摘要
损伤指标的敏感性对结构损伤识别有着重要价值。本文通过数值仿真,指出曲率模态对于结构损伤敏感性上的不足,从而提出新的损伤指标即曲率模态变化率指标。仿真分析结果表明,曲率模态变化率比曲率模态更为敏感,而且对于模态节点和支座处节点损伤具有较高的敏感性。
The sensitivity of damage feature would be of great value to structural damage detection.The paper points out the deficient sensibility of curvature mode in damage detection through numerical simulation.Then a new damage feature（change rate of curvature mode） was proposed.The simulation result shows that the new feature is superior to curvature in the field of structural damage detection.Furthermore,it is still sensitive for the damaged location in the mode node and the support node.
出处
《华中科技大学学报（城市科学版）》
CAS
2010年第2期82-86,共5页
Journal of Huazhong University of Science and Technology
关键词
曲率模态
差分
损伤识别
curvature mode
difference
damage detection
