TY - GEN
T1 - High frequency vibration analysis of automotive body panels with damping materials
AU - Kurosawa, Yoshio
AU - Yamaguchi, Takao
PY - 2010
Y1 - 2010
N2 - We have developed a technique for estimating vibrations of an automotive body structures with viscoelastic damping materials using large-scale finite element (FE) model, which will enable us to grasp and to reduce high-frequency road noise (200-500Hz). In the new technique, first order solutions for modal loss factors are derived applying asymptotic method. This method saves calculation time to estimate modal damping as a practical tool in the design stages of the body structures. Frequency responses were calculated using this technique and the results almost agreed with the test results. This technique can show the effect of the viscoelastic damping materials on the automotive body panels, and it enables the more efficient layout of the viscoelastic damping materials. Further, we clarified damping properties of the automotive body structures under coupled vibration between frames and panels with the viscoelastic damping materials.
AB - We have developed a technique for estimating vibrations of an automotive body structures with viscoelastic damping materials using large-scale finite element (FE) model, which will enable us to grasp and to reduce high-frequency road noise (200-500Hz). In the new technique, first order solutions for modal loss factors are derived applying asymptotic method. This method saves calculation time to estimate modal damping as a practical tool in the design stages of the body structures. Frequency responses were calculated using this technique and the results almost agreed with the test results. This technique can show the effect of the viscoelastic damping materials on the automotive body panels, and it enables the more efficient layout of the viscoelastic damping materials. Further, we clarified damping properties of the automotive body structures under coupled vibration between frames and panels with the viscoelastic damping materials.
KW - Computer aided engineering
KW - Damping
KW - Finite element method
KW - Vibration
UR - https://www.scopus.com/pages/publications/78650796209
U2 - 10.4028/www.scientific.net/AMM.36.293
DO - 10.4028/www.scientific.net/AMM.36.293
M3 - 会議への寄与
AN - SCOPUS:78650796209
SN - 9780878492299
T3 - Applied Mechanics and Materials
SP - 293
EP - 296
BT - Precision Instrumentation and Measurement
T2 - International Conference on Precision Instrumentation and Measurement 2010, CPIM2010 and its Satellite Event, the International Symposium on Mass Measurement Device, MMD2010
Y2 - 17 March 2010 through 20 March 2010
ER -