This diploma thesis is focused on simulation modeling of Roots blowers, which are produced by Kubicek VHS company. First part of this thesis is about oscillations and its damping. In following phase are analyzed each methods realization and control of oscillation damping. Second part of this thesis is focused on Roots blower modelling with rigid and flexible parts and its verification. Output of this thesis is dynamic analysis of Roots blower 3D28C. On attached CD are program annex and project in Adams MSC. Aim of this thesis is proposing adjustments, which would reduce noise and vibration of analyzed machine.

This thesis is concerned with the spread of noise in the housing sets blowers, blower vibration, due to the shape of the geometry of the individual parts of the blower and the design of a suitable discharge muffler in order to achieve the highest possible attenuation. Analysis blower and silencer discharge was conducted using the finite element simulation ANSYS 15.0

The Master‘s thesis deals with issues of noise and vibrations of Roots blowers. In the theoretical part, potential sources of noise and vibrations are described. Detailed knowledge of basic types of mufflers is summarized, and their suitability for the corresponding application is evaluated. The practical part is focused on performing experimental measurements of the Roots blower’s noise and vibrations and the main sources of noise are determined. Subsequently, the existing anti-noise measures are analyzed and the proposal for adjusting the current measures for further noise reduction is presented.

This thesis is concerned with vibration analysis of the roots blower chassis. In the beginning it describes methods of solution in low frequency region. Next part is about finite element model of the chassis and computing natural frequencies, eigen modes and vibration spreading and analysis possible construction changes which should lead to lower vibrations.