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 |
| Externally published | Yes |
| Event | Proceedings of the 2002 International Conference on Noise and Vibration Engineering, ISMA - Leuven Duration: 2002 Sep 16 → 2002 Sep 18 |
Other
| Other | Proceedings of the 2002 International Conference on Noise and Vibration Engineering, ISMA |
|---|---|
| City | Leuven |
| Period | 02/9/16 → 02/9/18 |
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ASJC Scopus subject areas
- Engineering(all)
Cite this
FRF measurement of rotational DOFs by T-block approach (improvement of accuracy for random noise and application to a car body). / Hosoya, Naoki; Yoshimura, T.
Proceedings of the 2002 International Conference on Noise and Vibration Engineering, ISMA. ed. / P. Sas; B. Hal. 2002. p. 2271-2279.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - FRF measurement of rotational DOFs by T-block approach (improvement of accuracy for random noise and application to a car body)
AU - Hosoya, Naoki
AU - Yoshimura, T.
PY - 2002
Y1 - 2002
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=13444257607&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=13444257607&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:13444257607
SN - 9073802792
SN - 9789073802797
SP - 2271
EP - 2279
BT - Proceedings of the 2002 International Conference on Noise and Vibration Engineering, ISMA
A2 - Sas, P.
A2 - Hal, B.
ER -