The practically oriented treatment of dynamic structural buckling is undoubtely be hampered by two problems, how to adopte a existed criterion or advance a new criterion of dynamic stability in general sense, and how to develope a simple and appealing algebraic representation in terms of singularity of the tangental stiffness matrix .

實際解決動力穩(wěn)定問題的進程無疑受礙于怎樣選用已有的或發(fā)展新的一般意義上的動力穩(wěn)定性判定準則A片一区二区三区视频大全，以及怎樣發(fā)展簡潔的富有吸引力的切線剛度矩陣奇異性的代數(shù)描述方法。

The method is used to solve the approximate calculation of impact buckling ,and can be used to settl.

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Then, an approximate formula for the buckling loads is established, which is simple and efficient by means of comparison with the results computed by finite difference.

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An asymptotic series solution is constructed by the perturbation technique of deflection type for buckling and postbuckling behaviors of the cylindrical shells under external pressure.

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With the ordinary boundary conditions, the numerical solution was presented for the problem of axisymmetric buckling.

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For the beam buckling problem, this paper presents the Barycentric Lagrange interpolation collocation method to get the differentiation Matrix of unknown function.

采用重心Lagrange插值多項式建立未知函數(shù)的微分矩陣，采用配點法將梁的控制方程表示為代數(shù)方程組一级一级一级一级毛片。

Approximating unknown function by barycentric Lagrange interpolation which has advantages of higher precision and good numerical stability, the barycentric interpolation collocation method for analyzing deformation and buckling load of ring is presented.

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The theoretical and experimental research on the elasto-plastic buckling strength of the web with longitudinal stiffener in I-section steel girder under pure bending was made using energy method and the influence of stiffness of longitudinal stiffener on buckling coefficient of the girder web was analyzed.

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Design constraints on shell buckling and local buckling of flat ring-stiffeners are considered.

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According to the method, the effect functions of imperfections about buckling loads of the composite sheet—space lattice shell and she single layer lattice shell are obtained. These effect functions can be simply used to determine the nonlinear buckling loads of engineering structures with imperfections.

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