广西科技大学学报
廣西科技大學學報
엄서과기대학학보
Journal of Guangxi University of Science and Technology
2015年
3期
84-89
,共6页
广义Maxwell阻尼器%扩阶复模态%阻尼器阻尼力%减振结构
廣義Maxwell阻尼器%擴階複模態%阻尼器阻尼力%減振結構
엄의Maxwell조니기%확계복모태%조니기조니력%감진결구
generalized Maxwell damper%expanding complex mode method%damper force%damping structure
针对结构带有广义Maxwell阻尼器体系在地震作用下Maxwell阻尼器阻尼力的计算进行分析。首先建立设置广义Maxwell阻尼器的单自由度结构一般运动方程;为获含有阻尼力项的方程,本文运用扩阶法将结构的二阶变频运动转化为一阶时不变线性状态方程组,利用复模态法进行求解,在过滤白噪声的作用下获得阻尼力的解析式,并给出算例;从而建立单自由度减震结构计算Maxwell阻尼力的方法,为减震结构阻尼器的设计建立基础。
針對結構帶有廣義Maxwell阻尼器體繫在地震作用下Maxwell阻尼器阻尼力的計算進行分析。首先建立設置廣義Maxwell阻尼器的單自由度結構一般運動方程;為穫含有阻尼力項的方程,本文運用擴階法將結構的二階變頻運動轉化為一階時不變線性狀態方程組,利用複模態法進行求解,在過濾白譟聲的作用下穫得阻尼力的解析式,併給齣算例;從而建立單自由度減震結構計算Maxwell阻尼力的方法,為減震結構阻尼器的設計建立基礎。
침대결구대유엄의Maxwell조니기체계재지진작용하Maxwell조니기조니력적계산진행분석。수선건립설치엄의Maxwell조니기적단자유도결구일반운동방정;위획함유조니력항적방정,본문운용확계법장결구적이계변빈운동전화위일계시불변선성상태방정조,이용복모태법진행구해,재과려백조성적작용하획득조니력적해석식,병급출산례;종이건립단자유도감진결구계산Maxwell조니력적방법,위감진결구조니기적설계건립기출。
The damping force of the structure with generalized Maxwell damper is studied under earthquake action. First, the general equation of motion of a single degree of freedom structure with generalized Maxwell damper is established;by using the expansion method, the two order frequency equation of motion is transformed into the first order linear time invariant state equations and then the equation containing damping force is obtained, by using complex modal method to solve, then the analytical formula of damping force is got under the action of filtering white noise and the example is given. Accordingly, the calculation method of Maxwell damping force of a single degree of freedom structure is established and the foundation for damper designing of damping structure is given.