中国机械工程
中國機械工程
중국궤계공정
CHINA MECHANICAl ENGINEERING
2012年
7期
790-793
,共4页
王天辉%马立元%贾继文%李世龙
王天輝%馬立元%賈繼文%李世龍
왕천휘%마립원%가계문%리세룡
损伤识别%柔度矩阵%模态柔度曲率差%灰并联
損傷識彆%柔度矩陣%模態柔度麯率差%灰併聯
손상식별%유도구진%모태유도곡솔차%회병련
damage identification%flexibility matrix%modal flexibility curvature difference(MFCD)%gray relation
运用提出的灰并联模态柔度曲率差方法对子结构进行了损伤识别。结果表明:该方法仅需低阶模态参数即可进行损伤识别,不论对单一位置损伤,还是多种损伤共存,均具有损伤定位的能力,并能定性反映损伤程度。与已有的柔度差、柔度差值曲率两种柔度指标的数值模拟进行比较,显示了该指标检测损伤的有效性和优越性。
運用提齣的灰併聯模態柔度麯率差方法對子結構進行瞭損傷識彆。結果錶明:該方法僅需低階模態參數即可進行損傷識彆,不論對單一位置損傷,還是多種損傷共存,均具有損傷定位的能力,併能定性反映損傷程度。與已有的柔度差、柔度差值麯率兩種柔度指標的數值模擬進行比較,顯示瞭該指標檢測損傷的有效性和優越性。
운용제출적회병련모태유도곡솔차방법대자결구진행료손상식별。결과표명:해방법부수저계모태삼수즉가진행손상식별,불론대단일위치손상,환시다충손상공존,균구유손상정위적능력,병능정성반영손상정도。여이유적유도차、유도차치곡솔량충유도지표적수치모의진행비교,현시료해지표검측손상적유효성화우월성。
The damages of a substructure were identificated by the proposed identification method.Numerical simulation examples indicate that the damage location and severity in structures,with single damage or multiple ones,can be detected efficiently by GMFCD through only a few of the lower order modal parameters.Compared to the aforementioned flexibility indicators,such as the change in flexibility,flexibility differential curvature method,the effectiveness and advantages of GMFCD are shown.