In the theory of elastic thin plates, to solve the problem of rectangular overhanging plates with complicated boundary conditions is very hard for long.
对于具有复杂边界条件的矩形外伸板，在弹性薄板理论中是一个较难解决的问题。
In the theory of elastic thin plates, the bending of rectangular cantilever plates has long remained one of the most difficult problems.
在弹性薄板理论中，悬臂矩形板的弯曲，长期以来是最困难的问题之一。
The nonlinear dynamic and static analysis of rectangular plates with four free edges on elastic foundation is a rather complicated problem in the theory of plates.
弹性地基上四边自由矩形板动力和静力问题的非线性分析是板理论中的一个特别困难的问题。
In the theory of elastic thin plates, the bending of a free rectangular plate on the elastic foundation is also a difficult problem.
在弹性地基上的自由矩形板的弯曲，在弹性薄板理论中也是个难题。
The dynamic buckling of elastic structures, such as beams and plates, when subjected to an axial impact at one end, is studied in the present paper based on the theory of stress wave propagation.
本文借助于应力波传播规律研究了弹性梁板结构在冲击载荷作用下的动态屈曲问题。
Based on the theory of elastic dynamics, using the governing equation of thin plates, the reflection and transmission of flexural wave in thin plates with an array of periodic cracks were studied.
本文基于弹性动力学理论，分析研究了含有横向周期裂纹的平板中弯曲波的反射与透射问题。
In the first part of the paper, variation principles in the elastic and creep theory for prestressed concrete plates are derived respectively.
文中第一部分分别导出了预应力混凝土板在弹性理论和徐变理论中的变分原理。
As to elastic flexual plates under various boundary conditions, the undetermined parameters can be solved by the theory of minimization of least square method.
弹性弯曲薄板在各种边界条件下，用最小二乘法极值原理可以解算待定常数。
Based on the tiny deflection theory of the elastic thin plates, the differential equations of the cellular voided plates are given.
以弹性薄板小挠度理论为基础，推导出了蜂窝式空心板的微分方程。
Based on the tiny deflection theory of the elastic thin plates, the differential equations of the cellular voided plates are given.
以弹性薄板小挠度理论为基础，推导出了蜂窝式空心板的微分方程。
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