变形

The plastic deformation mechanism of the process is explained. The vector equations of the curved conical surface and the figure of the particle motion for the forming process of the bending tube are presented. The theoretical model of stress and strain fields of the forming process is deduced. The practical forming process of tubes of large diameter demonstrates the validity of the new type of design method of the ox-horned core bar and the computation formula of the length of the raw tube.

本文通过研究弯管成形瞬时应力、应变状态及演化过程，阐明了弯管成形过程受力变形特点及力学原理；提出了一种适合弯管变形分析的新单元及数值方法；建立了弯管成形过程应力、应变场&标准图象&；通过研究弯管成形过程金属流动规律及力学条件，阐明了本工艺塑性变形机理；建立了描述弯管成形过程的曲锥面向量方程及其质点运动学图象；推导了弯管成形过程应力、应变场理论模型；结合大口径弯管生产过程，验证了本文给出的新型牛角芯棒设计方法和管坯长度计算公式的正确性。

The shaping course of Fine blanking is very complex. Material forms a local plastic cutting area between punch and bottom die, and brings violent plastic flow under the effect of press stress. The grad of stress and strain is great, and it is an unstable transmutation process that came through an elastic distortion, plastic distortion and cut rupture.

精冲成形过程非常复杂，材料在狭窄的凸、凹模间隙附近形成了局部塑性剪切带，在压应力的作用下产生强烈的塑性流动，应力应变梯度很大，是一个经历弹性变形、塑性变形和剪切断裂的非稳态大变形过程。

Firstly the elastic stage of the cutting tool and workpiece in rectangular element is modeled and the relationship between the element node force and element node displacement also deduced.

首先选用矩形单元对刀具和工件弹性阶段进行有限元建模，得出其单元节点力和节点位移之间的关系，然后利用普朗特路斯方程，推导工件材料塑性变形时单元节点力和节点位移之间的关系，并指出金属由弹性变形到塑性变形时其单元刚度矩阵变化的规律，从而为实现金属切削过程的数值模拟提供可靠的理论基础。

But the deformation curve of large deformation satisfy more boundary conditions

变形模型沿用了王汝樑方法的远端弹性地基梁及近端悬臂梁模型，但大变形段的变形曲线满足了更多的边界条件

Finite-element analysis of quadrangular drill tower under wind load ;2. Curvature variation rule of cable and membrane structures subject to the wind load ;3. Then the wire strands and catway of Zhoushan Xihoumen bridge applied wind load in main cable construction are studied.

探讨了西堠门大桥主缆架设期间不同工况中索股在各级风载下的横向变形规律，结合猫道在不同级风载作用下的横向变形，通过索股和猫道相对横向变形量确定出猫道上可供主缆架设施工的风速。

By means of triaxial tests, uniaxial compressive tests of a prism and bending tests of a reinforced cement-soil beam, elastic and deformation modulus of cement soil are studied and the relationships between deformation modulus and compressive strength are obtained.

通过三轴试验、棱柱体单轴抗压试验及加筋水泥土梁的抗弯试验，研究了水泥土的弹性模量及变形模量，得到了变形模量与抗压强度之间的关系，并分析了试验方法对变形模量测试结果的影响。

The digital simulation of thedynamic processes under step load input and supply oil pressure fluctuation were carried on by MATLAB. Analysis of the dynamic characteristics was done with the changes of the supply pressure, load, structural parameters of spherical hydrostatic bearing and the effective bulk modulus of oil. The conclusions show that structural parameters of the spherical bearing and the effect bulk modulus of oil have significant influence to dynamic characteristics, but the elasticity deformation of interior supporting collet has very small influences on the output response characteristics of the suspension system. The collets deformation can be neglected on the project.

在此基础上，建立了考虑内支撑筒的弹性变形与否时悬浮系统的数学模型，同时，建立了线性化的仿真模型，利用MATLAB对阶跃负载输入和油源压力脉动输入下的系统进行动态过程的数值仿真，结果表明球面副的结构参数，油液的有效体积弹性模数对系统的响应特性有明显的影响，而内支撑筒的弹性变形对悬浮系统的响应特性的影响很小，在工程上可以忽略其弹性变形。

The union building distortion monitor's goal, the significance and the content, study the building CORS technology distortion monitor project design, involves the technology to the distortion monitor plan to rest on, aspects and so on stand design, control center, data transmission, data processing, has made the exhaustive elaboration.

结合建筑物变形监测的目的、意义及内容，研究建筑物CORS技术变形监测方案设计，对变形监测方案涉及的技术依据、站点设计、控制中心、数据传输、数据处理等方面，做了详尽的论述。

Along with the main muscle/skin deformation tools, Maya Muscle provides several standalone deformers that can be used for any number of deformation effects.

连同主要的肌肉与皮肤变形工具，maya肌肉模块提供几个独立的变形器用于各种变形效果。

The fault rock is characterized as a low temperature deformation of about 200℃±and it is mainly a type of cataclasite.

断层岩的变形特征为低温变形，断层岩主要为碎裂岩类，变形温度在200℃左右。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。