查询词典 variation principle

Energy variation principle is a good method to solve the shear lag effect.

能量变分法是求解剪力滞问题的一个有效方法。

Based on the continuity equation of groundwater and the normal velocity formula of free surface, taking element e as a subdomain R in the seepage flow domain R, according to variation principle, the finite element equation of seepage field can be obtained.

由地下水的连续方程和自由面的法向流速公式，把单元e作为渗流求解区域R上的一个子域ΔR，根据变分原理，得到岩土体渗流场有限元方程。

The equations of a high-speed rotating plate are obtained using Jourdain＇s velocity variation principle and the finite element method and MTA are used for discretization.

基于Jourdain速度变分原理，先推导出做高速旋转薄板的动力学连续变分方程，再用有限元法对柔性薄板进行离散。

And the conservation laws of moment and momentum are obtained by the combining the tiny element analysis method in continua mechanics with variation principle in analytical mechanics.

论文摘要：本文在建立时变边界挠性体的动力学方程时，将并入的质量对挠性体的作用当作时变边界上的表面力，并将连续介质力学中的微元分析法和分析力学中的变分原理相结合，导出了时变边界的变质量刚体的动量和动量矩矩方程。

Use the cubic function to be the displacement funtion, then base on the energy variation principle, the natural vibration equation is derived, which considers the pressure force and the boundary conditions of the compressed bar.

采用三次函数作为压杆单元的位移函数，基于能量变分原理，构造了一种可以考虑初始内力及边界条件的压杆单元。

Furthermore the existence condition and the variation principle of the differential equation are discussed, and the theory gist of the step-time technologies is presented.

应用相关的势算子理论对抛物型偏微分方程的泛函存在条件及变分定理进行了较系统的讨论，进而指出了"时间步进有限元法"各种处理方法的理论依据。

This dissertation establishes numerical methods in structural analysis on the basic of variation principle, finite member element method, spline function, etc.

本文利用变分有限元法、样条函数等，提出了薄壁箱梁结构分析的数值理论和方法。

The variation principle of rigid plastic material wi th void degradation was demonstrated.

刚性塑料材料wi th空隙退化的变异原则被展示了。

The general variation principle of tension of web offset presses while running was discussed. The mathematical model of tension control was established. Based on the mathematical model and Matlab software, the tension control system simulation program was developed.

对卷筒纸印刷机在印刷过程中张力变化的一般规律进行了研究，建立了较符合实际情况的张力变化的一般规律数学模型，并用Matlab软件对模型进行仿真分析。

The content of water, starch and polysaccharide of 20 pumpkin varieties with two growth periods were measured so that the variation principle of the content of water and starch was discussed, and then, the result was tested with 75 pumpkin varieties.

方法］以为个不同品种成熟南瓜和两个品种南瓜的不同生长期为材料，主要测定水含量、淀粉含量与可溶性糖含量等，来找出淀粉含量与水含量等的变化规律，并对75个不同品种成熟期的南瓜进行脸证。

Do not gum up the work by telling mother what we are going to do .

别告诉母亲我们要干的事，那会把事情搞糟的。

In recent years, application of the partial prestressed concrete beam s is developed.

近年来，随着部分预应力砼梁应用的推广，发现我国规范所采用的名义拉应力法的计算结果不稳定。