柔体

" My mother taught me about contortion:"Will you look at the dirt on the back of your neck!

" 我母亲教我什么是柔体杂技："你能不能看看你脖子后面的泥！

He said he was a contortionist (somebody with bones like rubber, who can bend every which way).

据说他是个柔体杂技演员(就是骨头像橡胶一般柔软的人，身体能朝各个方向弯曲)。

The dynamic model of flexible multibody system is derived by first kind of Lagrange equation and also the constraint equations for velocity are obtained, the final expression of the dynamic equation is hybrid one of algebra and differential.

首先利用第一类Lagrange方程建立了多柔体系统的动力学模型，并建立了速度意义下的约束方程，方程的最终表现形式为微分／代数混合方程组。

Based on the flexible multibody dynamics model, that establish, a group of the algebra—differential hybrid equations which is made up of kinematics differential equation and spatial constraint algebra equations is listed by leading into the Lagrange multiplier to release the constraint of the system.

根据上述建立的多柔体动力学模型，通过引入Lagrange乘子释放系统的约束，列出了由系统的运动微分方程和空间约束代数方程组成的一组微分—代数混合方程组。

In the term of mathematics,because equality constraintcondition can be considered as a special case of inequality constraint condition,Lagrange multipliers domain decomposition method is a special case of Lagrangemultiplier method of flexible multi-body system dynamics.

前者满足等式约束，后者满足不等式约束；从数学的角度上看，由于等式约束可以看作不等式约束的特例，因而Lagrange乘子区域分解法可以看作是多柔体系统动力学的Lagrange乘子法特例。

In the following,we discuss the Lagrange multiplier method of flexible multi-body system dynamics and its application.

接下来详细讨论了多柔体系统动力学的Lagrange乘子法及其应用。多体系统动力学特别是多柔体系统动力学，是一个刚刚兴起的动力学研究的新方向。

In this paper, based on the flexible multibody dynamics model of the virtual axis hybrid polishing machine tool, the differential — algebra hybrid equations is calculated by the Newton- Raphson method. The variety of the moving displacement, the velocity and the acceleration for the moving platform, leg, slider on the 3- PTT parallel mechanism and the pose curve of the series mechanism are obtained.

论文主要完成了在已经建立的虚拟轴混联研抛机床多柔体动力学模型基础上，应用牛顿—拉斐逊（Newton-Raphson）数值计算方法求解微分—代数混合方程组，得到3-PTT并联机构动平台、支杆、滑鞍各部件的运动轨迹、速度和加速度变化规律，以及串联机构的姿态变化曲线。

Secondly, the theory for multi-flexible dynamical systems is introduced and applied, and the simplified system obtained is cubic nonlinear, with 1:3 internal resonance for certain parameter condition.

其次，简要介绍了柔性多体动力学理论，将柔性多体动力学理论应用于一类刚柔耦合系统的建模。该多柔体系统离散化后的简化模型为一个含有1：3内共振关系的立方非线性系统。

Taking the multi-deformable-body dynamics theory as a foundation,the dynamics behaviors of ring gear of the planetary gear set were studied in the process of engagement.

以多柔体动力学理论为基础，研究了行星齿轮内齿圈在啮合过程中的动力学行为。

Based on the theories of multi-body systems, this paper presented the subsystem method for dynamics of a rigid-flexible coupling system and a method for a flexible cantilever beam attached to a moving central rigid-body undergoing an arbitrarily three-dimensional large overall motion .

本文根据多柔体系统动力学理论，创新地提出了子系统的刚柔耦合动力学建模方法和考虑动力刚化效应的中心刚体作任意三维运动梁作三维振动的动力学建模方法。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。