Effect of the Curved Automotive Panels for NVH Performance Improvement

NVH 성능향상을 위한 복곡 자동차 패널의 효과

  • 유희 (현대자동차 해석기술팀) ;
  • 이영우 (현대자동차 해석기술팀) ;
  • 최병기 (울산대학교 기계자동차공학부) ;
  • 김종국 (울산대학교 기계자동차공학부) ;
  • 염영진 (울산대학교 기계자동차공학부)
  • Published : 2009.07.01


In order to enhance the dynamic stiffness of automotive panel, effect of bead and curved surface was investigated. Modal test was performed for principle specimens which have various kinds of beads, holes and curved surfaces. Test was also performed for conventional dash panel assembly and rear floor panel assembly and curved shaped ones. Results showed that curved shape increased the natural frequency of automotive panel more effectively than the bead. Finite element analysis was also performed and yielded good match with the test results.


Bead;Curved Panel;Modal Test;Natural Frequency;Membrane Deformation;Uneven Deformation


  1. Patil, A. R. and Crocker, M. J., 2000, 'Prediction and Optimization of Radiated Sound Power and Radiation Efficiency of Vibrating Structures using FEM,' SAE paper NO. 2000-01-0726
  2. Webb, J.C., 'Sound Power Approximation for Rectangular Ribbed Plates Subject to harmonic Excitation,' SAE paper NO. 972045
  3. Li, W. L. and Cho, P. E., 'CAE Tools for Structure Acoustic Analysis,' SAE paper NO. 952117
  4. Zhang, K., Yang, J., Wu, L. and Mazur, W., 'Acoustic Analysis of Vehicle Ribbed Floor,' SAE paper NO. 971945
  5. Oka, Y., Ono, H. and Hirako, N., 'Panel Vibration Control for Booming Noise Reduction,' SAE paper NO. 911086
  6. Onsay, T., Akanda, A. and Goetchius, G., 'Vibro-Acoustic Behavior of Bead-Stiffened Flat Panel: FEA, SEA, and Experiment Analysis,' SAE paper NO. 1999-01-1698
  7. Steyer, G., Chung, C. H. and Brassow, B., 'Transmission Side Cover Design Optimization for NVH Part1: Shell Curvature Studies,' SAE paper NO. 972024
  8. Kato, T., Hoshi, K. and Umemura, E., 'Application of Soap Film Geometry for Low Noise Floor Panels,' SAE paper NO. 1999-01-1799
  9. Ham, J. H., 2005, 'Curved Panel Design for the Noise and Vibration Reduction,' Symposium of the KSAE, pp.161-167