摘要
在简述试验模态分析的基本原理后，通过模型井架的模态试验，获得了可靠的频响函数，并应用模态参数识别技术，获得了模型井架的动态特性参数，指出模型井架在动态特性方面存在的薄弱环节，包括上部抗扭刚度不足和中部及两前立柱抗弯刚度不足。
After a brief introduction of the basic principle of test modal analysis, by means of the test of modal parameters of themast model, reliable frequency response function is obtained, and by using the modal parameter identifying technique, thedynamic characteristic parameters of the mast model is acquired. The vulnerable spots of the mast in terms of the dynamiccharacteristic are pointed out, including insufficient torsional rigidity on the upper part and insufficient bending rigidity on themiddle part and of the two front columns.
出处
《石油机械》
北大核心
1995年第9期22-25,33,共5页
China Petroleum Machinery
关键词
井架
模型试验
模态分析
采油井
mast
model
test
frequency response
frequency function
modal analysis
