Periodically variables of gear mesh stiffness, may cause period excitation, may result in vibration by gearing parameter. 齿轮啮合刚度是周期性变化的,这会引起系统的周期性激励,这样的振动称为参激振动。
By selecting different parameters at different subdivision levels, in different meshes and even in the same mesh, variable parameter Hermite Subdivision Surfaces can exactly represent sphere. 通过在不同细分层次,不同面片甚至同一面片中选用不同的细分参数,变参数Hermite细分曲面可以精确地表示球面。
First, according to analyzing the mesh principle and the enveloping principle, the paper does a study about the principle of rack processing and proposes a parameter equation of rack tooth profile. 通过对齿轮齿条的啮合原理和包络原理的分析,对齿条的加工原理进行了研究,求出了包络渐开线齿廓的齿条齿廓的参数方程。
The article analyzes some of the factors, such as mesh parameter, stencil thickness, ink viscosity and printing operation. 分析了丝网参数、模版厚度、油墨粘度及印刷作业参数对墨层厚度的影响。
The method of a two-and-three-dimension finite element antomatic mesh generation based on isoparametric mapping concepts and parameter division is discussed, and the algorithm of processing multi-connected domain raised. 讨论应用等参数映射法和参数分割自动生成二、三维有限元网格的方法,并提出两种处理多连通域的算法。
Mesh Theory and Choice of Parameter for Grinding ( Honing) a Gear With CBN Involute Enveloping Toroidal Worm Grind Wheel CBN渐开面包络环面蜗杆砂轮磨(珩)齿的啮合理论及参数选择
This paper describes a careful study of the two composite material winding method s: the parameter winding method ( PWM) and the mesh winding method ( MWM). Experiments were also carried out on vanes with these two methods. 详细研究了2种复合材料缠绕加工方法:参数化缠绕法(parameterwindingmethod,PWM)和网格缠绕法(meshwindingmethod,MWM),并分别用2种方法对叶片进行了缠绕成型实验。
The suitable point in the set or a suitable node existing in current mesh is selected to construct new element with that element edge. The mesh topological compatibility of the new element is checked with the corresponding mesh in the parameter field of the surface. 从待选点集或曲面上已有的网格节点选择合适的点参与新单元的构造,并利用曲面参数域检查新单元的网格拓扑相容性。
Some formulae about micro gear mesh model and micro gear parameter computation in micro re-duction were propounded. 提出了微3K-2型行星齿轮减速器设计中,模数小于0.08的微齿轮传动啮合模型和参数计算公式。
Based on the dynamical model of nonlinear system of a gear pair with backlash and time-varying mesh stiffness, the bifurcation structure of periodic motion and chaotic motion in parameter plane is studied. 基于含有间隙和时变啮合刚度的非线性单级齿轮系统动力学模型,对参数平面内周期运动和混沌运动的分岔结构进行了研究。
The Mesh Principle of the Toroidal Double Envelope Worm Gear Pair and its Parameter Selection 园环面型二次包络环面蜗杆副的啮合理论研究和参数选择
The paper defines materials of all cured high resistance ant-corona and structure of stator winding for large type high voltage generator ( 6.3~ 27kV), by the studying for selecting of domestic ant-corona of different mesh number sic and the studying of non-linearity parameter. 通过对国产防晕材料不同粒度碳化硅(SiC)的选择及非线性参数的研究,确定了适用于大型高压发电机(6.3~27kV)定子线棒的高阻防晕材料。
The main contents are as follows: A vertex curvature estimation method for triangle mesh is researched and the accuracy of curvature estimation is verified by parameter surfaces. 研究了三角网格模型上顶点曲率的估算方法,并用参数曲面的网格模型验证了曲率估算的精度。
Boundary division and control strategy dispersed the boundaries of parameter region. Mesh was generated on parameter region by advancing front technique and on 3-D surfaces by inverse mapping. With the help of the multiple mapping and mesh control strategy, high-quality mesh can be generated efficiently. 利用边界分割控制策略离散参数域边界,利用推进波前法对参数域进行剖分,然后利用逆映射生成曲面网格,以得到高品质的有限元网格。
A concept, suppression parameter, was introduced to indicate the effects of suppressing explosion pressure and flame speed for a multilayer mesh. The suppression parameter can be explained as the energy of the premixed flame before entering the multilayer wire mesh, and which will be quenched. 引入熄爆参数来反映丝网结构抑制火焰和爆炸压力的效果,熄爆参数可解释为被淬熄的预混火焰进入丝网结构前的能量。
The spatial mesh model built through point cloud is treated as the studied object, and a parallel algorithm of simplification under the control of the parameter is studied. 以针对空间点云进行建模而形成的空间格网为研究对象,研究了在参数控制下的并行简化算法。
As far as geometric aberration is concerned, mesh template image obtained with polynomial fitting is used for geometric aberration parameter determination of system and then the parameters are used in geometric adjustment and gray interpolation for image reconstruction. 2. 对于图像的几何失真畸变,利用多项式拟合的网格模板图像,得到系统的几何畸变参数,然后利用该参数对图像进行几何校正和灰度插值,得到复原的图像。
It discourses the mesh mechanism of gear and determines the geometry parameter of involute arc cylindrical gear. 本文介绍了齿轮的发展历史以及研究现状,对齿轮啮合机理做了论述,确定了其几何参数。
The ideal triangle mesh parameterization technology is that the mesh of the parameter domain should be topologically equivalent to the original 3D mesh and without any distortion ( including the area, angle and length distortion). 网格参数化的理想目标是参数域中的网格和原始网格在拓扑上同构并且不存在任何变形。
The dynamic mesh method based on spring simulation is enhanced with scale parameter to adapt for large deformation of structures. 对基于弹簧模拟的动网格方法加以改进,通过尺度因子的加入使动网格方法更好地适应结构大变形问题。
The meshing that using tetrahedral mesh can balance the speed, get the mesh quality that expected to assure the strength of quality, and user can control parameter and achieve feasible algorithms. 利用四面体进行网格划分均衡了网格划分的速度,可得到预期中的网格质量,可保证质量的强度,用户可进行参数控制以及算法实现的可行性。
By calculating the comprehensive analysis, discuss of the numerical wind tunnel for wind profile, turbulence model, the mesh method, mesh number of computational domain size parameter and the convergence criteria to judge the development and determine reasonable parameters. 全面、深入的探讨了数值风洞的风剖面、湍流模型、计算网格划分方式、网格数量、计算域大小等参数的选择及判断收敛标准的制定,确定出合理的参数。
By specifying affine transformations for the rest points in the reduced mesh, the matrix parameter elements are computed by Gauss-Newton iteration and then the coordinates of all the vertexes in the original shape are calculated and updated. 通过对简化网格中顶点指定仿射变换矩阵,采用高斯牛顿法迭代求解出仿射变换各参数值,更新原始模型中所有顶点的坐标,渲染得到变形后的三维形状。