Numerical Simulation of an Active Feedback Control of Web Flutter by Using Flow Control Devices

摘要

This paper deals with numerical simulations of an active feedback control of web flutter which occurs to the web with both ends fixed and tensioned. In this paper, a non-contact active feedback control method of web flutter by using movable plates set at inlet or outlet of the passage are developed and its numerical model is constructed by using finite-segment method based on multi-body dynamics formulation. The control performance of the proposed control method is evaluated by the numerical simulations. The numerical model of the flexible web consists of some rigid bodies connected with rotational springs and dampers based on multi-body dynamics formulation. The pressure fluctuations in the narrow passage and fluid forces acting on the rigid bodies are derived from the basic equations of leakage fluid flow in a narrow passage. The equation of motion of the flexible sheet coupled with the fluid flow controlled by the movable plates is calculated numerically. By the numerical simulations, it is shown that the web flutter occurs to the web is effectively suppressed by the proposed non-contact flow control devices and active feedback control method.