Drgania układu prętowego z tarciem coulomba na powierzchnie nieciągłości

The paper presents a method of vibration analysis of a rod system with dry friction at the construction discontinuity place, fig. 1. The rod system was described as a system of finite degrees of freedom by means of tche method of finite elements. General description of dry friction forces at the contact surface was made by means of Coulomb friction tensor [23, 24]. Friction anisotropy and a real character of contact was taken into consideration. The motion properties of the rods system were investigated by numerical studying of an example of turbine blades packet ,,pure vibration''. The effects of friction excited vibration and of vibration coupling resulting from elasticity of the system and/or anisotropic friction, were showed.