论文部分内容阅读
切削噪声研究所面临的首要困难是确定任意切削位置处的切削噪声功率以及切削过程中各个声辐射体对总体切削噪声的贡献。本文以相关输入下非保守耦合系统的统计能量分析为基础,提出了用于解决这些问题的输入功率分析原理(PIA)并对该原理进行了详细的论述,对于该原理所涉及参数的估计理论或测量技术以及建模等其他重要问题也进行了讨论和说明。作为PIA理论的一个应用实例,本文对切削一长700mm,厚10mm,直径300mm的圆柱壳体时的噪声进行了研究。研究结果表明,输入功率分析法是切削噪声研究的一个有效工具,也可以有效地应用于其他耦合系统的能量分析。
The primary challenge facing cutting noise research is determining the power of the cutting noise at any cutting location and the contribution of each of the radiators to the overall cutting noise during the cutting process. Based on the statistical energy analysis of the non-conservative coupled systems under correlated inputs, this paper presents the principle of input power analysis (PIA) for solving these problems and discusses the principle in detail. The estimation theory of parameters involved in this principle Or measurement techniques and other important issues such as modeling were also discussed and explained. As an application example of PIA theory, this paper studies the noise when cutting a cylindrical shell with a length of 700mm, a thickness of 10mm and a diameter of 300mm. The results show that the input power analysis method is an effective tool for the study of cutting noise and can also be effectively applied to the energy analysis of other coupled systems.