查询词典 finite dimensional

The construction of three-dimensional finite element model of human maxillary complex.

上颌骨复合体三维有限元模型的建立。

Using numerical simulation technology and method of orthogonal experiment design and single factor rotating optimization, this thesis makes a study of "lost core injection ", thus achieve the optimization of the parameters of molding process, to offer basic reference when developing production technology and mould of the plastics intake manifold. Based on the study of the status in quo and development trend of weight reduction on automobile, the application of plastics to automobile and intake manifold, then under the guidance of theory model and numerical simulation technology in the process of high polymer material, this thesis launches flowing main research work: First of all, on the basis of the three-dimensional model of the part and finite element net model, several designs of gating and running system are numerically simulated and analyzed via MPA of Moldflow.

本文在对当今汽车轻量化、零部件塑料化以及的汽车进气歧管塑料化的发展现状和发展趋势进行了研究和简要介绍，然后在高分子材料成型过程中的理论模型和数值计算方法的指导下，展开主要的研究工作：首先，在零件三维模型和有限元网格模型的基础上，使用Moldflow 的MPA模块对塑料进气歧管的多个浇注系统设计方案进行数值模拟，通过分析各个方案的充填质量、熔接线位置及数量等指标，得到了综合质量较高的4 个进料口的浇口位置及半限制型浇口大小的浇注系统。

According to the series of finite element equations, the nonlinear static program and dynamic program of three dimensional beam element are worked out and proved to be feasible and credible through a great deal of calculation examples.

根据推导的一系列有限元方程，编制了三维梁单元非线性静力程序及三维梁单元非线性动力分析程序，并选取大量算例对三个程序进行验证，证明程序是可行的和可靠的。

In this paper, three-dimensional finite element models are set up for structures with different consolidated bases with ANSYS software.

桩筏基础是目前高层建筑普遍采用的一种基础形式，特别是对于重量较大的结构。

A three-dimensional finite element model was set up to validate the reliability of the theoretical method using the software of Abaqus.

为验证该解析法的合理性，采用非线性较强的有限元软件Abaqus建立了空间模型，模型考虑了剪力连接件和材料的非线性。

Second order incident boundary condition on fixed incident boundary is derived for numerical simulations, based on the cnoidal or sinusoidal motions of wave maker paddle, which shows that the prediction with second order incident boundary condition is more accurate than the prediction with first order incident boundary condition. 2 The analytical solution for higher-order Boussinesq equations is derived and its applicable range is discussed. 3 A 2-D fully non-linear numerical model using boundary element method is developed to obtain wave forces acting on rectangular obstacle. 4 The three-dimensional fully non-linear waves are studied in a numerical wave tank using finite element method.The studies on the coupled numerical model combined Boussinesq equations with Laplace equation are following.

非耦合非线性波浪计算模型：1 根据造波板做椭圆余弦运动或正弦运动速度，推导出数值模拟波浪水槽时固定入射边界上的二阶波浪入射边界条件，数值计算结果和实验结果的对比表明采用二阶入射边界条件对波面升高的预报比采用一阶入射边界条件对波面升高的预报更为精确；2 推导了波浪水槽造波板做正弦运动所产生波浪的高阶Boussinesq方程摄动展开解析解，讨论了该解析解的适用范围；3 对整个波浪水槽应用边界元方法数值模拟了波浪对物体的非线性作用；4 用有限元法求解三维Laplace方程模拟了三维完全非线性波浪水槽。

Using the first order shear deformation theory for plate and mechanical-electro coupled variational equation, the two dimensional dynamic finite element formulation containing the effect of pressure in the cavity was derived.

数值分析了在不同的结构和声腔共振频率下主动控制效果，结果表明通过合适地布置压电片，能够很好地控制腔体的声压与位移。

Dental implantation ; implant-supported fixed prostheses ; three-dimensional finite element ; biomechanics

牙种植；种植固定桥；三维有限元；生物力学

With the wide use of the three-dimensional finite element method, the calculation of wave load s on floating body in the waves is in need more and mor.

尤其是随着计算机技术的发展和结构分析方法的进步，为结构三维有限元分析和可靠性分析提供波浪载荷的要求越来越多。

This paper studies the classification of two-dimensional representations of free group and free semigroup with two generators over arbitrary field, especially over finite field.

本文研究具两个生成元的自由群和自由半群在任意域，特别是在有限域上的二维表示的分类问题。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。