We give a review of the researches on axially moving materials system and the researches based on galerkin approach on dynamics of viscoelastic structures 綜述了軸向運動弦線振動及基于galerkin截斷的粘彈性結構動力學的研究進展和研究成果。
Abstract : the characteristics of the eigenvalue problem of general viscoelastic structure are analyzed and its modal analysis method is put forward in this paper 文摘:分析了一般粘彈結構特征值問題的特點,建立了一般粘彈結構的模態(tài)分析方法。
Compared with the previous modal analysis method of viscoelastic structure, this method is suitable for more common viscoelastic structue, does not involve the viscoelastic constitutive relation term and involves only one sort of modal vector 與粘彈結構已有的模態(tài)分析方法相比,該方法通用于更一般的粘彈結構,在形式上不涉及粘彈本構關系項,并只涉及一種模態(tài)向量。
The work in this dissertation mainly consists of two parts . in the first part, the dynamic response of nonlinear structures with uncertain physical parameters is studied by means of subsection linearization method and equivalent random systems method, separately . in the second part, a method for analyzing the response of viscoelastic structures with uncertain physical parameters is proposed, with fem in space domain and discrete method in time domain 本文的研究工作主要由兩個部分組成;第一部分是分別用分段線性化方法和等效隨機系統(tǒng)方法對含隨機參數非線性結構動態(tài)響應統(tǒng)計量的求解;第二部分是建立了用擴階隨機有限元方法求解含隨機參數粘彈性問題的計算模型。