声子晶体管路降噪设计研究

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1、分类号TP113.1学号14030001ＵＤＣ密级公开工学硕士学位论文声子晶体管路降噪设计研究硕士生姓名曹晓丰学科专业机械工程研究方向振动与噪声控制指导教师郁殿龙研究员国防科学技术大学研究生院二〇一六年十月DesignofNoiseReductioninPhononicCrystalPipeCandidate：CaoXiaofengAdvisor：Prof.YuDianlongAdissertationSubmittedinpartialfulfillmentoftherequirementsforthedegreeofMasterofEngineeringinMechanic

2、alEngineeringGraduateSchoolofNationalUniversityofDefenseTechnologyChangsha，Hunan，P.R.ChinaOctober，2016国防科学技术大学研究生院硕士学位论文目录摘要...........................................................................................................iABSTRACT....................................................

3、..............................................ii第一章绪论..............................................................................................21.1研究背景及意义..............................................................................................21.2传统管路降噪研究综述..........................

4、........................................................21.2.1管路声学.................................................................................................31.2.2空气管路降噪现状.................................................................................41.2.3存在的问题.......................

5、......................................................................61.3声子晶体管路降噪研究基础..........................................................................61.3.1声子晶体基本概念和特征.....................................................................61.3.2声子晶体带隙机理................................

6、.................................................71.3.3声子晶体管路降噪基本原理.................................................................81.3.4声子晶体管路研究现状.......................................................................101.3.5存在的问题.............................................................

7、..............................101.4管路系统声传播特性主要计算方法............................................................101.4.1传递矩阵法...........................................................................................101.4.2有限元法........................