查询词典 BEM

A set of analytical integral method of triangular element linear interpolation BEM has systematically been deduced and put forward.

提出并系统推导了一套三角形线性插值边界元的解析积分公式。

Sound transmission through submerged, fluid filled elastic thin shell excited by incident acoustic waves in the interior domain was calculated using the coupled FEM and BEM method.

利用耦合有限元与边界元方法计算了声波激励下浸没在无界流场中内部充满流体的弹性薄壳声透射。

Using the Mindlin theory, the four-node finite element shell modal of healthy and damaged structure is formed; Using Green Function theory, the fluid around the structure is considered to be inviscid, irrotational and incompressible, and then the effect of fluid to structure is translated to the added mass matrix compared with global mass matrix using BEM.

基于Mindlin理论，本文建立了描述健康和损伤的四结点有限元板壳单元模型；基于Green函数理论，将结构所处的流体环境考虑为无粘、无旋、不可压缩的理想流体，推导了三维问题拉普拉斯方程的基本解，并利用边界元方法将流体对结构的影响归结为对结构整体质量矩阵的影响；针对各向同性损伤单元，采取刚度各向整体弱化的方法分析；对于各向异性损伤单元，采用Kachanov理论，引入了x和y两个方向的弹性损伤折减系数。

Second,the preliminary informations include the conditions that the potentials in the corrosion system should satisfy and the BEM basic formulas of Laplace equation are also discussed.

其次，预备知识包括腐蚀系统所满足的控制方程及边界条件和Laplace方程的边界元基本公式的推导。

The object-oriented BEM program has good extensibility and reusability. It's convenient for the obtainment and input of data.

实例表明，程序具有良好的可扩充性和代码可重用性，且前处理方面的数据生成和输入变得很方便。2。

Based on the dynamic stress optic law and by making use of the stress values from strain measurements and BEM calculation, the history of birefringent fringe orders are calculated, and compared with the result of dynamic orthotropic photoelasticity.

把动态应变测量推算出的应力分量以及时域边界元计算出的应力分量分别代入正交异性动态应力－光性定律，得到随时间变化的双折射条纹级数历程，将其与正交异性动态光弹性实验的结果进行比较。

Finally,a formulation of frictional contact problem in BEM and parametriclinear complementary form is presented.

最后，本文还对用边界元法结合线性互补问题求解摩擦接触问题进行了探讨性的研究。

Using the characteristic of the regular curve boundary for a bending plate in engineering,the analytic integral formulae of assistant states in boundary element method with the linear element for a Kirchhoff circular plate are introduced and the systematic equation of BEM is established in this paper.

利用一般弯曲薄板边界为规则曲线的特点，对工程常用的圆形弯曲薄板，采用线性单元，导出K irchhoff圆板各辅助态的边界积分解析表达式，建立问题的边界元法系统方程，从而使薄板的边界元分析完全避免通常使用的高斯积分，明显提高计算精度。

The main idea is to retain the dimensionality advantages of the BEM, and localize the integration domain to a regular sub-domain, as in the MLBIE, such that no mesh is needed for integration.

利用修正变分原理，进一步将积分方程限制在一些相互独立的局部子域内，最后得到与各个边界节点相联系的边界局部积分方程。

In order to calculate the electric field intensities of spherical electrode s in 3-D electrostatic fields precisely,the spherical surface curve triangular BEM which is based on spherical coordinates transformation is put forward.

为了精确计算三维静电场中球形电极表面的电场强度，提出了基于球坐标变换的球面曲边三角形边界元法。

The network space is the typical form of abstract space when it comes to the digital stage.

网络空间是抽象空间数字化阶段的典型形式。

The Notarial System,as the system of judicial certification in our country,is both the constructor and the defender of social credit system,It has its special value and function in the social honesty.

公证制度作为我国司法证明制度，既是社会信用体系的建设者，同时也是社会信用的捍卫者，在诚信中有其特殊的价值和功能。