基于模态应变能方法的简支梁损伤识别研究

Study on Damage Identification of Simply Supported-Beam Based on Modal Strain Energy Method

以一简支梁为例,用有限元软件ANSYS建模并进行模态分析,用模态应变能方法对其进行损伤识别研究,将模态应变能变化率方法与模态应变能指标结果对比分析,说明此模态应变能指标是有效的损伤识别参数。

In present study, ANSYS finite element method is utilized to analyze the modal of simply supported beam and then the study on damage identification is performed based on modal strain energy method. The compara- tive analysis of results are obtained by modal strain energy changes rate method and modal strain energy index dem- onstrates that modal strain energy index is an effective damage identification parameter.