张永波,黄其柏,周明刚,王勇.并联内插管双室扩张式消声器的插入损失[J].农业机械学报,2007,38(8):49-52.
.[J].Transactions of the Chinese Society for Agricultural Machinery,2007,38(8):49-52.
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并联内插管双室扩张式消声器的插入损失   [下载全文]
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DOI:10.3969/j.issn.1000-1298.[year].[issue].[sequence]
中文关键词:  消声器  并联内插管双室扩张式  插入损失  等效线路切割法  传递矩阵
基金项目:
张永波  黄其柏  周明刚  王勇
华中科技大学
中文摘要:利用等效线路切割法,把并联内插管双室扩张式消声器简化为等效并联线路,得出此消声结构元件的声场传递矩阵,并对该类消声器的插入损失进行Matlab模拟计算。实验表明,这种方法有较好的拟合度,在低中频段内基本能反映消声元件的消声趋势。
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Abstract: An equivalent circuitry incision way was used to simplify parallel expansionary insert-pipe inside of two-room muffler into equivalent parallel circuitry, which could get their transfer matrix, and then based on Matlab, they were simulated and studied to obtain the insert loss. The experiment showed that it is a good fitness way, which could express the depression of sound in low and center frequency range.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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