Comparison of Two Model Coupling Methods for Joint Identication

• Autorzy: Susen J. , Sulitka M. , Sindler J. , Janota M.
• Języki publikacji: EN

Abstrakty

EN

An experimental identification of joint dynamic properties requires accurate models of the joined bodies and an appropriate model coupling method. The bodies to be coupled can be described by their mass, stiffness and damping matrices (M, K, C) or by receptance matrices. Each approach has its advantages and disadvantages. The receptance matrix method requires a high number of measurements. However the measured data can be used directly and no model identification is needed. The experimental identification of the M, K, C matrices feasible for creating precise coupled models is difficult. Therefore, an approach based on a verified FE model can be employed. The two methods of model identification and coupling are discussed using a case study of two bolted beams. Several ways of the receptance matrices measurement simplification and their influence on the accuracy of the results are studied. The effect of noise, measured FRF peak accuracy and data filtering on the resulting coupled receptance matrix is studied as well. The results obtained by the receptance matrix method are compared to the results obtained by the method of coupling the verified FE models. It has been found that the method based on coupling the verified M, K, C matrices proves to be a more reliable approach, which will allow a more precise joint dynamic model identification in the next step.

Słowa kluczowe

EN

machine tool; mutlibody model; component coupling; harmonic analysis

• Wydawca: Wydawnictwo Wrocławskiej Rady FSNT NOT
• Czasopismo: Journal of Machine Engineering
• Rocznik: 2015
• Tom: Vol. 15, No. 1
• Strony: 58--70
• Opis fizyczny: Bibliogr. 4 poz., rys.

Twórcy

autor

Susen J.

• Czech Technical University, Faculty of mechanical Engineering, RCMT, Prague, Czech Republic

autor

Sulitka M.

• Czech Technical University, Faculty of mechanical Engineering, RCMT, Prague, Czech Republic

autor

Sindler J.

• Czech Technical University, Faculty of mechanical Engineering, RCMT, Prague, Czech Republic

autor

Janota M.

• Czech Technical University, Faculty of mechanical Engineering, RCMT, Prague, Czech Republic

Bibliografia

• [1] ITO Y., 2008, Modular design for machine tools, McGraw-Hill.
• [2] SHIMIZU S., Kabaya Y., Sakamoto H, Kenichi Yamashita K., 2013, Identification Method of Dynamic Characteristics of Joints in Jointed Structures, International Journal of Automation Technology, 7/7, 221−227.
• [3] DE KLERK D., RIXEN D., VOORMEEREN S., 2008, General framework for dynamic substructuring: History, review, and classification of techniques, AIAA Journal, 46/5, 1169−1181.
• [4] DE KLERK D., RIXEN D.J., DE JONG J., 2006, The Frequency Based Substructuring (FBS) Method reformulated according to the Dual Domain, In: Proceedings of the 15th International Modal Analysis Conference, Society of experimental machanics, 136.