Using the symmetry of set element and generating function, we obtain counting formulas for the finite bound combination,-multiple bound combination and circle bound combination. 文章研究了一些限距组合,利用集合元素的对称性,构造生成函数等计数技巧,提出了有限距组合,倍限距组合及环状限距组合的一系列计数公式。
Application of imaginary boundaries and structural symmetry in finite element natural property analysis for vibrating screen 振动筛有限元固有特性分析中虚约束的选择及结构对称性的应用
As a part of systematic studies of sheet metal non-rotation and symmetry drawing, it has been conducted relevant experiments and finite element analysis on the blank holder force's effects on the forming property and forming limit in the rectangular case drawing. 作为薄板非回转对称拉深成形系统研究的一部分,针对矩形盒拉深中压料力对成形性和成形极限的影响进行相应的实验和有限元模拟分析。
A rotational symmetry finite element model of gas turbine rotor in characteristics analysis 燃气轮机转子动力特性分析的旋转对称有限元模型
Field Point Reflection Approach for Utilizing Symmetry Conditons in Boundary Element Methods Method Actual geometry of the bone was represented as a standard pretreated model of bone, which was auto located by employing an affine scaling transformation. 边界元法中对称面条件处理的场点映射法方法针对小腿残端的特点,用标准骨替代真实骨,使用校准点映射法进行骨定位和配准,采用子域分解法自动形成网格。
In the numerical analysis of axially symmetry electromagnetic field, the finite element method using ring unit with rectangular cross-section has more advantages than other methods. 在具有轴对称特性电磁场的数值分析中,用矩形截面环单元分析具有比其他单元更多的优点。
Based on theories of computational fluid dynamics and heat transfer, an axial symmetry finite element model of velocity and temperature field of spot welding for aluminum alloy is established. 根据计算流体力学与传热学原理,建立了描述铝合金电阻点焊液态熔核流动行为和传热过程的轴对称有限元模型。
For the rotary symmetry and unlimited invasion shale fractured formation, when the electrode was lifted from bottom of borehole to the earth surface, based on the mesh generation of right angle triangle element, according to elementary resistivity weighted average formula. 本文研究的是具有旋转对称无限侵入的泥岩裂缝地层,当电极系自下而上移动时,在直角三角形单元网格剖分的基础上,依据单元电阻率加权公式,可求得裂缝存在时的电导阵。
Analytical analysis is based on mechanics of elasticity. When we use ANSYS software to do finite element analysis, axis symmetry element PLANE 183 and three-dimensional twenty-node solid element SOLID 186 are used separately. 解析分析以弹性力学为依据,有限元分析采用ANSYS软件,在利用ANSYS软件进行有限元分析时,分别采用了实体单元中的轴对称单元PLANE183和三维二十节点的六面体结构实体单元SOLIJD186。
Use of rotationally periodic symmetry in virtual boundary element 虚边界元法中的旋转周期对称结构
Rotation-reflection axis Sn, an abstract symmetry element in molecular structure, is described and the relation between rotation-reflection axis and optical activity of organic compounds is revealed in the paper. 本文描述了分子结构中较为抽象的对称元素&象转轴Sn并揭示了象转轴与有机物旋光性的关系。
Numerical Analysis and Applied Software of Non-Rotational Symmetry 3D Electrostatic Systems Using Boundary Element Method 三维非对称静电系统边界元素法的数值分析及应用软件
In the analysis of the temperature and stress field, the axis-symmetry finite element method is employed. 温度场及应力场的计算采用轴对称有限元法。
The application of coordinate transformation and principle of symmetry to element stiffness matrices has also been discussed. 文中还讨论了单元刚度矩阵的坐标变换和对称性应用。
A Settlement of Problem of Symmetry in Finite Element Analysis 对称问题的有限元分析与处理方法
But when symmetry complex image method is applied in the calculation of grounding grids resistance, it is to first calculate the total fault current of the grid and then obtain the fault current of every element and achieve the grid resistance. 但是在应用对称复镜象法计算接地网接地电阻时,需要假定总的泄漏电流,由此得出每个单元的泄漏电流和地网电位升,进而得到地网接地电阻。
Cylindrical Symmetry Microwave Cavity Calculation by the Finite Element Method 用有限元法计算圆柱对称微波谐振腔
Application of Symmetry of the Structure in Finite Element Modal Analysis of the Piston 结构对称性在活塞有限元模态分析中的应用
The studying of problem of symmetry have been done one by one in finite element analysis on structure, and point out corresponding simplifying method. 研究了对结构进行有限元分析时的各种对称问题,并指出了相应的简化方法。
This paper respectively simulated and computed magnetic line, magnetic induction value, magnetic flux, inductance and impurity loss of detecting magnetic cores of a big magnetic pole, unilateral array magnetic poles and symmetry array magnetic poles by finite element analysis soft ANSYS. 并应用ANSYS有限元分析软件分别仿真、计算了单个大磁极、单侧阵列式磁极和对称阵列式磁极探测磁芯的磁力线、磁感应强度值、磁通量、电感以及杂质的损耗。
Based on Poisson effect and geometry symmetry, a F-P cavity with new placement is designed using finite element method. Through extensive simulations the optimal supports were obtained. 根据泊松效应及腔几何对称性,利用有限元方法设计了一种新放置方式的F-P腔,通过数值模拟获得了这种F-P腔最佳的支撑位置。
According to its symmetry, a finite element model of a quarter arterial wall was built and applied pre-tension and blood pressure to simulate the real dynamic environment. 根据其对称性,建立了动脉壁的14有限元模型,并对模型施加了预拉伸和血压,以模拟真实的血管壁力学环境。