CAJ | 학술논문

相比结构的频率，振型反应的信息更加丰富．振型曲率是对结构损伤十分敏感的一个指标；利用简支梁结构损伤前后的1阶振型曲率差对其进行损伤识别，对损伤位置有较好的识别效果，而利用高阶振型无法进行识别；对于简支梁损伤程度，利用振型曲率差只能进行定性的识别，随着损伤程度的加深，图形突变增大．
상비결구적빈솔，진형반응적신식경가봉부．진형곡솔시대결구손상십분민감적일개지표；이용간지량결구손상전후적1계진형곡솔차대기진행손상식별，대손상위치유교호적식별효과，이이용고계진형무법진행식별；대우간지량손상정도，이용진형곡솔차지능진행정성적식별，수착손상정도적가심，도형돌변증대．
Compared with the frequency of structure, the vibration reaction information is more abundant. The curvature of vibration is a sensitive index of structure damage. To identify the location of freely sup- ported beam damage, the difference of mode of vibration 1 is used,but the high rank mode of vibration can- not be used to identify. For the degree of damage, we can identify the qualitative only. With the damage degree deepening, the graph becomes more obvious.