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The defense date of the thesis is 2018-09-10
The current date is 2019-06-19
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URN etd-0907118-141243 Statistics This thesis had been viewed 92 times. Download 0 times. Author Wei-Chuan Chen Author's Email Address firstname.lastname@example.org Department Mechanical Engineering Year 2017 Semester 2 Degree Master Type of Document Master's Thesis Language zh-TW.Big5 Chinese Page Count 89 Title Analysis and Optimization of Practice Wind Instrument Mufflers with Multiple Chambers Keyword FEM Wind Instrument Muffler COMSOL Neural Network Neural Network COMSOL Wind Instrument Muffler FEM Abstract COMSOL, a multiple physical quantity coupled numerical analysis software, is adopted in the acoustical analysis in this thesis. The primary purpose of the research is to analyze and design wind instrument muffler by adding baffles, extended, tube, perforated tube and sound muffling material.
The thesis includes three parts: (1) A straight-through muffler which is added by baffles, extended tube, perforated tube and sound muffling material will be discussed .(2) An assessment of the acoustical performance for the wind instrument muffler. Here, the acoustical effect of the internal extended tube and the placement of perforated will be discussed. (3) A best allocation of the wind instrument muffler with an interior extended tube will be explored by using the artificial neural network in conjunction with the GA optimizer.
Consequently, the wind instrument muffler is designed and improved using the COMSOL and the optimal process. The relevant effects of geometric dimensions and targeted frequency will be recognized, with this analysis, the muffler’s competition in market will be greatly promoted.
Advisor Committee Ying-chun Chan - advisor
Min-chie Chiu - co-chair
Shih-ping Liao - co-chair
Files Date of Defense 2018-07-20 Date of Submission 2018-09-10