动态载荷的频域识别方法  

Dynamic Loading Identification in Frequency Domain

作　　者：智浩[1] 文祥荣[1] 缪龙秀 林家浩[2] 

机构地区：[1]北方交通大学机械与电气工程学院,北京100044 [2]大连理工大学力学系,辽宁大连116023

出　　处：《北方交通大学学报》2000年第4期5-10,共6页Journal of Northern Jiaotong University

摘　　要：将动态载荷识别的频域方法归结为统一的形式 ,不论是随机激励还是确定性载荷 ,均可利用实测的系统响应及响应与激励间的广义传递矩阵进行动载荷的识别 .通过对识别过程中精度影响因素的分析 ,提出利用计算机模拟方法选择响应测点以提高识别精度的方法 ,有利于工程应用 .The methods for dynamic loading identification in frequency domain are summarized in unified form. That is, whether random excitations or determined loading can be identified with similar method by the measured responses of system and the generalized transfer matrix of system responses and excitations. Moreover, the precision influence factor of identification has been analyzed and a computer simulation method for selecting measured response points is introduced to improve the identification precision, which is valuable for engineering applications.

关 键 词：识别 动态载荷 频域法 工程动力学 

分 类 号：TB122[理学—工程力学]