查询词典 first order theory

Based on the first order shear theory and the Von Karman non-linear assumption , the corresponding finite element formula was developed , and an appropriate progressive failure criterion was adopted.

基于一阶剪切理论和 Von Karman非线性变形假设建立了含分层损伤复合材料 A GS结构的有限元模型，并推导了考虑温度和湿度效应的 AGS结构有限元列式，同时给出了材料破坏准则。

After introducing the mechanism of seismic displacement control with dampers, 3 kinds of assessment functions for seismic response control effect are formulated based on the seismic response characteristics of longspan suspension bridges and a new optimal placement method of dampers using penalty function and first order optimization theory is proposed.

从地震位移控制的原理出发，根据大跨悬索桥结构地震响应的特点，建立了其地震位移控制效果的3种评估函数，提出了一种基于罚函数和一阶优化原理的阻尼器最优布置方法。

Based on deformation assumption and Mindlin first order shear deformation theory, a finite element method was proposed for free vibration analysis of the composite sandwich plates with debonded damage along the face/core interface.

基于Zig-Zag变形假定和Mindlin一阶剪切理论，提出了具有面板和芯体开裂损伤复合材料夹层板自由振动的有限元分析方法。

In chapter 3, on basis of the first order shear deformation theory, a series of composite laminated beam elements are developed, which are plied transversely, longitudinally and/or assembled both, respectively. A geometric nonlinear element stiffness matrix for the transversely plied laminated beam is presented.

第三章首先介绍了目前已有的在小变形下的横向层合梁、纵向层合梁和组合层合梁理论，并推导了其相应的有限元列式，然后又基于Von-Karman大挠度理论的几何关系，推导了大变形下横向层合梁的单元切线刚度阵。

In chapter 2, a tangent stiffness matrix formula of four-node C〓 element for the laminated plate is deduced, which is based on the first order shear deformation theory and the Von-Karman nonlinear deformation assumption.

第二章首先给出了在一阶剪切效应和Von-Karman大挠度理论下复合材料层合板的几何关系，然后基于单元域内和边界一致概念，推导了在大变形下"无剪切闭锁"的层合板单元切线刚度阵，并给出了复合材料层合板后屈曲分析的有限元平衡方程。

Then,the first order second moment theory in structural reliability analysis,i.e.,the checking point method was introduced to compute the two failure modes respectively,and two corresponding reliability i...

将两种失稳模式视为串联系统，由逐步等效平面法计算结构体系可靠度指标，最后由结构体系可靠度指标计算出该挡土墙稳定性的结构体系失效概率。

Using the first order shear deformation theory for plate and mechanical-electro coupled variational equation, the two dimensional dynamic finite element formulation containing the effect of pressure in the cavity was derived.

数值分析了在不同的结构和声腔共振频率下主动控制效果，结果表明通过合适地布置压电片，能够很好地控制腔体的声压与位移。

Considering the interaction between theΓvalley and the folded L valley, we calculated the dependence of theΓvalley of ordered GaInP on pressure using first order perturbation theory.

在考虑有序GaInP中Γ能谷和折叠到Γ点的L能谷相互作用的基础上，用一阶微扰理论计算了有序GaInP直接带隙发光峰峰值能量随压强的变化，计算结果和两个样品的实验结果符合得很好。

A rectangular finite element for laminated plate with bonded and/or embedded piezoelectric sensors and actuators is developed based on the variational principle and the first order shear deformation theory.

基于变分原理和一阶剪切理论，本文建立了一种新的机电耦合矩形有限单元，该单元具有四个节点20个位移自由度，电自由度为单元中的压电铺层层数。

Moreover, students should know some basic theories of initial value problem of differential equation, stability theory and first order linear or quasi-linear differential equations.

稳定性理论或一阶线性偏微分方程有所认识。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。