Dynamic stiffness evaluation for reconfigurable machine tools including weakly non-linear joint characteristics
Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, cilt.216, sa.1, ss.87-101, 2002 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Özet
- Cilt numarası: 216 Sayı: 1
- Basım Tarihi: 2002
- Doi Numarası: 10.1243/0954405021519726
- Dergi Adı: Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.87-101
- Anahtar Kelimeler: Design automation, Dynamic stiffness, Non-linear receptance coupling, Reconfigurable machine tools
- Ankara Yıldırım Beyazıt Üniversitesi Adresli: Hayır
Özet
A systematic procedure is proposed to evaluate the dynamic characteristics of design alternatives for a reconfigurable machine tool (RMT). The procedure is intended to be used in an automated design environment where various design alternatives are generated by kinematic synthesis based on a given task and specification. The evaluation procedure makes use of a substructuring method called non-linear receptance coupling. The coupling method includes the effects of weakly non-linear compliant joints through the use of describing functions for the non-linearities involved. Experimental data obtained from a prototype RMT are used to show the validity of the coupling method. To demonstrate the utility of the proposed evaluation procedure design alternatives are generated based on a lumped parameter model of the RMT and examined with respect to the proposed criteria. It is shown that joint non-linearities may affect dynamic stiffness considerably. It is also shown that the suggested criteria can distinguish various design alternatives with respect to their expected dynamic behaviour.