基于小波包分析的石油井架结构损伤识别试验研究  

Experimental Study on Damage Identification of Oil Derrick Based on Wavelet Packet Analysis

作　　者：邹龙庆[1] 付海龙[1] 崔晓华[1] 

机构地区：[1]大庆石油学院机械科学与工程学院

出　　处：《中国安全科学学报》2009年第10期42-45,共4页China Safety Science Journal

基　　金：黑龙江省自然科学基金资助(E200509)

摘　　要：通过对井架相似模型损伤工况模拟,提取其在承载时的振动响应信号,利用小波包变换方法获得小波包节点能量,得到基于归一化能量特征向量的损伤评价指标。研究表明:该指标可用于井架结构损伤位置的准确识别;将小波包能量分析与振动测试技术相结合的研究方法,为石油井架的损伤识别提供了新思路。By simulating the damage conditions of the similar model of oil derrick and collecting its vibrating signal under load, the node energy of wavelet packet is obtained with wavelet packet transform method. And then the damage evaluation index based on normalized energy eigenvectors is gained. The result study shows that the index can be used to identify damage locations of oil derrick accurately. This method, due to combining the wavelet packet energy analysis with vibration test technology, gives a new thinking to the damage identification of oil derrick.

关 键 词：石油井架 损伤 小波包分析 振动 裂纹 试验研究 

分 类 号：X937[环境科学与工程—安全科学] TE923.02[石油与天然气工程—石油机械设备]