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The variable geometry truss mechanisms have been studied extensively and systematically by this project. The research plan has been completed all sidedly, and expected results have been obtained. Three new kinds of combination decahedrons and a new class of variable geometry truss mechanism, which is composed of an octahedron and three tetrahedrons connected in parallel form, are proposed. The position analyses for decahedrons, dodecahedrons, triple-octahedrons, combinations decahedron and a new type of structure of variable geometry truss mechanisms are presented by introducing additional extra linear displacement sensors and using resultant elimination and homotopy continuation algorithms. The method of kinematical analysis of variable geometry truss mechanisms is established.

课题组对变几何桁架机构进行了深入的研究，全面地完成了研究计划，取得了预期的成果；提出了三种新的十面体组合机构以及由一个八面体和三个四面体组成的新型变几何桁架机构的结构形式；应用结式消元、附加传感器和同伦方法等提出了十面体、十二面体、三重八面体、组合十面体和新型变几何桁架机构的位置分析方法；建立了变几何桁架机构运动分析的一般方法；建立了简洁的凯恩和拉格伦日动力学的模型；应用有限元和子结构方法，提出了变几何柞架机构弹性动力学模型，导出了逆动力学方程的显式形式；设计和研制了一台可折叠的八面体变几何杵架机构装置等。

The vehicle loads are considered as rectangular harmonic moving loads,and the analytical solution of the pavement and layered ground interaction is deduced with Lame decomposition theorem of displacement field and Fourier transform method.

首先，考虑车辆荷载的多轮性质，利用三角级数、Fourier变换及叠加原理等方法推导获得了粘弹性地基上连续配筋混凝土路面在多轮荷载作用下的稳态响应解；另外考虑基底剪切阻尼作用，详细分析了荷载参数、路面参数和地基参数对路面动力响应的影响。

The influence of residual displacement was the major question because of its disadvantages for decouple.

隔震结构的震后残余位移对其长期使用和减震能力有较大的影响，是隔震技术研究领域的重点问题。

In this paper,according to the second kind of reciprocal theorem s of finite displacement,a cylindrical bend plate with large deflection is calculated.

本文应用付宝连的大挠度弯曲直梁的功的互等定理，求解一个柱面弯曲板条的挠曲面方程。

The conclusions provides practical significance for engineering practice.The side displacement of the glass plate center is larger or less than the glass plate thickness,for the 3D geometric size of the glass plate and the lateral load vary in a wide range. In other words,the mechanic analysis of glass plate belongs to large deflection or small deflection theory in thin plate theory.

由于幕墙玻璃的三向几何尺寸和横向荷载集度可在较大的范围内变动，玻璃板中心的侧向位移，有可能小于或大于玻璃板的厚度，也就是说，幕墙玻璃的力学分析，既可能属于薄板理论中的小挠度问题，也可能属于大挠度问题。

Firstly, the relationship of Atomic force and distance is studied. The scan type of samples and the working mode of probe is confirmed, then PZT is chosen as actuator for micro scan displacement, and optical deflexion method is used to detect the deflexion value of cantilever. After all these work, the system light path design is finished, and its mathematical model is completed.

首先，分析了原子力探针系统的中原子力–距离的关系，并确定探针系统的探针的工作模式和样品的扫描模式，从而选择压电陶瓷作为扫描微位移驱动器；采用光学偏转法检测微悬臂偏转量，并选用了PSD作为传感元件，并在此基础上进行了系统光路设计及其数学模型的建立。

Objective: To study the displacement and intra-stress distribution of degenerate lumbar disc during rotation manipulation by using 3D finite element system,so as to explore the mechanism of action,safety and rationality of manipulation.

目的：用三维有限元法，分析施行坐位腰椎旋转手法时退变腰椎单元的内在应力及位移分布的特点，以探讨手法的作用机制、安全性及其合理性。

The seismic performance such as failure pattern,fai lure mechanism,hyst eresis loop curves,restoring-force model,displacement-restoring capacity,displac ement ductility,rigidity degradation and energy dissipation of two pieces of HPC frame with double-story and double-span are studied systematically by testing o f low reversed cyclic loading.

通过低周反复荷载试验对两榀双层双跨高性能混凝土框架的破坏形态、破坏机制、滞回曲线、骨架曲线、恢复力模型、变形恢复能力、位移延性、刚度退化、耗能能力等性能进行了较为深入系统的研究。

And, the DEM displacement and FEM stress analysis are two common methods of computer simulation.

在边坡变形破坏的计算机模拟已有的方法中，应用比较普遍的是有限元应力分析和离散元位移分析。

The principle and way of dectecing ultrasonic displacement of solid surfaces with laser heterodyne and phase-lockedloop to demodulate are described.

论述了应用激光外差和锁相环解调原理探测固体表面超声位移的原理、方法，并利用激光外差干涉仪对固体表面的超声位移进行了探测，得到了很好的结果。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。