查询词典 geometrical boundary condition

The gap element method is proposed in the paper for two kinds of problems, which include contact problem and gap joint problem. Elasticity contact problem falls into the category of unknown boundary value problems. It follows that the contact area and contact conditions or states can never be determined without special mathematical analysis, which is a very difficult work. The boundary conditions of the contact surfaces are deduced.

文中给出了间隙元法在空间可动部件接触问题中的应用，推导了其几何边界条件和力学边界条件，利用虚功原理推导了含间隙元弹性接触问题的有限元方程式，给出了其数值解法的迭代步骤，并指出了利用间隙单元进行分析的特点。

Results show that in contrast to no-slip boundary conditions, slip boundary conditions would allow the displacement of contact line along the wall and have a more precise prediction of interface distortion without neglecting the wall effects.

由模拟结果可看出，相对於不滑动边界，滑动边界设定使壁面接触线可在壁面上移动，能有效预测流体界面弯曲变化情形，且不会忽略壁面之影响。

The linear boundary element method make boundary element into linear segment from linear interpolating function.

线性边界元法是在常数边界元法的基础上，从线性插值函数出发将边界单元按线性分布来进行处理的一种数值方法。

Refer to the research findings of CHengDu Research Institute of Geosciences and Minerals(1990) and Nanjing Research Institute of Geography and Lake of Chinese Academy of Sciences(1989), according to the Guidebook of China Stratum(2000), the chronostratigraphy of Kunming Basin is divided into 4 age: the bottom of the Quaternary corresponding to M/G Boundary, age is 2.6Ma;the Bottom of the Mid-Pleistocene corresponding to B/M Boundary, age is 0.78Ma;the Bottom of the Upper-Pleistocene corresponding to the Blake event, age is 0.128Ma;the Bottom of the Holocene corresponding to the Gothenburg event,age is 0.012Ma.

本次研究获得了大量的测年数据，参考成都地质矿产研究所(1990)及中科院南京地理与湖泊研究所(1989)等的研究成果，按照中国地层指南(2000)的方案，厘定了昆明盆地第四纪年代地层划分：第四系底界对应古地磁松山反向期与高斯正向期界线处，年龄为2.6Ma；更新统中部底界对应古地磁布容正向期与松山反向期界线，年龄为0.78Ma；更新统上部底界对应古地磁布莱克事件附近，年龄约0.128Ma：全新统底界对应古地磁哥德堡事件附近，年龄约0.012ma。

Tz = 2Gk q 即 z = 2Gk q /T 40 Suppose the volume between membrane and the boundary plane is V, and we notice that 2 ∫∫ d x d y = M Then we have Thereby we have q qM V =∫∫ zdxdy =∫∫ dxdy = 2GTk 4GTk M 2 Gk = 2V q /T From τ zx =τ xz =, y z 2Gk τ zx /= y q / T τ z y =τ yz = x 41 Moreover, we get 设薄膜及其边界平面之间的体积为V,并注意到 2 ∫∫ d x d y = M 则有从而有由又可得 q qM V =∫∫ zdxdy =∫∫ dxdy = 2GTk 4GTk M 2 Gk = 2V q /T τ zx =τ xz =, y z 2Gk τ zx /= y q / T τ z y =τ yz = x 42 Adjust the pressure q of which the membrane is under, and make the rights of formulas,, equal to one, then we can gain some conclusions as follows:(1) The stress function of wringed pole equals to the uprightness angle of the membrane (2) The torsion M which wringed pole received equals to two times of the volume between the membrane and the boundary plane.

o b y a x 43 调整薄膜所受的压力q，使得，，三式等号的右边为1，则可得出如下结论：(1)扭杆的应力函数等于薄膜的垂度z。(2)扭杆所受的扭矩M等于该薄膜及其边界平面之间的体积的两倍。

Article 3 Processing trade in export processing zones means the production operation activities took by the enterprises in the export processing zones, including purchasing raw materials, spare parts, components, wrappages in and out of the boundary and transporting the finished products out of the boundary after processing and assembling.

第三条 出口加工区的加工贸易，是指出口加工区内企业从境外或从境内采购原材料、零部件、元器件、包装物料等，经加工、装配后将制成品复运出境的生产经营活动。

To overcome this drawback of the classical fixed/free boundary of finite computational models for structure-foundation systems, a transmitting boundary model has been proposed to account the dynamic interaction between structures and foundations for dynamic analyses of periodically spaced structure-foundation systems subject to upgoing seismic waves.

结构-地基有限模型中传统的固定边界错误地将地震能量全部陷入结构的计算模型，严重影响了结构地震反应的计算精度。

The result shows that the erosion presents as incision when the riverbed is relative narrow and deep; To the low-water branching reach with strong boundary conditions where the riverbed is wide and shallow, the scour and deposit variation characteristics mainly presents as erosion and deposition adjustment of river island, height deviation of thalweg in the inlets and the adjustment of split ratio after impoundment To the low-water branching reach where the riverbed is wide and shallow and the lateral boundary conditions are weak, the scour and deposit variation characteristics is not restricted to the adjustment of split ratio, and the pattern of the braided reach may even be changed.

结果表明：当河段相对窄深时，河段冲刷主要为下切；当河段为相对宽浅的低水分汊河段且河岸约束较强时，蓄水以后的冲淤变化主要体现为江心洲滩的冲淤调整、汊道深泓高程差的冲淤调整，并引起主支汊分流比的调整；当河段为较为宽浅的低水分汊河段且河岸约束相对较弱时，则冲刷调整不仅限于分流比的调整，甚至会导致大的分汊格局的调整。

In the Method of Fundamental Solutions, seeding location of the source points on a fictitious boundary off-setting from the real boundary is necessary.

在基本解法数值方法中，为避开奇异性将源点布在离开边界的虚拟边界上是必要的。

The technology of oil flow and silk thread can reflect effect of the vertex generators controlling the boundary layer separation of the wing truly.6 The single hot line doesnt fit for the measure of the three-dimensional boundary layer downstream of the vertex generators, according to the result of the flow visualization.

油流和丝线流动显示技术可真实反映涡流发生器对机翼附面层分离的控制效果。 6根据流动显示结果，指出单丝热线不适合用于涡流发生器下游具有较强_维流动的附面层测量。关键词：涡流发生器，超临界机翼，附面层分离，控制，风洞实验

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。