摘要
选取振型变化率作为标示量,对空间刚架进行结构损伤识别。应用ANSYS建立了空间刚架结构无损伤和有损伤的有限元模型,对空间刚架空间三向振型变化率进行计算。分析结果表明:一阶振型变化率能很好地对损伤位置进行识别,也能根据一阶振型变化率对损伤程度进行初步判断,为探索通过振型变化率识别空间刚架的结构损伤提供了一种可行的方法。
The structural damage identification method with vibration model parameters as standard amount plays an important role in structural damage preliminary identification.Structural damage identification on space rigid frame is based on variety rate of vibration mode.A space frame structure of no damage and injury finite element models is established with ANSYS,to analyze three-dimensional vibration mode variety rate of the space rigid frame.The results show that the variety rate of the first-order vibration mode can not only identify damage location,but also determine the initial degree of injury.A feasible method is provided by identifying the space frame structural damage of the vibration mode variety rate.
出处
《桂林理工大学学报》
CAS
北大核心
2011年第4期550-553,共4页
Journal of Guilin University of Technology
基金
国家自然科学基金项目(11172131)
内蒙古科技大学创新基金项目(2009NC040)
关键词
空间刚架
结构损伤
振型变化率
损伤识别
space rigid frame
structural damage
variety rate of vibration mode
damage identification
