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Noise Reduction Methods in Transmissions
Benda, Matouš ; Zubík, Martin (referee) ; Prokop, Aleš (advisor)
Transmissions are basic elements of cars, which are important parts of everyday life. Expect targeted properties transmissions have a great influence for a total noise emitted by car. This thesis deals with possibilities of reducing this noise. In a first part of this thesis, reader is acquainted with the basic knowledge of acoustics, where are definitions of sound and mentioned noise. Another part analyzes transmission, as a mechanical component formed by smaller machinery units. This description is important for understanding transmission of vibrations in the structure, which further due to vibrate surroundings, which the human ear perceives as noise. These vibrations are mainly generated between meshing gears, and therefore the transmission error, which is responsible for these vibrations is analyzed in the next section. The last part discusses noise reduction methods, partitioned by the transmission components, in which are these methods applied.
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Noise Reduction Methods in Transmissions
Benda, Matouš ; Zubík, Martin (referee) ; Prokop, Aleš (advisor)
Transmissions are basic elements of cars, which are important parts of everyday life. Expect targeted properties transmissions have a great influence for a total noise emitted by car. This thesis deals with possibilities of reducing this noise. In a first part of this thesis, reader is acquainted with the basic knowledge of acoustics, where are definitions of sound and mentioned noise. Another part analyzes transmission, as a mechanical component formed by smaller machinery units. This description is important for understanding transmission of vibrations in the structure, which further due to vibrate surroundings, which the human ear perceives as noise. These vibrations are mainly generated between meshing gears, and therefore the transmission error, which is responsible for these vibrations is analyzed in the next section. The last part discusses noise reduction methods, partitioned by the transmission components, in which are these methods applied.
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