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free vibration analysis     
相关语句
  自由振动分析
     FREE VIBRATION ANALYSIS FOR ELASTIC BEAM ON VISCOELASTIC FOUNDATION
     粘弹性地基上弹性梁的自由振动分析
短句来源
     Semi-analytical free vibration analysis of the space mega frame structure of the super high-rise buildings
     超高层建筑空间巨型框架的半解析自由振动分析
短句来源
     FREE VIBRATION ANALYSIS OF CYLINDRICAL SHELLS AND OPEN SHELLS WITH THICKNESS DISCONTINUITY AND DISSYMMETRY
     壁厚不连续不对称圆柱壳和开口壳的自由振动分析
短句来源
     Nonlinear Free Vibration Analysis Including Coupled Effect of Elastic Foundation for Moderate Thickness Rectangular Plates
     考虑地基耦合效应时中厚矩形板的非线性自由振动分析
短句来源
     FREE VIBRATION ANALYSIS OF COMPRESSED SYMMETRICALLY LAMINATED RECTANGULAR PLATES
     受压对称迭层矩形板的自由振动分析
短句来源
更多       
  固有振动分析
     The Finite Dynamic Element Method for Free Vibration Analysis of Bending Plates
     弯曲板固有振动分析的动态有限元素法
短句来源
     Free Vibration Analysis of Plate Using a Generalized Conforming Thick/Thin Element TMT
     广义协调厚薄板通用单元TMT的固有振动分析
短句来源
     Free Vibration Analysis of Simplified Parallel Rotor
     简单平行转子的固有振动分析
短句来源
     In this paper the concept of finite dynamic elements developed by Przemieniecki is applied to the free vibration analysis of bending rectangular plates.
     本文把Przemieniecki动态有限元的概念推广应用于弯曲矩形板的固有振动分析
短句来源
     THE IMPEDANCE MATRIX IN FINITE DYNAMIC ELEMENT METHOD FOR FREE VIBRATION ANALYSIS
     用于固有振动分析的动态有限元阻抗矩阵
短句来源
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  自振特性分析
     Free Vibration Analysis of Truss Bridges as Three-dimensional Struetures
     桁架桥空间自振特性分析
短句来源
     FREE VIBRATION ANALYSIS OF LONG-SPAN SUSPENSION BRIDGE
     公铁两用悬索桥自振特性分析
短句来源
  动力特性分析
     Railway Track Space Free Vibration Analysis by Finite Element Method
     直线轨道空间动力特性分析的有限单元法
短句来源
     Curved Track Space Free Vibration Analysis by Finite Element Method
     曲线轨道空间动力特性分析的有限单元法
短句来源

 

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      free vibration analysis
    This paper presents a formulation for the free vibration analysis of skew Mindlin plates with intermediate parallel stiffeners attached in two directions.
          
    The damped eigenfrequencies and the corresponding loss factors were computed based on frequency response analysis and then compared to the results obtained from free vibration analysis using the method of complex eigenvalues.
          
    Triangular sandwich finite elements (MPLW30) with 30 DOF have been developed for the static and free vibration analysis of sandwich plates with thin faces and low core shear modules.
          
    Plane finite element for static and free vibration analysis of sandwich plates
          
    Free Vibration Analysis of Rotating Nonlinearly Elastic Structures with Symmetry: An Efficient Group-Equivariance Approach
          
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    In this paper, Ritz method is applied to the free vibration analysis of plates. A suitable shape function for triangular plates is selected. According to the theoretical analysis and calculative data, this paper presents an approximate formula for calculating the vibration frequency parameters of rectangular plates with linearly varying thickness. The effects of changing Poisson's ratio upon the vibration frequency parameters are studied. For all the calculating results obtained from...

    In this paper, Ritz method is applied to the free vibration analysis of plates. A suitable shape function for triangular plates is selected. According to the theoretical analysis and calculative data, this paper presents an approximate formula for calculating the vibration frequency parameters of rectangular plates with linearly varying thickness. The effects of changing Poisson's ratio upon the vibration frequency parameters are studied. For all the calculating results obtained from this study are verified by those from experimental results and current literatures.

    本文用Ritz方法分析了变厚度三角板和矩形板的自由振动。首先为求解任意三角板的自由振动构造了一种合适的振型函数。在理论和计算成果的分析基础上提出了计算变厚度矩形板自由振动频率参数的近似公式。最后分析了泊松比对薄板自由振动的影响。文中各种计算结果得到了实验结果或文献成果的验证。

    In this paper the concept of finite dynamic elements developed by Przemieniecki is applied to the free vibration analysis of bending rectangular plates. As the static shape functions adopted in this paper satisfy governing differential equations and certain boundary conditions are exerted on the second order frequency correction shape functions, the equations of motion established for bending plates consist with those of the conventional analysis when high order frequency terms are neglected. It...

    In this paper the concept of finite dynamic elements developed by Przemieniecki is applied to the free vibration analysis of bending rectangular plates. As the static shape functions adopted in this paper satisfy governing differential equations and certain boundary conditions are exerted on the second order frequency correction shape functions, the equations of motion established for bending plates consist with those of the conventional analysis when high order frequency terms are neglected. It follows that inconsistent shortcomings exhibiting in the finite dynamic element formulations for membranes and plane strain plates may be overcome. Finally, dynamic stiffness and mass matrices developed in this paper are used to calculate the natural frequencies of the cantilever plates. And reasonable results are obtained.

    本文把Przemieniecki动态有限元的概念推广应用于弯曲矩形板的固有振动分析。文中构造了满足控制微分方程的静态形状函数阵,并对二阶修正形状函数阵加以某种限制。使得所建立之弯曲板的运动方程,在不计频率高阶项时,能退化到常规分析的形式。从而,克服了Gupta所建立之薄膜及平面应变板动态有限元不能与常规分析相协调的缺点。最后,利用所建立之矩形板元的动态刚度及质量矩阵,计算了悬臂板的固有频率,得到合理的结果,证明了方法的有效性。

    In this paper, strategies for developing dynamic analysis program DASOS-J (D)in design and analysis system of offshore structures are presented .This program is based upon Chinese developed JlGFEX program(a general purposed structural analysis program developed by Dalian Institute of Technology with multi-level substructuring and hierachically combination of multi-level substructuring loads), and has the features as follows : 1. Free vibration analysis by means of shifted progressive...

    In this paper, strategies for developing dynamic analysis program DASOS-J (D)in design and analysis system of offshore structures are presented .This program is based upon Chinese developed JlGFEX program(a general purposed structural analysis program developed by Dalian Institute of Technology with multi-level substructuring and hierachically combination of multi-level substructuring loads), and has the features as follows : 1. Free vibration analysis by means of shifted progressive subspace iteration method; 2 . Aseismic calculation by means of three dimensional response spectrum; Harmonic response by means of multi-level substructuring; Stochastic earthquake response by means of deterministic method; Time-history response analysis by means of linear multi-level substructuring method; 3. Time-history response analysis by means of non-linear multi-level substructuring method; 4 . Deterministic calculation of random response of irregular waves.The program is suitable to international rules in registration and a series of specific strategies and approaches have been carried out which have made DASOS-J (D) more convenient, more economical and more accurate.

    本文简述了在固定式海洋平台动力分析程序DASOS-J(D)中发展及使用的各种动力分析策略。它以结构分析通用程序JIGFEX为基础,全部动力分析都可采用三维多层子结构模型。在自振特性计算、确定性或随机性动力响应分析等一系列模块中,不但考虑了我国规范和国际惯例的要求,而且发展了一些新的有效方法,使动力分析更为准确、方便与经济。

     
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