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无穷小位移
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  “无穷小位移”译为未确定词的双语例句
     The geometrical stiffness of first-order infinite mechanism is obtained by the relative motions of nodes, which is just different from the general structure.
     一阶无穷小位移机构的几何刚度的获得是通过体系的相对机构位移而获得的,这与传统结构的几何刚度的概念是完全不同的。
短句来源
     Determination of Stiffening for First-order Infinite Mechanism
     一阶无穷小位移机构的刚化判定
短句来源
     S~(n-1), a special moving frame and the formula for the infinitesimal change of the frame (Theorem 1). Then we obtain a necessary and sufficient condition for ? (s)to lie completely on S~(n-2) (Theorem 2).
     在给出一个特别的活动标架及其无穷小位移公式(定理1)之后,我们证明了高维球面曲线落于赤道上的一个充要条件(定理2).
短句来源
     So the studies on the mechanism system are very important.
     因此,研究一阶无穷小位移机构的刚化问题是非常重要的。
短句来源
     Maxwell rules deal with geometrical stability only from the topology information of system, which apparently cannot be used as the rule of the stiffness determination standards of the first-order infinite mechanism.
     Maxwell准则只从体系的拓扑关系来考虑体系的几何稳定性,这显然不能应用于一阶无穷小位移机构的刚化判定问题。
短句来源
  相似匹配句对
     Computation and analysis of infinitesimal mechanism
     一阶无穷小机构位移计算分析
短句来源
     AN ANALYSIS OF DISPLACEMENT
     位移分析
短句来源
     DISPLACEMENT CURRENT
     位移电流
短句来源
     Determination of Stiffening for First-order Infinite Mechanism
     一阶无穷小位移机构的刚化判定
短句来源
     A Representation Formula of C-Infinitesimal Generator
     C-无穷小生成元的表示式
短句来源
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  infinitesimal displacement
The method of asymptotic integration is used and a second-order solution, for infinitesimal displacement components and incremental pressure, is obtained in terms of the long-wave amplitude.
      
The material deformation is described by the J2 flow theory of plasticity with infinitesimal displacement gradients.
      
The infinitesimal displacement gradients are connected to the stress increments by thePEC.
      
Assume that force f and moment m are applied to the moving object and that an infinitesimal displacement q occurs, as illustrated in Figure 3.
      
For this configuration, an additional infinitesimal displacement can be induced without change in the applied critical stress.
      
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We study, in this paper, the properties of a curve ?(s)in S~(n-1), a sphere in 1R~n. First, we give, on ?(s)?S~(n-1), a special moving frame and the formula for the infinitesimal change of the frame (Theorem 1). Then we obtain a necessary and sufficient condition for ?(s)to lie completely on S~(n-2) (Theorem 2). Finally, we turn to the curves in S~?, and give several results which characterizes the curvatures of a curve in S~?.

本文研究高维球面曲线的性质.在给出一个特别的活动标架及其无穷小位移公式(定理1)之后,我们证明了高维球面曲线落于赤道上的一个充要条件(定理2).我们还给出了高维球面曲线的几个特征性质.

The first-order infinite mechanism is a special kind of space structure, which possesses the character of mechanism. From the view point of engineering structure, only the system which has no mechanism and possesses geometrical stiffness can be used as a bearing load structure. The geometrical stiffness of first-order infinite mechanism is obtained by the relative motions of nodes, which is just different from the general structure. So the studies on the mechanism system are very important. Maxwell rules deal...

The first-order infinite mechanism is a special kind of space structure, which possesses the character of mechanism. From the view point of engineering structure, only the system which has no mechanism and possesses geometrical stiffness can be used as a bearing load structure. The geometrical stiffness of first-order infinite mechanism is obtained by the relative motions of nodes, which is just different from the general structure. So the studies on the mechanism system are very important. Maxwell rules deal with geometrical stability only from the topology information of system, which apparently cannot be used as the rule of the stiffness determination standards of the first-order infinite mechanism. In this paper, based on the matrix decomposition theory and the concept of first-order infinite mechanism, the boundary condition of equilibrium was presented, and the stiffness determination of first-order infinite mechanism was analyzed. The equally condition of system stiffening and the determination method are given by using energy-work principle. By a few numerical examples, the conclusion and the method presented in this paper are proved.

一阶无穷小位移机构是一类具有机构性能的特殊的新型空间结构,从工程结构的角度考虑,只有能够消除机构性而获得几何刚度的体系才是可承载的结构体系。一阶无穷小位移机构的几何刚度的获得是通过体系的相对机构位移而获得的,这与传统结构的几何刚度的概念是完全不同的。因此,研究一阶无穷小位移机构的刚化问题是非常重要的。Maxwell准则只从体系的拓扑关系来考虑体系的几何稳定性,这显然不能应用于一阶无穷小位移机构的刚化判定问题。本文基于矩阵向量空间分解的理论和一阶无穷小位移机构的概念,在体系的平衡矩阵引入了边界条件,对一阶无穷小位移机构的刚化判定问题进行了分析,运用功能原理给出了一阶无穷小位移机构刚化的等价条件和判定方法。通过几个数值算例验证了本文结论和方法是正确、可靠的。

 
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