CAJ | 학술논문

根据频响函数的Neumann级数展开式，提出了悬臂结构的损伤识别方法。首先根据频响函数的Neumann级数展开式，推导了损伤参数与频响函数的关系式，以此为基础建立损伤识别方程组；其次，考虑到噪声影响，求解时采用了多频率点的最小二乘法，以减小由噪声引起的误差；最后用一个悬臂结构模型对所提方法进行了验证。
근거빈향함수적Neumann급수전개식，제출료현비결구적손상식별방법。수선근거빈향함수적Neumann급수전개식，추도료손상삼수여빈향함수적관계식，이차위기출건립손상식별방정조；기차，고필도조성영향，구해시채용료다빈솔점적최소이승법，이감소유조성인기적오차；최후용일개현비결구모형대소제방법진행료험증。
Based on the Neumann series expansion of frequency response function, a damage identification method of cantile?ver structure was presented. Using the Neumann series expansion of frequency response function, the relationship between damage parameters and the frequency response function was firstly derived to obtain the damage detection equation. Considering the influ?ence of noise, the least square method of multi?frequency points was used to reduce the error caused by the noise. Finally, the effec?tiveness of the proposed method was verified through a cantilever structure model.