When the fluidic muscle fills with air, it increases in diameter and contracts in length, enabling a fluid, elastic movement. 如果流体肌肉中充满空气,它的直径扩大、长度减小,从而进行流动的弹性运动。
As second paper concerning application of computer in physics, two programs of demonstration for mechanical process are put forward: ( 1) elastic collision of two small ball: ( 2) movement of centre of mass of a rigid body. 作为计算机在物理教学中的应用系列论文之二,本文向读者介绍了两个力学过程的演示程序:(1)两小球的弹性碰撞;(2)刚体的质心运动。
Second, With compare to the numerical examples, the method which uses the multi-rigid-body discrete model to simulate the dynamic characteristic of a elastic body which is under the condition of movement is verified to be feasible. 然后,通过与具体实例的比较,可以看出:用多刚体离散模型来模拟运动状态单个臂式构件的动特性是可行的。
When deformation is elastic the initial configuration of atomic system changes little, obvious change is observed in plastic period, such as break of metal bond, movement of atoms and pores, migration of grain boundary. 在弹性变形阶段原子排列结构不变,而塑性变形阶段此排列结构发生较大变化,包括金属键断裂,原子与空位迁移、重组,晶界变形、迁移等。
The influence of elastic elementary displacement effect on the rule of main roof movement in stope 论弹性基础变形效应对采场老顶活动规律的影响
Actuators based on electromagnetism were designed. A new elastic rubber was used in the structure of support, which can avoid the movement coupling of two directions. 设计了基于电磁作动的二维作动器,并拟使用新型的弹性橡胶作为支承机构,从机械结构上消除了两个方向的运动耦合。
In order to study the dynamic character of the plate, the valve's movement was simplified to a elastic plate system according to movement and boundary condition of the plate, and it is solved by FEA. 为了研究阀片的动力特性,本文按照阀片的运动特征及其边界条件,将其简化为薄板振动力学系统,采用有限元法来求解。
In order to trace the tip angle trajectory precisely and suppress the elastic vibration in movement, a strain feedback PID controller was designed based on the theory of quadratic optimum control in frequency-domain. 设计了基于频域内二次最优控制理论的应变反馈PID控制器,实现对柔性机械臂末端运动轨迹的精确跟踪控制,同时抑制机械臂的弹性振动。
This paper reviews the mechanism and influence factor on the storage and utilization of the elastic energy in the stretch-shortening cycle movement. 综述了在牵拉-缩短环运动中,可将负功阶段的能量储存于肌肉的串联弹性成分中,在随后的向心收缩过程中获得再利用的机制及影响因素。
The model of finite element analysis for fairing of launch vehicle was established based on the factors of the structural elastic deformation and large-scale space relative movement as well as coupling of elastic and rigid movement in this paper. 在考虑结构弹性变形、空间大范围相对运动,以及弹性运动与刚体运动耦合的基础上,建立了运载火箭整流罩的有限元分析模型。采用MSC。
Negative Dislocation Model of Elastic Block Boundary of Horizontal Crustal Movement and the Prediction of Strong Earthquake Position in Sichuan-Yunnan Area 川滇地区地壳水平运动的弹性块体边界负位错模型与强震地点预测
The dynamical equations of blade are established in non-inertia reference frame by Lagrange equations and finite element methods. Coupling of rigid body movement and elastic movement is considered and the relative dynamic equations are established. 应用拉格朗日方程和有限元素法考虑了刚体运动和弹性运动的耦合关系在非惯性参考系下建立了叶片系统的相对动力学方程。
Superelastic Nickel Titanium Coils Versus Elastic Chains in Simultanous Distal Movement of Canine 镍钛螺旋弹簧与弹力橡皮链远中移动尖牙的比较研究
The accurate equation of elastic beam element with rigid movement 具有刚性运动的弹性梁单元动力学微分方程的精确表达式
To suppress the simultaneous elastic vibration in movement, an elastic stabilizer is designed by using the LQR control method. 通过最优控制理论设计弹性稳态器,抑制由于刚体运动而激发的弹性振动。
Thirdly, based on simulating the elastic objects movement, two heuristic algorithms are presented by using the idea of the simulated annealing algorithm. 第三,在模拟物理世界中弹性物体运动的基础上,借鉴模拟退火法的思想,得出了二个启发式方法。
Comparing to the Elastic Movement Theory, the formula is more suitable to the regulation. 并将接触力学弹性滑动公式与前苏联学者的弹性滑动理论公式进行了比较,认为接触力学弹性滑动公式更合乎回转窑轴向下滑运动规律。
Many current holding methods was based on elastic medium to transfer force and movement. 现有的压边方法多数采用弹性介质传递力和运动。
We use 2-D elastic finite element model to explore the crustal movement and deformation in the process of strain energy accumulating of the Qinghai-Tibet plateau, taking the GPS surveying results from 1999 to 2001 as the constraining conditions. 利用二维有限元模型,以GPS测量的构造运动为约束条件,探讨了青藏活动地块在弹性应变积累过程中的运动与变形状态。
Elastic wave is a carrier of energy spreading. It is proved approximately in theory that the elastic wave of the movement is the process of entropy increasement. 弹性波是能量传播的载体,从理论上可以近似证明弹性波的传播是熵增加的过程。
The research object is the various mechanical behaviors under the action of flow field, and the influence of elastic deformation and movement on flow field. 它的研究对象是弹性体在流场作用下的各种力学行为,以及弹性体变形或运动对流场的影响。
Because of the special mechanical characteristics of the resin ball, such as viscoelastic, low friction coefficient, low elastic modulus and so on, the movement of the balls are not ideally during the lapping process. 由于树脂球材料的粘弹性、低摩擦系数、低弹性模量等特性,导致其在研磨过程中成球运动不理想,易打滑、磨损,不利于球形偏差的改善,从而限制了其应用。