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free vibration
相关语句
  自由振动
    The Analysis of Free Vibration of Undretional Plate by Reciprocal Theorem
    单向板自由振动分析的功的互等定理法
短句来源
    Transverse free vibration of asymmetrically supported composite beams with embedded SMA wires and subjected to thermal load
    热载荷作用下非对称支承嵌入SMA丝复合材料弹性梁的横向自由振动
短句来源
    Free Vibration of Orthotropic Functionally Graded Cylindrical Shells
    正交各向异性功能梯度圆柱壳的自由振动
短句来源
    Free Vibration of Face\Core Debonded Composite Sandwich Plates
    含面\芯开裂损伤复合材料夹层板的自由振动
短句来源
    FREE VIBRATION OF SYMMETRICALLY LAMINATED ORTHOTROPIC PLATES
    正交各向异性复合材料对称层合板的自由振动
短句来源
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  free vibration
The scheme of gas-abrasive wear test of turbine compressor blades under free vibration of blades, including at high temperatures, is proposed.
      
Investigation of Fatigue Damage of 20Kh13 Structural Steel and its Compositions with Fused Coatings by the Free Vibration Method
      
It is shown that the dynamics of variation of the free vibration frequency of the samples is tightly related to the kinetics of fatigue damage.
      
Results of an analysis of the possibilities of diagnostics of fatigue damage of pieces from metallic materials and compositions with coatings obtained with the use of the free vibration method are given.
      
The perturbation can be proportional to any of the free vibration modes.
      
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The extent of application of the classical laminated plate vibration theory and laminated plate vibration theory with consideration of shear deformation is examined by means of the accurate solutions for the free vibration of simply supported and arbitrarily cross-ply laminated rectangular plates.In the classical laminated plate vibration theory, the influence of the inertia forces in two directions in the plane of the plate is also studied. We came to the conclusion that this influence can be neglected....

The extent of application of the classical laminated plate vibration theory and laminated plate vibration theory with consideration of shear deformation is examined by means of the accurate solutions for the free vibration of simply supported and arbitrarily cross-ply laminated rectangular plates.In the classical laminated plate vibration theory, the influence of the inertia forces in two directions in the plane of the plate is also studied. We came to the conclusion that this influence can be neglected.

本文用任意正交铺层的简支矩形板自由振动问题的精确解,通过计算研究了经典层板和考虑剪切的层板振动理论的适用范围;还研究了在经典层板横向振动理论中板平面内两个方向惯性力的影响问题,结论是可以忽略这种影响。

On the basis of classical laminated tbeory, by using half-finite element method, analysis of static, stabilizing and linear free vibration for laminated composite thin wall shells of revolution is done in this paper. Examples are computed and compared with other references. The numerical results obtained are satisfactory.

本文在经典层合板理论基础上,利用半有限元法,对叠层复合材料旋转薄壳进行了静力,稳定和自由振动分析。最后,编程计算了一些例题,并和有关文献进行了比较,其数值结果较好。

One of the most important characteristics of symmetric angle-ply laminates is that there exist two terms, D_(16) and D_(26), of bending twisting coupling, that makes it almost impossible to obtain, by us-ing traditional series expansion method, the exact solution. In this present paper, the two-step expansion (TSE) technique, proposed recently by the first author, is employed to give a general solution for bending, buckling and vibration of symmetric angle-ply rectan-gular laminates. The basic idea of TSE is...

One of the most important characteristics of symmetric angle-ply laminates is that there exist two terms, D_(16) and D_(26), of bending twisting coupling, that makes it almost impossible to obtain, by us-ing traditional series expansion method, the exact solution. In this present paper, the two-step expansion (TSE) technique, proposed recently by the first author, is employed to give a general solution for bending, buckling and vibration of symmetric angle-ply rectan-gular laminates. The basic idea of TSE is that: (1) let where X_m(x) and Y_n(y) are chosen in such a way that they satisfy part of the boundary conditions, i.e., displacement boundary con-ditions. C_(mn) is constants to be determined later; (2) The bending moment derived from W can be rewritten in terms of newly select-ed series of base functions which are orthogonal, complete and also satisfy the remain boundary conditions. Substituting bending moments into the governing equations, one may obtain C_(mn). For buckling and vibration problems, slight modification is needed to obtain C_(mn) and critical buckling load, or frequencies of laminates. Special attension is focused on the exact solutions of bending, buckling and vibration of symmetric angle-ply rectangular lamin- ates with four sides simply supported in the present paper. Nu-merical results are given for bending of laminates under uniform load, free vibration and buckling of rectangular lamintes with two opposite sides subjected to uniformly distributed in-plane compres-sive load. And from the numerical analyses, it might be conclud-ed that: (1)Increase of D_(16) and D_(26) results in enlargement of the deflection and decrease of both the fundamental frequency and the critical buckling load; (2) Variation of D_(16) and D_(26) may signifi-cantly influence the buckling mode. They may increase or decrease the half-wave number of the buckling mode for certain cases; (3) D_(16) and D_(26) may have influence on the vibration mode to certain extent, but less severely than on the buckling mode.

本文采用文献中的两步级数展开法,分析了四边简支对称角交铺设叠层板的弯曲、稳定与振动问题。文中给出了板受均布力作用的弯曲问题、振动问题以及只有二对边受均匀压力N_x的稳定问题的数值结果、并且讨论了弯曲-扭转耦合刚度D_(16)和D_(26)对挠度、临界荷载、基频以及与之对应的失稳波形和振型的影响。

 
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