摘要
结构动态特性检测是裂纹检测的一种很有效的方法。从裂纹模型、损伤指标和损伤识别方法3个方面介绍了裂纹检测的结构动力学方法发展现状,分析了常用裂纹模型的优缺点,讨论了各种损伤指标对裂纹的灵敏度。从损伤识别方法应用情况来看,主要瓶颈在于对精确有限元模型的依赖以及受测试能力的制约。
The structural dynamic characteristics identification is an effective method to detect the cracks. The latest development of the structural dynamics methods of crack identification is presented in three aspects, i.e. crack model, damage index and damage identification method. The merits and defects of crack models in common use are analyzed and the sensitivity of the damage indexes to any cracks discussed. It is indicated that the bottleneck in damage identification lies in the dependence on the accurate fitrite element model and the restriction of testing ability.
出处
《机械制造》
2006年第12期56-60,共5页
Machinery
基金
国家自然科学基金(编号:50275025)
关键词
裂纹识别
损伤检测
监测
结构动力学
振动特性
Crack Identification Damage Detection Monitoring Structural Dynamics Vibration Characteristics
