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Near the contact boundary there exists a kind of metamorphic rock known as hornfels. It is resulted from the contact metamorphism wh magma comes in contact with the sedimentary rocks and heats and squeezes them.

在二者 接触界线附近发育着一种叫角岩的变质岩，角岩的形成是由于岩浆人侵与周围沉积岩接触时所产生的热量和压力致使原岩发生变化而成。

Finally, the contact zone and contact stresses can be determined when a couple of contact loading and indenter's curvature are specified.

最后，利用所得直线族，在已知接触压力与压头半径的前提下确定接触区尺寸与接触应力。

Four-node degenerated shell element and rigid shell element are used in our FEM model.Updated Lagrange formulation and rate form constitutive equation are adopted to solve the problem of large strain and large rotation in sheet forming process.Sheet metal material property is described by plastic anisotropy yielding model and isotropic hardening model.Master surface-slave surface contact model is used to define the contact between tools and blank.Contact constraints are enforced with a kinematic algorithm and friction stress is computed by Coulomb friction law.Dynamic relaxation method is used to treat springback after forming stroke.

四结点蜕化壳单元和刚体壳单元分别用来建立板和模具的有限元模型；更新Lagrange法和速率型本构关系被用来处理板料变形中的大应变和大转动；材料模型采用塑性各向异性屈服与等向强化模型；通过主从面模型定义板料和模具的接触，接触算法采用运动约束法，摩擦力用库仓定律计算；并利用动力松弛法对回弹过程进行了计算。

In chapter six, A finite element model to evaluate the mechanics properties of thin wall structure is put forwards. The 4-node quadrilateral Hughes-Liu shell element with five through-the-thickness integration points is employed. The material is assumed to satisfy the elastic-plastic yield condition with isotropic hardening. The single surface contact algorithm is taken to deal with the contact searching. The priori stabilization procedures for the numerical control of the hourglass instability and the penalty method for the evaluation of contact force are used. The classical Coulomb law of friction is employed to evaluate the friction force.

第六章采用法向方向5点积分的4节点Hughes-Liu壳单元，前置参数法砂漏控制技术，等向强化弹塑性材料模型，分步增量应力回映方法，一体化接触搜寻算法，罚参数接触力计算方法及经典摩擦定律，建立了一种计算受冲薄壁结构大变形力学特性计算的有限元模型，通过对汽车A传动轴及汽车纵向方形吸能梁的大变形力学特性分析，验证了该有限元模型的正确性。

High temperature of contact and junction point causes an accident due to poor contact of knife switch s contact and connector of high voltage switch cabinet and impact of load.

高压开关柜刀闸触头、出线电缆接头往往因接触不良、负荷冲击等因素引起触点和接点温度过高，造成事故发生。

This paper researches the part third-order contact condition of tool and the surfaces by the contact principle of deferential geometry in to the 5-axis NC machining and analyzes the contact degree of the intersection line of the cutter and the surfaces.

运用微分几何中的切触原理，研究了在多轴数控机床中铣刀铣削圆与零件曲面的切触条件和局部坐标系下的局部三阶切触条件，并用截形对铣刀铣削圆与曲面的贴近程度进行了分析。

The apparatus includes a positive contact (50) positioned so as to engage the positive terminal (42) of the battery, a negative contact (52) positioned so as to engage the negative terminal (44) of the battery, a third contact (54) positioned so as to engage the third terminal (46) and a logic circuit (72) connected to the positive, negative and third terminals.

所述装置包括：一个设置用于与电池的正端（42）连接的正触点（50）；一个设置用于与电池的负端（44）连接的负触点（52）；一个设置用于与电池的第三端（46）连接的第三触点（54）；和一个与正触点、负触点和第三触点连接的逻辑电路（72）。

When it is used to solve contact problems,multiplepairs of contact points can be updated in each iteration,other thansome methods such as Thail-Van de Panne method and Goldfarb-Idnani method,which update only one pair of contact points at eachiteration.

用拟有效集方法解接触问题，每次迭代可以更换一组接触点对而不是某些方法只能更换一个接触点对，因此大大提高了解接触问题的效率。

Based on the equations, the contact spots on the face gear are simulated and analyses are conducted on the rule of the principal curvature of the contact points on the pinion and the face gear as well as the rule of the maximum press stress of the contact areas on the face gear.

根据布希涅斯克问题的求解方法，给出了传动中面齿轮上接触区域的椭圆长、短半径、中心最大变形量、最大压应力以及载荷分布的方程，分析了接触中心最大压应力的变化规律，实现了接触斑点的可视化仿真。

The analysis of the contact problem in FEM includes two aspects: the checking of contact points and the treatment of contact points with mechanics and kinematics.

有限元分析中的接触问题包括两方面：接触点的检测和已接触点的力学与运动学处理。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。