频谱分析法在振动时效系统中的实验研究  

Experimental investigation of spectral analysis method in vibration stress relief system

作　　者：梁西昌 万熠[1] 朱振杰[1] 寇兆军 张东[2] 

机构地区：[1]山东大学机械工程学院高效洁净机械制造教育部重点实验室,山东济南250061 [2]山东大学齐鲁医院,山东济南250012

出　　处：《实验技术与管理》2015年第2期65-68,共4页Experimental Technology and Management

基　　金：国家自然科学基金资助项目(51175306);教育部新世纪优秀人才资助项目(NCET-11-0310);山东大学基本科研业务费专项资金资助项目(2014JC020)

摘　　要：振动时效中获取工件固有频率多采用时域扫频法,其具有扫频慢、易漏频等缺点。为克服这些缺点,将频谱分析法应用到振动时效系统中。首先通过Matlab建模分析证明了频谱分析法获取工件固有频率的可行性,从理论上表明此法可实现扫频快、不易漏频;然后采用VB和Matlab混编,开发了基于频谱分析法的振动时效系统;最后通过实验验证了此系统的有效性。实验表明:振动时效处理达到了时效工艺效果,频谱分析法较传统扫频法扫频时间减少10min以上,可获取高于扫频时电机激振频率的固有频率。The frequency sweeping method based on time domain is the general method to obtain natural frequency of workpiece used in vibration stress relief,which has disadvantages of time consuming and frequency missing.In order to overcome those disadvantages,the spectral analysis method was applied in the system of vibration stress relief.Firstly,Matlab modeling analysis proved that the spectral analysis method can be used to obtain the natural frequency in theory.Then a vibration stress relief system based on the spectral analysis was developed with VB and Matlab.Finally,experimental results show that time to identify natural frequency is reduced ten minutes more than the traditional method.Also the natural frequencies which are higher than the excitation frequency of electric motor can be obtained.

关 键 词：振动时效 频谱分析法 固有频率 残余应力 

分 类 号：TG156.92[金属学及工艺—热处理]