12(5):812-818. (in Chinese)
［3］周于海，刘刚，胡伟，等. 基于APDL的甲板吊臂架结构参数化建模的分解集成法［J］.武汉理工大学学报，2007, 31（6）：1128-1131.
ZHOU Yu-hai, LIU Gang, HU Wei,et al. Divideintegration method in parametric modeling of jib structure of deck crane based on APDL［J］.Journal of Wuhan University of Technology,2007,31(6):1128-1131.(in Chinese)
［4］LIU Gang.Optimal design for thinwalled box beam based on material strength reliability［J］. Journal of Wuhan University of Technology：Mater.Sci.Ed, 2003,18(1):69-71.
［5］MESD D J,YAMAN Y.The harmonic response of rectangular sandwich plates with multiple stiffening:A flexural wave analysis［J］.J Sound Vib,1991,145(3):409-428.
［6］SONG JeeHun, HONG SukYoon, JOO WonHo. Analysis of structureborne noise in ship cabins using a floating floor with an inserted viscoelastic layer ［J］.Mar Sci Technol,2009,14:127-135.
［7］CHO T. Vibroacoustic characteristics of floating floor system:The influence of frequencymatched resonance on low frequency impact sound ［J］.Journal of Sound and Vibration,2012,332(1):33-42.
［8］于大鹏，赵德有，汪 玉，船舶声学建模和阻尼结构对舱室噪声影响研究［J］.船舶力学,2010,14（5）:539-548.
YU Dapeng,ZHAO Deyou,WANG Yu. Influence of damped material and the ship model of acoustic on the ship cabin noise［J］.Journal of Ship Mechanics,2010,14(5):539-548. (in Chinese)
基金
中央高校基本科研业务费专项资金资助项目（2011QN106）.
PDF(488 KB)
