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基于边光滑有限元的声固耦合研究 预览 被引量:4

Coupled Edge-based Smoothing Finite Element Method for Structural Acoustic Problems
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摘要 在声固耦合的计算分析中,一般采用耦合的有限元或者耦合的有限元与边界元等数值方法来进行模拟。由于有限元系统偏硬,因而在使用有限元进行声学及声固耦合问题的模拟中,都会产生比较大的数值误差。为了降低声固耦合系统的刚度,降低有限元的计算误差,通过采用耦合的边光滑有限元法来对三维的声固耦合问题进行模拟。由于三角形网格和四面体对于任何复杂几何模型的离散适应性很强,因此在结构域中,将采用三角形来离散系统,而在声学域中,采用四面体来离散,并对结构域中三角形板单元以及流体域中的四面体单元都进行基于单元边的梯度光滑操作。通过数值算例的研究结果表明,光滑梯度操作能够适当降低有限元系统的刚度,使离散系统刚度更加接近连续系统的刚度,数值解更加接近真实解,从而为本方法的进一步应用打下基础。 The coupled finite element method(coupled FEM) and coupled finite element method/boundary element method(coupled FEM/BEM) are always adopted to solve the structural-acoustic problems, and it is known that the finite element methods behave "over-stiffness" which induce the large numerical error for the structural-acoustic problems. In order to soften the "over-stiffness" and improve the results of FEM, a coupled ES-FEM model is extended to solve the structural-acoustic problems consisting of a plate structure interacting with the fluid medium. Three-node triangular elements and four-node tetrahedral elements are used to discretize the two-dimensional(2D) plate and three-dimensional(3D) fluid, respectively, as they can be generated easily and even automatically for complicated geometries. Numerical studies have verified that the gradient smoothing technique can provide a proper softening effect to the model, and hence significantly improve the accuracy of the solution for the coupled systems, which will lay the foundation for further applications.
作者 何智成 李光耀 成艾国 钟志华 HE Zhicheng LI Guangyao CHENG Aiguo ZHONG Zhihua (State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082)
出处 《机械工程学报》 EI CAS CSCD 北大核心 2014年第4期113-119,共7页 Chinese Journal of Mechanical Engineering
基金 国家自然科学基金(11202074)、广西科技计划(12118007.14B)和湖南大学汽车车身先进设计制造国家重点实验室自主研究课题(31175002)
关键词 边光滑有限元 声固耦合 振动噪声 edge-based smoothed finite element method (ES-FEM) structural-acoustic vibration and Noise
作者简介 何智成(通信作者),男,1983年出生,博士研究生。主要研究方向为汽车的振动噪声。E-mail:hezhicheng815@gmail.tom 李光耀,男,1963年出生,湖南大学汽车车身先进设计制造国家重点实验室主任,博士,教授,博士研究生导师。主要研究方向为数值模拟、汽车CAE技术、无网格、反演和优化技术。E-mail:liguangyao@sina.com
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参考文献19

  • 1GLADWELL G M L, ZIMMERMANN G. On energy and complementary energy formulations of acoustic and structural vibration problems[J]. Journal of Sound and Vibration, 1966, 3(3): 233-241. 被引量:1
  • 2CRAGGS A. The transient response of a coupled plate acoustic system using plate and acoustic finite elements[J]. Journal of Sound and Vibration, 1971, 15: 509-528. 被引量:1
  • 3NEFFSKE D J, WOLF J A, HOWELL L J. Structural- acoustic finite element analysis of the automobile passenger compartment: A review of current practice[J]. J Sound Vib., 1982, 80(2): 247-266. 被引量:1
  • 4EVERST1NE G C, HENDERSON F M. Coupled finite element/boundary element approach for fluid structure interaction[J]. Journal of the Acoustical Society of America, 1990, 87: 1938-1947. 被引量:1
  • 5WU T W. Boundary element in acoustics: Fundamentals and computer codes[M]. Southampton: WIT Press, 2000. 被引量:1
  • 6RAJAKUMAR C, ALl A. Boundary element-finite element coupled eigenanalysis of fluid-structure systems. Int. J. Numer. Methods Engrg., 1996, 39: 1625-1634. 被引量:1
  • 7FISCHER M, GAUL L. Fast BEM-FEM mortar coupling for acoustic-structure interaction[J]. Int. J. Numer. Methods Engrg., 2005, 62(12): 1677-1690. 被引量:1
  • 8朱才朝,秦大同,李润方.车身结构振动与车内噪声声场耦合分析与控制[J].机械工程学报,2002,38(8):54-58. 被引量:49
  • 9马天飞 ,林逸 ,张建伟 .轿车车室声固耦合系统的模态分析[J].机械工程学报,2005,41(7):225-230. 被引量:37
  • 10吴光强,盛云,方园.基于声学灵敏度的汽车噪声声-固耦合有限元分析[J].机械工程学报,2009,45(3):222-228. 被引量:34

二级参考文献28

  • 1马天飞 ,林逸 ,张建伟 .轿车车室声固耦合系统的模态分析[J].机械工程学报,2005,41(7):225-230. 被引量:37
  • 2马天飞 ,林逸 ,彭彦宏 ,陈榕 .轿车车内低频噪声的仿真计算及试验研究[J].中国机械工程,2005,16(16):1489-1492. 被引量:19
  • 3凯墨乐M M.现代汽车结构分析[M].北京:人民交通出版社,1987.. 被引量:1
  • 4MOHANTY A R, PIERRE B D S, SURULI N P. Structure-bome noise reduction in a truck cab interior using numerical techniques[J]. Applied Acoustics, 2000, 59:1-17. 被引量:1
  • 5SUNG S H, NEFSKE D J. A coupled structural-acoustic finite element model for vehicle interior noise analysis[J]. Transactions of the ASME, Journal of Vibration, Acoustics Stress, and Reliability in Design, 1984, 106: 314-318. 被引量:1
  • 6KOMPELLA M S. Variation of structural-acoustic characteristics of automotive & vehicle[J]. Noise Control Engineering Journal, 1996, 44 (2): 93-99. 被引量:1
  • 7YI Jong-Cheol. Panel contribution analysis by using acoustic reciprocity[C]//Proceeding of the 2nd MSC Worldwide Automotive Conference. Dearborn, MI, Oct. 2000: 1-14. 被引量:1
  • 8LINDEN P J G Van Der, FUN J K. Using mechanicalacoustic reciprocity for diagnosis of structure borne sound in vehicles[R]. SAE Paper 931340, 1993. 被引量:1
  • 9The MacNeal-Schwendler Corporation. MSC/NASTRAN advanced dynamics guide version 2001[M]. Los Angeles: The MacNeal-Schwendler Corporation, 2001. 被引量:1
  • 10方园,吴光强.路面激励下车内噪声仿真测试与评价[C]//%国自动化学会,中国系统仿真学会.2006系统仿真及其应用学术交流会论文集.上海:中国系统仿真学会,2006:168-171. 被引量:1

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