获取界面响应不可测数据的频响探针关键技术研究  

Key Technology of Frequency Response Probe for Obtaining Unmeasured Data of the Interface Response

作　　者：王启利 王军[1,2] 孙中振 卢立新 

机构地区：[1]江南大学,无锡214122 [2]江苏省食品先进制造装备技术重点实验室,无锡214122

出　　处：《包装工程》2016年第1期6-10,共5页Packaging Engineering

基　　金：国家自然科学基金(51205167);中央高校基本科研业务费重点项目(JUSRP51403A);教育部博士点基金(20120093120014);江苏省青蓝工程(2014)

摘　　要：目的针对传统逆子结构理论在求解过程中界面响应难以实测的问题,提出一种利用频响探针技术来获取该界面响应的关键技术。方法首先基于该频响探针的动力学微分方程,从理论上推导了该频响探针技术的理论公式,然后对建立的二级单点刚性耦合系统进行了有限元数值验证,将利用频响探针技术预测得到的难测原点频响函数与有限元计算值进行比较,并将该预测值代入逆子结构理论公式中,得到了部件频响函数的预测值,将该预测值与有限元计算值进行了对比验证。结果预测值与有限元计算值高度吻合,验证了该理论的准确性。结论该频响探针关键技术在获取界面响应不可测数据方面,有很好的应用价值。Targeting at the problem that the traditional inverse sub-structuring method has difficulty in measuring the interface response in the solution process, a key technology employing frequency response probe was proposed to obtain this interface response. First, the theoretical equation for the frequency response probe technology was theoretically deduced based on the kinetic differential equation. Then finite element simulation was performed for a notch-containing structure. The origin frequency response function at this notch interface could not be easily measured due to limited physical space. The proposed frequency response probe technology was used to obtain the unmeasured origin frequency response function at this interface, and the predicted value was comparatively verified with the finite element calculation value. Good agreement was found between the predicted value and the finite element calculation value, verifying the accuracy of this theory. In conclusion, this frequency response probe key technology has great application prospect for obtaining unmeasured data from the coupling interface.

关 键 词：逆子结构 频响函数 频响探针 界面响应 

分 类 号：TB485.3[一般工业技术—包装工程] TB487