JOURNAL OF TEXTILE RESEARCH ›› 2017, Vol. 38 ›› Issue (02): 170-176.doi: 10.13475/j.fzxb.20161006607

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Vibro-acoustic coupling simulation of 3-D circular braiding machine’s head section under different working conditions

  

  • Received:2016-10-25 Revised:2016-11-14 Online:2017-02-15 Published:2017-02-27

Abstract:

To study the noise produced in the 3-D braiding process of 3D circular braiding machine, a 3-D model of its head section was established. By importing this model into ANSYS Workbench, the modal analysis was carried out and the natural frequencies of the head section were obtained, as well as the modal vibration modes. According to the principle of avoiding natural frequencies, the working conditions were determined. With the multi-body dynamics model of gear transmission set up by Adams, the time-varying force data of both gear mesh and bearing reaction were obtained. And then, the time-varying forces data were converted into frequency domain data by FFT method, which was used as the exciting forces in the model built by LMS Virtual Lab. Combining the modal analysis data with the frequency domain data of bearing reaction forces, the vibro-acoustic coupling model was investigated. Finally, the noise fields under different loads and speeds were obtained, verifying that the designed working conditions could meet the requirement, and the results could provide a reference for the vibro-acoustic research of braiding machine and the field management of practical engineering.

Key words: 3-D circular braiding machine, head section, working condition, vibro-acoustic coupling, simulation

CLC Number: 

  • TS103.3
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