Stability of axially moving paper web

• Autorzy: Marynowski K. , Kołakowski Z.
• Języki publikacji: EN

Abstrakty

EN

Dynamic analysis of axially moving paper web at under and supercritical transport speeds is presented in this paper. A new mathematical model derived from moving orthotropic plate has been used i dynamic investigations. Numerical calculations have been carried out for kraft paper and filter paper. To compare results a membrane model of both paper webs has been investigated as well. In undercritical region of transport speed natural frequencies of the eb decrease during the axial velocity increase. For both papers the critical speeds have been identified at which the fundamental natural frequency vanishes indicating divergence instability of the system. The change of the web orthotropy factor in the published range of experimental results does not influence the critical speed value. The rolls support stiffness influences in the most rate the critical speed of paper web. At supercritical transport seeds between divergence and flutter instability areas the second stability region may appear. The width and position of the second stable region depend on the slendemess ratio of the web and the rolls support stiffness.

Słowa kluczowe

EN

dynamic analysis; paper web; stability

• Wydawca: Wydawnictwo Politechniki Łódzkiej
• Czasopismo: Mechanics and Mechanical Engineering
• Rocznik: 1998
• Tom: Vol. 2, nr 2
• Strony: 247--256
• Opis fizyczny: Bibliogr. 9 poz.

Twórcy

autor

Marynowski K.

• Technical University of Lodz Departments of Machines Dynamics and Strength Materials and Structures Stefanowskiego 1/15, 90-924 Lodz, Poland Tel. [phone]

autor

Kołakowski Z.

• Technical University of Lodz Departments of Machines Dynamics and Strength Materials and Structures Stefanowskiego 1/15, 90-924 Lodz, Poland Tel. [phone]