How to Predict Powertrain Vibration at the Engine Mounting Points Under Running Conditions

Seki, Yasuhiko; Suzuki, Toshibumi; Tsukahara, Masayoshi; Takahashi, Yukou

doi:10.4271/2001-01-1592

Cited by 9 publications

(9 citation statements)

References 4 publications

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“…Among these sources, it is known that the powertrain is the dominant contributor to interior noise (Lee et al, 1994). Therefore, many researchers have tried to develop a simulation method to predict interior noise caused by a powertrain (Seki et al, 2001;Kim et al, 2007). Interior noise due to a powertrain is induced by two transfer paths: airborne (noise) and structure-borne (vibration).…”

Section: Introductionmentioning

confidence: 99%

Prediction of interior noise by excitation force of the powertrain based on hybrid transfer path analysis

Kim

Lee

2008

Int.J Automot. Technol.

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In the early design stage of a vehicle, simulation of interior noise is useful for assessment and enhancement of the noise, vibration and harshness (NVH) performance. Traditional transfer path analysis (TPA) technology cannot simulate interior noise since it uses an experimental method. In order to solve this problem, hybrid TPA is employed in this paper. Hybrid TPA uses simulated excitation force as the input force, which excites the flexible body of a car at the mount points, while traditional TPA uses the measured force. This simulated force is obtained by numerical analysis of the finite element (FE) model of a powertrain. Interior noise is predicted by multiplying the simulated force by the vibro-acoustic transfer function (VATF) of the vehicle. The VATF is the acoustic response in the compartment of a car to the input force at the mount point of the powertrain in the flexible car body. The trend of the predicted interior noise based on the hybrid TPA corresponds very well to the measured interior noise, with some difference due to not only experimental error and simulation error, but also the effect of the airborne path.

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Section: Introductionmentioning

confidence: 99%

Prediction of interior noise by excitation force of the powertrain based on hybrid transfer path analysis

Kim

Lee

2008

Int.J Automot. Technol.

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“…Interior noise by the structure-borne path is complex since this noise is related to the vibration of the car body, powertrain, mounting bracket, etc. Therefore, it is not easy to predict the structure-borne interior noise with high accuracy based only on numerical methods (Seki et al, 2001;Auweraer et al, 2007;Lee, 2004). Traditional TPA has been used for the prediction of this kind of interior noise based on experimental methods, (Lee, 2004).…”

Section: Introductionmentioning

confidence: 98%

Excitation force analysis of a powertrain based on CAE technology

Kim

Lee

2008

Int.J Automot. Technol.

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The excitation force of a powertrain is one of major sources of interior noise in a vehicle. This paper presents a novel approach to predict the interior noise caused by the vibration of the powertrain by using the hybrid TPA (transfer path analysis) method. Although the traditional transfer path analysis (TPA) is useful for the identification of powertrain noise sources, it is difficult to modify the structure of a powertrain by using experiments for the reduction of vibration and noise. In order to solve this problem, the vibration of the powertrain in a vehicle is numerically analyzed by using the finite element method (FEM). The vibration of the other parts of the vehicle is investigated by using experiments based on vibrato-acoustic transfer function (VATF) analysis. These two methods are combined for the prediction of interior noise caused by a powertrain. Throughout this research, two papers are presented. This paper presents a simulation of the excitation force of the powertrain exciting the vehicle body based on numerical simulation. The other paper presents a prediction of interior noise based on the hybrid TPA, which uses the VATF of the car body and the excitation force predicted in this paper.

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“…Among these sources, it is known that the powertrain is the dominant contributor to the interior noise 1 . Therefore, many researchers have tried to develop a simulation method to predict the interior noise caused by a powertrain 2,3 . The interior noise due to a powertrain is the result of two transfer paths.…”

Section: Introductionmentioning

confidence: 99%

Estimation of interior noise by using hybrid transfer path analysis

Kim¹,

Og²,

kim³

et al. 2008

Noise Control Eng. J.

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This paper presents a practical real approach for predicting the interior noise caused by the vibration of the powertrain by using the hybrid transfer path analysis (TPA) method. The traditional TPA has been used for the identification of powertrain noise sources. However, with only experimental data for the identification of vibration and noise, it is difficult to determine the effects of modifications to the structure of a powertrain. In order to solve this problem, the vibration of the powertrain in a vehicle is numerically analyzed by using the finite element method (FEM). The vibration of other parts in a vehicle is investigated by using the experimental method based on vibro-acoustic transfer function (VATF) analysis. These two methods are combined for the prediction of interior noise caused by a powertrain. © 2008 Institute of Noise Control Engineering.

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How to Predict Powertrain Vibration at the Engine Mounting Points Under Running Conditions

Cited by 9 publications

References 4 publications

Prediction of interior noise by excitation force of the powertrain based on hybrid transfer path analysis

Prediction of interior noise by excitation force of the powertrain based on hybrid transfer path analysis

Excitation force analysis of a powertrain based on CAE technology

Estimation of interior noise by using hybrid transfer path analysis

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