CAJ | 학술논문

将悬臂梁的振动理论和矩阵摄动理论相结合,推出悬臂梁损伤或缺陷的识别公式.通过2根钢悬臂梁的试验,测出其损伤前后的频率,并根据测试结果对梁的损伤程度进行判定.结果表明,用摄动理论不仅可以识别悬臂构件的损伤位置,还可以定量求出其损伤程度.
장현비량적진동이론화구진섭동이론상결합,추출현비량손상혹결함적식별공식.통과2근강현비량적시험,측출기손상전후적빈솔,병근거측시결과대량적손상정도진행판정.결과표명,용섭동이론불부가이식별현비구건적손상위치,환가이정량구출기손상정도.
Combined vibration theory of cantilever beam with matrix perturbation theory, identification formula of damage or defection of cantilever beams is putforward. By experiment of two steel cantilever beams, their frequencies before and after damage are tested.According to tested results, damage extent of the beams can be judged. The results indicate that, not only damage location of the cantilever beams can be identified, but also damage degree of them can be calculated out quantitatively.