Multi-objective Optimized Noise Reduction Design of Complicated Structure-Borne Acoustic Radiation Under Multiple Constrains

Problems with regard to the optimized design of structure-borne acoustic radiation in the intermediate-frequency region were first studied in this paper. The multi-objective optimization model was established based on structural dynamic response equation and acoustic radiation equation. Acoustic vibration analysis of cavity structural model was conducted to determine intra-cavity noise sources under different random excitation conditions, and then appropriate design variables were selected. Results indicated that after structural size optimization under different excitation conditions, the intra-cavity sound pressure levels lowered to a certain degree. Particularly in the low-frequency region, the maximum decreasing amplitude of sound pressure level could reach 5–7 dB, and the acoustic performance of cavity structure improved favourably.

[1]  Jian-Qiao Sun,et al.  Structural-acoustic optimization of sandwich structures with cellular cores for minimum sound radiation , 2007 .

[2]  Robin S. Langley,et al.  Efficient parametric uncertainty analysis within the hybrid Finite Element/Statistical Energy Analysis method , 2014 .

[3]  Toru Takahashi,et al.  A level-set-based topology optimisation for acoustic–elastic coupled problems with a fast BEM–FEM solver , 2016, 1606.02383.

[4]  R S Langley,et al.  On the diffuse field reciprocity relationship and vibrational energy variance in a random subsystem at high frequencies. , 2007, The Journal of the Acoustical Society of America.

[5]  Song Huang,et al.  Structural-borne acoustics analysis and multi-objective optimization by using panel acoustic participation and response surface methodology , 2017 .

[6]  M. Pierini,et al.  On the improvement of the solution accuracy for exterior acoustic problems with BEM and FMBEM , 2012 .

[7]  R. Langley,et al.  A hybrid method for the vibration analysis of complex structural-acoustic systems , 1999 .

[8]  Gerrit Vermeir,et al.  A hybrid finite element - Statistical energy analysis approach to robust sound transmission modeling , 2014 .

[9]  Semyun Wang,et al.  Topology optimization of bounded acoustic problems using the hybrid finite element-wave based method , 2017 .

[10]  Luyun Chen,et al.  A study on the application of material selection optimization approach for structural-acoustic optimization , 2013 .

[11]  Zhiliang Ma,et al.  Robust optimization of structural–acoustic coupled system with random parameters , 2017 .

[12]  Mohamed Ichchou,et al.  Vibro-acoustic optimisation of sandwich panels using the wave/finite element method , 2016 .

[13]  Gerhard Müller,et al.  Hybrid approaches for vibroacoustical problems based on the finite element method and statistical energy analysis , 2014 .

[14]  E. Wadbro,et al.  Topology optimization of an acoustic horn , 2006 .

[15]  R. Citarella,et al.  Modal acoustic transfer vector approach in a FEM–BEM vibro-acoustic analysis , 2007 .

[16]  Haijun Wu,et al.  Acoustic topology optimization of sound power using mapped acoustic radiation modes , 2017 .

[17]  R S Langley,et al.  On the reciprocity relationship between direct field radiation and diffuse reverberant loading. , 2005, The Journal of the Acoustical Society of America.

[18]  Hassan Hajabdollahi,et al.  Multi-objective aero acoustic optimization of rear end in a simplified car model by using hybrid Robust Parameter Design, Artificial Neural Networks and Genetic Algorithm methods , 2014 .