由于本方法没有涉及任何刚体运动约束，所以适用于各种非刚体运动的特征点对应。
Because this method is not based on the constraint of body rigidity, it can solve the correspondence problem of nonrigid body motion.
这里的根本问题是，人人都忘记了一个无约束系统具有弹性体模态以及刚体模态。
The basic problem here is that everyone forgot that an unconstrained system has flexible modes AND the rigid body modes.
由于此文的方法没有建立在运动的刚性约束之上，所以该方法同样适用于各种非刚体运动的特征点对应。
Because this method is not based on the constraint of rigidity, it can solve the correspondence problem of nonrigid motion.
接下来，你可以添加额外的约束来阻止模型的刚体运动，然后消除此选项重复运行算例来解决此问题。
You can then apply additional restraints to prevent rigid body motion. Repeat the analysis without activating this flag after fixing the problem.
针对某轿车建立了基于多刚体理论的侧面碰撞乘员约束系统动态仿真模型，并依据试验结果进行了模型的有效性验证。
The dynamic simulation model based on the multi-rigid-body theory of the passenger restraint system for side impact of a car is created, and its validity is verified by tests.
文中根据刚体动力学及动量守恒定理，建立起颗粒–壁面碰撞三维数学模型，并采用此三维数学模型研究了壁面约束效应对细长颗粒流化特性的影响。
The three-dimensional particle-wall collision mathematical models were founded in the light of the kinetic of rigid and the momentum conservation law, and the effects of wall on the f.
刚体与刚体之间分别使用约束进行连接，以此模拟人体的关节联结。
To simulate the human body's articulation, restraints are used to carry on the connection between the rigid body and the rigid body.
该系统采用水平集方法，利用分段平滑运动场的约束条件，实现非刚体运动目标检测和背景的运动估算。
This system can realize the detection of the non-rigid moving object and the estimation of the background velocity through the Level-Set method and piece-wise smooth motion field constraint.
针对不同约束拓扑的多刚体系统进行数值实验，验证了本算法的正确性和效率。
The correctness and efficiency of the proposed method have been verified by numerical experiments on multibody systems with different kinds of constraint topologies.
一个无约束刚体有6个自由度：直线移动在三个坐标和旋转运动三个坐标轴。
An unconstrained rigid body has six degrees-of-freedom: translation in three coordinates and rotation about three coordinate axes.
一个无约束刚体有6个自由度：直线移动在三个坐标和旋转运动三个坐标轴。
An unconstrained rigid body has six degrees-of-freedom: translation in three coordinates and rotation about three coordinate axes.
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