Dissertation > Transportation > Waterway transport > Marine Engineering > Ship machinery

Research on Damping Vibration Attenuation of Gearbox

Author YuLiMing
Tutor ShiDongYan
School Harbin Engineering University
Course Mechanical Design and Theory
Keywords Viscoelastic damping Constrained damping Finite Element Method Vibration design
CLC U664
Type Master's thesis
Year 2010
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Marine gear reducer structure noise seriously affect the hidden nature of the ship , the stability of the transmission system as well as the comfort of the crew working environment . There are several ways of controlling the vibration , the damping structure gearcase add effective measures to suppress cabinet resonance . Damping structure is designed to rely on experience and many experiments to determine the structure of the parameters , in most cases using the finite element method , the box in the the Reducer product design stage damping processing , has important theoretical value and application prospect . Influenced by the frequency due to the performance of the viscoelastic damping material , accurate modeling of the damping structure has been a problem in the kinetic analysis , finite element software ANSYS QR damping modal extraction based on a accurately calculate the structure modal damping ratio iteration control procedures . The control of damped sandwich plate structure finite element calculation , analysis and comparison of the different damping effect when the the damping structure type , structure size , damping material , processing position four conditions changes , and to come to the board structure damping design corresponding conclusions. By kinetic analysis of the gear unit housing , the inherent characteristics of the box as well as the specific conditions of the steady-state response . Board structure damping design conclusions based on kinetic analysis results to the design of damping for the gear unit housing , to determine the final design .

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