吉林大学学报(工学版) ›› 2012, Vol. 42 ›› Issue (02): 303-308.

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Prediction of cavity interior noise based on energy finite element method

CHEN Shu-ming, WANG Deng-feng, TAN Gang-ping, SU Li-li, Li Wei   

  1. State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China
  • Received:2011-01-19 Online:2012-03-01 Published:2012-03-01

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Abstract: In order to predict the interior noise of the cavity, the basic principle of energy finite element method (EFEM) was introduced. A coupled cavity-plate-cavity energy finite element analysis (EFEA) model was built, and its interior noise was computed with numerical method. Meanwhile, a statistical energy analysis (SEA) model of cavity-plate-cavity was also built. The prediction result of the EFEA model was compared with the result of the SEA model. The result showed that they were in accordance with each other. Moreover, an EFEA model and a SEA model of cavity-front windshield-cavity were built. The responses of the outer cavities in EFEA and SEA models were respectively calculated, and the response results were compared with test. The comparison results showed that the prediction result of EFEA model was in accordance with that of SEA and test, and the prediction accuracy was also validated.

Key words: vehicle engineering, noise prediction, energy finite element method, statistical energy analysis, transmission loss

CLC Number: 

  • U467.4
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