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constraint reaction
相关语句
  约束反力
     In addition, physical interperation of lagrange multipliers was explained and determination of constraint reaction forces was demonstated, taking revolute joint as an example.
     此外,本文还以铰链副为例说明了Lagrange乘子的物理意义及运动副约束反力的求取方法。
短句来源
     The crack tip close displacements are enforced on the deformed configuration as the increment constraints, crack tip force being constraint reaction force, strain energy release rates being equal to the sum of constraint displacement timing constraint force.
     将强制裂纹闭合的位移作为一种可变约束施加在变形后的裂纹尖端 ,约束反力作为裂纹尖端力计算 ,应变能释放率由裂纹尖端力和约束位移的乘积得到。
短句来源
  “constraint reaction”译为未确定词的双语例句
     This thesis focuses on the design proposal of some continuous curved girder bridge in Nei Meng, mainly discussing and analyzing the problems about deformation, internal force, constraint reaction of bearings and etc. Midas/Civil, a large-scale FEM software package is used to model and analysis.
     本文以内蒙某曲线梁桥设计方案为背景,采用有限元计算软件Midas/Civil对其进行建模和计算分析,旨在探讨分析连续曲线梁桥的变形、内力和支座反力等问题。
短句来源
     Then, with the FEM software Midas/Civil builds the computation model of some curved girder bridge in Nei Meng, calculates the distortion, internal force and the constraint reaction of bearings which produced by the action of dead load, pre-stressed load, concrete shrinkage and creep, system temperature and gradient temperature, summarizes the load effect rule by analyzing the estimateddata, and discovers the reason of curve girder bridge's "creeping" phenomenon, by this token, proposes some design preventive measures.
     接着,运用有限元软件Midas/Civil建立内蒙某曲线梁桥的计算模型,计算其在恒载、预应力荷载、混凝土收缩徐变、系统温度、梯度温度作用下产生的变形、内力和支座反力,对计算数据进行分析并总结出荷载效应的规律,从中找出曲线梁桥使用过程中出现“爬移”问题的原因,由此提出一些设计预防措施。
短句来源
  相似匹配句对
     On Chemical Reaction
     漫谈化学反应
短句来源
     Constraint Processing
     约束问题求解
短句来源
     The reaction mechanism was.
     探讨了该反应的反应机理,推导出4-OH-TMP催化氧化动力学方程。
短句来源
     On Liability Constraint
     略论责任约束
短句来源
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  constraint reaction
The unique construction of stress as a constraint reaction in a rigid body loaded on its boundary in a state of equilibrium is described through the use of the elementary variational problem of minimum potential energy.
      
We prove a representation theorem for such linear functionals which forms the basis for the existence of a constraint reaction (Lagrange multiplier) field.
      
(E.g., in an incompressible fluid, the viscosity could depend on the constraint reaction associated with the constraint of incompressibility.
      
In general, for such materials the material moduli that characterize the extra stress could depend on the constraint reaction.
      
For a tree system, the dynamical equations for eachj-th subsystem, composed of all the outboard bodies connected byj-th joint can be formulated without the constraint reaction forces in the joints.
      
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This paper investigates the motion of mechanical systems with non-ho-lonomic constraints under a given impulse. A percussion problem in the non-holonomic systems is converted into a percussion problem in the holo-nomic system with certain conditions. The equations of percussion motion of the system are given and the impulse of the generalized constraint reaction is found out. The final part of this peper gives an example to interpret the application of the new equations.

本文研究受有非完整约束的力学系统在给定打击冲量下的运动。将一个非完整系统的打击问题化成一个有条件的完整系统的打击问题。建立系统的打击运动方程。并求出广义约束反力的打击冲量。最后举例说明新方程的应用。

In present paper the concept of screw in classical mechanics is expressed in matrix form, in order to formulate the dynamical equations of multibody systems. The mentioned meihod can retain the advantages of the screw theory but avoid the shortcomings of the dual number. Combining the screw-matrix method with the tool of graph theory in Ro-berson/Wiitenberg formalism, we can expand rhe application of the screw theory to the general case of multibody system. For a tree system, the dynamical equations for each...

In present paper the concept of screw in classical mechanics is expressed in matrix form, in order to formulate the dynamical equations of multibody systems. The mentioned meihod can retain the advantages of the screw theory but avoid the shortcomings of the dual number. Combining the screw-matrix method with the tool of graph theory in Ro-berson/Wiitenberg formalism, we can expand rhe application of the screw theory to the general case of multibody system. For a tree system, the dynamical equations for each j-th subsystem, composed of all the outboard bodies connected by j-th joint can be formulated without the constraint reaction forces in the joints. For a nontrce system, the dynamical equations of subsystems and the kinematical consistency conditions of the joints can be derived using the loop matrix. The whole process of calculation is unified in matrix form. A three-segment manipulator is discussed as an example.

本文将经典力学中的旋量概念以矩阵形式表示,用以建立多刚体系统的动力学方程。这种旋量-矩阵方法能保留旋量融矢量与矢量矩于一体的优点,却避免以往对偶数记法的缺点。结合 Roberson/wittenburg的图论工具,旋量-矩阵方法的应用范围可扩大到一般多刚体系统。对于树形系统,利用旋量通路矩阵推导各个由第i铰联结的全部外侧刚体组成的第i子系统的动力学方程,可避免出现铰的约束反力,对于非树系统,则利用回路矩阵导出各子系统动力学方程及运动学相容条件,全部计算过程统一为矩阵运算,以操作机器人作为具体算例。

Motion equations for constrained mechanical systems were derived from Lagrange e-quation. Since mechanical systems are usually constrained, their motion equation will be a set of algebric-differential equations. The expressions for the resulting forces from spring-damper-actuator or torsional spring-damper-actuator elements were also presented in this paper. In addition, physical interperation of lagrange multipliers was explained and determination of constraint reaction forces was demonstated, taking...

Motion equations for constrained mechanical systems were derived from Lagrange e-quation. Since mechanical systems are usually constrained, their motion equation will be a set of algebric-differential equations. The expressions for the resulting forces from spring-damper-actuator or torsional spring-damper-actuator elements were also presented in this paper. In addition, physical interperation of lagrange multipliers was explained and determination of constraint reaction forces was demonstated, taking revolute joint as an example. Finally, application results using DAP program were also given in the paper.

本文根据Lagrange运动方程建立了受约束机械系统的运动方程。由于系统是受约束的,这类运动方程通常是一组代数-微分方程。对于含有弹簧-阻尼器-动作缸组件,或者扭簧-阻尼器-动作缸组件的系统,文中载有这些组件合力的表达式。此外,本文还以铰链副为例说明了Lagrange乘子的物理意义及运动副约束反力的求取方法。最后给出了用程序DAP进行分析的实例。

 
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