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冲击约束
相关语句
  impulsive constraints
     Collision Motion of Multibody Systems With Impulsive Constraints
     多体系统在冲击约束下的碰撞运动
短句来源
     The equation of colli-sion motion for multibody systems which are subjected to impulsive constraints arederived.
     导出了多体系统在冲击约束下的碰撞运动方程;
短句来源
  “冲击约束”译为未确定词的双语例句
     Study of Confinement Layer and Absorbing Layer in Laser Shock Processing
     激光冲击约束层和吸收层的研究
短句来源
     The constia ned forces and also the impulsive constrained forces of first order linear and nonlinear nonholonomic systems and holonomic systems are discussed.
     并讨论了一阶非线性非完整系统,一阶线性非完整系统和完整系统的约束反力,以及冲击约束反力。
短句来源
  相似匹配句对
     Study of Confinement Layer and Absorbing Layer in Laser Shock Processing
     激光冲击约束层和吸收层的研究
短句来源
     Study on properties of overlay in laser shock forming
     激光冲击成形约束层性能的研究
短句来源
     The Shock of Photograph
     影像的冲击
短句来源
     programming and constrained D.
     规划和约束D.
短句来源
     Punishment to the violation of thecontract are three kinds: fine, mortgage on the loan and law restrain.
     法律约束
短句来源
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  impulsive constraints
The equations of motion of a system under the action of the impulsive constraints
      
In order to solve the problem of motion for the system with n degrees of freedom under the action of p impulsive constraints, we must solve the simultaneous equations consisting of n+p equations.
      
Therefore, only n equations are necessary to solve the problem of impact for the system subjected to impulsive constraints.
      
This is based on the use of a class of impulsive constraints, the so-called inert constraints.
      
Spatial Formulation of Elastic Multibody Systems with Impulsive Constraints
      
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In practical engineering, it is usually necessary to find out the constrained force. The moving rule required to realize in controlling system is considered to be a constraint and the constrained forces are controlling forces having to act on the system. Both the movement and the constrained forces may be solved by Routh's equation. The constrained forces are contained in the inderminate multipers, which appear in every equation. Introducing quasi-velosity in this paper, the equation to determine the movement...

In practical engineering, it is usually necessary to find out the constrained force. The moving rule required to realize in controlling system is considered to be a constraint and the constrained forces are controlling forces having to act on the system. Both the movement and the constrained forces may be solved by Routh's equation. The constrained forces are contained in the inderminate multipers, which appear in every equation. Introducing quasi-velosity in this paper, the equation to determine the movement and the ndeterminate multipers may be separated from Routh's equation, thus obtaining the expression of every indeterminate multiper. The constia ned forces and also the impulsive constrained forces of first order linear and nonlinear nonholonomic systems and holonomic systems are discussed.

在工程实际中,求解约束反力往往是必要的。在控制系统中,要求实现的运动规律可以看作约束,而约束反力就是必须作用的控制力。Routh方程既能求解运动又能求解约束反力。约束反力包含在不定乘子中,而不定乘子出现在每个方程中。本文引进伪速度将决定运动的方程和不定乘子从Routh方程中分离开来,得到每个不定乘子的表达式;并讨论了一阶非线性非完整系统,一阶线性非完整系统和完整系统的约束反力,以及冲击约束反力。

Two types of impulsive constraints which are applied to multibodysystems are analyzed. They are constraints of instantaneous imposition (or relax-ation)and of constraint curved-surface with sudden change. The equation of colli-sion motion for multibody systems which are subjected to impulsive constraints arederived. Finally, an illustrative example is given.

分析了作用于多体系统的两种典型冲击约束:突然强加(解除)的约束和约束曲面具有突变的约束;导出了多体系统在冲击约束下的碰撞运动方程;最后给出了一个说明性例题.

A general model for impact analysis is presented. Based on the continuum theory, the frictional impact constraint is considered with co moving coordinates, and the virtual work principle is utilized to formulate the governing equations. The theory and algorithms can be used as the basis of impenetrable contact impact analysis. A low velocity impact analysis has been accomplished by using FEM algorithms developed in this paper. An augmented Lagrange iteration with adaptive penalty is proposed to ensure the...

A general model for impact analysis is presented. Based on the continuum theory, the frictional impact constraint is considered with co moving coordinates, and the virtual work principle is utilized to formulate the governing equations. The theory and algorithms can be used as the basis of impenetrable contact impact analysis. A low velocity impact analysis has been accomplished by using FEM algorithms developed in this paper. An augmented Lagrange iteration with adaptive penalty is proposed to ensure the accuracy and to depress the oscillation of the numerical algorithm. Some examples demonstrate the efficiency of the model and the analysis methods.

提出了一种通用的冲击分析模型 ,该模型采用连续介质理论描述 ,用拖带坐标定义摩擦冲击约束 ,用虚功原理定义冲击控制方程 ,可以作为不可刺穿型冲击问题的有限元求解基础。在此模型基础上 ,针对低速冲击问题 ,给出了采用自适应罚函数增广 Lagrange迭代处理接触力的有限元求解方法 ,既保证计算精度 ,又有效抑制算法震荡 ,并用算例进行了验证。

 
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