| 声辐射模态下测量点分布对声场重构影响的研究 |
| |
| 引用本文： | 李秀莲,赵东升. 声辐射模态下测量点分布对声场重构影响的研究[J]. 内燃机工程, 2010, 31(1) |
| |
| 作者姓名： | 李秀莲 赵东升 |
| |
| 作者单位： | 1. 江苏技术师范学院,机械工程学院,常州,213001;江苏大学,汽车与交通工程学院,镇江,212013
2. 江苏大学,环境学院,镇江,212013;常州轻工职业技术学院,机械工程系,常州,213164 |
| |
| 基金项目： | 江苏省高校自然科学基础研究(自筹经费)项目(08KJD460009) |
| |
| 摘 要： | 应用声辐射模态理论,以振动平板为研究对象,针对声场重构中测量点的分布对重构声压的影响进行研究。数值计算表明:在测量点数和模态展开数既定的情况下,通过改变测量点的坐标值,使测量点非均匀地分布在测量面上,这样重构出的效果远远优于测量点均匀分布且使用Tikhonov正则化方法重构出的效果。研究结果表明:测量点的非均匀性布置,可以达到减小测量点数和模态展开数,扩大重构频率区间,简化计算程序,提高重构精度的目的。
|
| 关 键 词： | 内燃机 声辐射模态 声场重构 测量点分布 |
Study on Influence of Measurement Point Distribution on Reconstruction of Acoustic Fields Based on Acoustic Radiation Mode |
| |
| LI Xiu-lian,ZHAO Dong-sheng. Study on Influence of Measurement Point Distribution on Reconstruction of Acoustic Fields Based on Acoustic Radiation Mode[J]. Chinese Internal Combustion Engine Engineering, 2010, 31(1) |
| |
| Authors: | LI Xiu-lian ZHAO Dong-sheng |
| |
| Affiliation: | 1.School of Mechanical Engineering/a>;Jiangsu Teachers University of Technology/a>;Changzhou 213001/a>;China/a>;2.School of Automobile and Traffic Engineering/a>;Jiangsu University/a>;Zhenjiang 212013/a>;3.School of the Environment/a>;4.Department of Mechanical Engineering/a>;Changzhou Institute of Light Industry Technology/a>;Changzhou 213164/a>;China |
| |
| Abstract: | The influence of measurement point distribution on reconstruction of acoustic pressure fields was researched on a vibrating plate,based on the theory of acoustic radiation mode.The calculated results show that when the measurement point number and the mode expansion number are determined,the reconstruction effect of uneven measurement point distribution by means of changing the coordinate value of measurement points is much better than that of uniform measurement point distribution together with Tikhonov re... |
| |
| Keywords: | IC engine acoustic radiation mode reconstruction of acoustic fields measurement point distribution |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
