查询词典 finite dimensional

Based on the involutes gear generating method and UG、ANSYS three-dimensional modeling capabilities, models of accurate calculation of the finite element tooth root bending stress are established with 24 groups of data.

依据渐开线齿轮范成加工原理及UG、ANSYS三维建模功能，建立的有限元齿根弯曲应力精确计算模型，并进行了24组数据计算。

The finite difference method is used to calculate the multi-dimensional diffusion of hydrogen isotopes in materials.

摘 要：研究了氢同位素在材料中多维扩散行为的有限差分计算方法。

The finite difference method is used to calculate the multi dimensional diffusion of hydrogen isotopes in materials.

研究了氢同位素在材料中多维扩散行为的有限差分计算方法。

Base on the results of the stress measurement combining the engineering geological condition and the finite element tri-dimensional simulating to elementary study the stability problems of the horizontal and the vertical jambs.

在本文建立的地应力场的基础上，结合工程地质条件，利用有限元三维模拟分析，对水平矿柱与垂直矿柱的稳定性问题进行了初步研究。

The main contents and results of this paper are listed as follows:Based on the finite element analysis software ANSYS establish a bridge of three-dimensional mechanical model of CWR;Based on an actual project,calculate different conditions of three forms of bridge and research the reasonable removal scope of fastener;Research on the allowed lock temperature rail track construction of partial maintenance of range.By analyzing the result obtain the best way to replace the support of a bridge and the range of removal of the bearing and permission of rail temperature of construction.It supports some recommendations for the replacement of city construction maintenance.

本文主要研究内容为：基于有限元分析软件ANSYS建立了桥上无缝线路三维力学模型；依据某实际工程，分析计算了三种桥梁形式在不同顶升工况下的钢轨和扣件受力，研究了扣件的合理拆除范围；对维修后局部钢轨施工锁定轨温的允许范围进行了研究；分析得出了城轨桥梁更换支座施工的最佳顶升方式、扣件拆除范围和允许施工轨温，为城轨桥梁更换支座的施工维修提出了一些建议。

A three-dimensional finite element model for precision cutting 3J33 maraging steel using the commercial software Marc is presented to study the effect of tool nose radius on chip formation, the principal cutting forces and the temperature fields.

在商业化软件Marc的基础上建立了圆弧刃精密切削三维有限元模型，研究不同半径的圆弧刃精密切削条件下主切削力、切屑形状和切削温度场分布。

Firstly, the basic principle of Finite-Difference Time-Domain is introduced and the 2-dimensional FDTD equation is derived from the Maxwells equations, calculated by setting up the appropriate excitation source, cell size, the interval of space and time.

首先，介绍了时域有限差分法的基本原理，从麦克斯韦方程出发，建立二维空间中的时域有限差分方程，通过设置合适的激励源、网格尺寸、空间和时间步长进行计算。

The three-dimensional explicit dynamic analysis of mild steel orthogonal cutting process is done using the non-linear finite element code LS-DYNA.

利用非线性有限元程序LS-DYNA，对低碳钢直角自由切削过程进行三维显式动力分析。

In the present study, the effect of centrifugal force was investigated by three dimensional finite element analyses; the vibration characters of random mistuned blade-disc were also being investigated by probability methods and the Young's modulus of material of all blades are regarded as random parameters.

结果表明，离心力对失调叶片轮盘系统局部化振动有减弱作用；所有叶片弹性模量在5%误差范围的随机失调系统，其固有频率与非失调相差很小，即失调叶片—轮盘系统可以按照循环对称结构进行模态分析。

First, we introduce the linearly distributed stress tensors as the source and by means of two-dimensional finite-difference scheme to obtain the response of this source, then the point source response is generated by correcting both the wave forms and geometrical spreadings for the linear respons.

但在理论地震学，工程地震学和勘探地震学中横向不均匀介质中的波传播问题非常重要，此时使用有限差分法和有限元法等离散数值方法比较有效。鉴于目前计算工具的限制，三维模型的有限差分计算虽然在理论上是可行的，但很少能用于实际。

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。