北京生物医学工程2017，Vol.36Issue(1)：45-49,5.DOI:10.3969/j.issn.1002-3208.2017.01.07
计算机辅助设计和有限元分析法在耳模声学特性研究中的应用
Application of computer aid design and finite element method on the acoustic characteristics in earmold
穆晨 1吴涛 2钱秀清3
作者信息
- 1. 中国聋儿康复研究中心,北京100029
- 2. 首都医科大学附属北京安贞医院,北京100029
- 3. 首都医科大学生物医学工程学院,北京 100069
- 折叠
摘要
Abstract
Objective The possibility of using the computer aid design and the finite element method of acoustic-structural coupled to analyze transaudient of the acoustic tube in earmold is discussed.Methods First,we collect the whole ear data of a volunteer by computed tomography (CT) and build the 3D outer ear model.Second we obtain the earmold and the acoustic tube by Boolean operation.Third,we calculate and measure the transaudient characteristic of the acoustic tube at the range from 500 Hz to 8000 Hz under 90 dB SPL pressure by Ansys software and Aurical real-ear test equipment separately,and then we record the sound pressure at the outlet of acoustic tube.Results The trend of the results from the finite element analysis and the real-ear test are similar.The maximum gain of sound pressure level of finite element analysis is approximately 24 dB in 4000 Hz,which is 6.8 dB higher than that of the real-ear test.Conclusions Finite element method is effective to analyze transaudient of the acoustic tube in earmold.关键词
耳模/导声管/声学特性/传声结构/有限元分析方法/声固耦合Key words
earmold/the acoustic tube/acoustic characteristics/transaudient/finite element method/acoustic-structural coupled分类
医药卫生引用本文复制引用
穆晨,吴涛,钱秀清..计算机辅助设计和有限元分析法在耳模声学特性研究中的应用[J].北京生物医学工程,2017,36(1):45-49,5.
