FRF measurement of rotational DOFs by T-block approach (improvement of accuracy for random noise and application to a car body)

N. Hosoya; T. Yoshimura

FRF measurement of rotational DOFs by T-block approach (improvement of accuracy for random noise and application to a car body)

N. Hosoya, T. Yoshimura

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

The importance of rotational FRF was recognized widely, and many attempts have been made to measure those FRFs experimentally, but the satisfactory results can hardly be seen. The authors have proposed an estimation method of FRF on rotational degrees of freedom (DOFs) by adding a T-block to the structure's measurement point. In this paper the measurement noise is considered, and the noise effective approach is presented, which lead to good estimate of rotational FRF. The proposed method is applied to estimate cross FRFs of a car body. A new T-square-block (T²-block) for measurement of six DOFs (three DOFs in translation and three DOFs in rotation) is designed. Two T²-blocks are attached to the measurement points of the sub frame of a passenger car: the T²-blocks are excited by the impact hammer, respectively; and cross FRFs of the car body are obtained. The validity of the method is investigated by comparing the experimental model and the FE model. The estimated rotational FRFs of car body are used for structure synthesis approach.

Original language	English
Title of host publication	Proceedings of the 2002 International Conference on Noise and Vibration Engineering, ISMA
Editors	P. Sas, B. Hal
Pages	2271-2279
Number of pages	9
Publication status	Published - 2002 Dec 1
Externally published	Yes
Event	Proceedings of the 2002 International Conference on Noise and Vibration Engineering, ISMA - Leuven, Belgium Duration: 2002 Sep 16 → 2002 Sep 18

Publication series

Name	Proceedings of the 2002 International Conference on Noise and Vibration Engineering, ISMA

Conference

Conference	Proceedings of the 2002 International Conference on Noise and Vibration Engineering, ISMA
Country	Belgium
City	Leuven
Period	02/9/16 → 02/9/18

ASJC Scopus subject areas

Engineering(all)

Access to Document

Cite this

Hosoya, N., & Yoshimura, T. (2002). FRF measurement of rotational DOFs by T-block approach (improvement of accuracy for random noise and application to a car body). In P. Sas, & B. Hal (Eds.), Proceedings of the 2002 International Conference on Noise and Vibration Engineering, ISMA (pp. 2271-2279). (Proceedings of the 2002 International Conference on Noise and Vibration Engineering, ISMA).

FRF measurement of rotational DOFs by T-block approach (improvement of accuracy for random noise and application to a car body). / Hosoya, N.; Yoshimura, T.

Proceedings of the 2002 International Conference on Noise and Vibration Engineering, ISMA. ed. / P. Sas; B. Hal. 2002. p. 2271-2279 (Proceedings of the 2002 International Conference on Noise and Vibration Engineering, ISMA).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Hosoya, N & Yoshimura, T 2002, FRF measurement of rotational DOFs by T-block approach (improvement of accuracy for random noise and application to a car body). in P Sas & B Hal (eds), Proceedings of the 2002 International Conference on Noise and Vibration Engineering, ISMA. Proceedings of the 2002 International Conference on Noise and Vibration Engineering, ISMA, pp. 2271-2279, Proceedings of the 2002 International Conference on Noise and Vibration Engineering, ISMA, Leuven, Belgium, 02/9/16.

Hosoya N, Yoshimura T. FRF measurement of rotational DOFs by T-block approach (improvement of accuracy for random noise and application to a car body). In Sas P, Hal B, editors, Proceedings of the 2002 International Conference on Noise and Vibration Engineering, ISMA. 2002. p. 2271-2279. (Proceedings of the 2002 International Conference on Noise and Vibration Engineering, ISMA).

Hosoya, N. ; Yoshimura, T. / FRF measurement of rotational DOFs by T-block approach (improvement of accuracy for random noise and application to a car body). Proceedings of the 2002 International Conference on Noise and Vibration Engineering, ISMA. editor / P. Sas ; B. Hal. 2002. pp. 2271-2279 (Proceedings of the 2002 International Conference on Noise and Vibration Engineering, ISMA).

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