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工程结构在使用的过程中,由于载荷的作用将产生不同位置、不同程度的损伤。为了保证结构的安全,需要及时诊断出这些损伤的位置,以便对结构使用的可靠性进行合理的评估。提出了一种基于振型拟合的结构损伤诊断方法。它是用损伤系数作为诊断损伤的敏感因子。它不需要知道结构损伤前即完整结构的参数信息。文中详细讨论了这种方法,用仿真算例说明了这种方法的有效性和可行性。并用实验验证了这种方法的有效性和可行性。
In the process of using the structure of the project, different positions and degrees of damage will be generated due to the action of the load. In order to ensure the safety of the structure, it is necessary to diagnose the location of these damages in time so that the reliability of the structure can be reasonably evaluated. A method of structure damage diagnosis based on mode shape fitting is proposed. It uses the damage factor as a sensitive factor in diagnosing damage. It does not need to know the structural information of the complete structure before structural damage. This method is discussed in detail in this paper. Simulation results show the effectiveness and feasibility of this method. Experiments show the effectiveness and feasibility of this method.