数值分析

Secondly, by the numerical simulation "experiments" and mechanics analyses, the effects of temperatures, forming velocities and the entering angles of mould on the products were studied. The main invaliding forms both of crinkling and crazing were simulated and analyzed, so that the technical parameters of forming, geometrical parameters of moulds were optimized.

其次，通过对TC1钛合金薄板整流内罩的深拉热成形的数值模拟&实验&和力学分析，探讨温度、成形速度和模具压边力等对成形产品的影响，模拟分析了&起皱&和&拉裂&等主要失效形式，对成形工艺参数、模具几何参数等进行了优化。

ABSTRACT In order to study the thermally activated characteristics of plastic deformation and the effect of alloying element on the thermal activation of structural steels, the properties of plastic deformation for 20g and 13Ni3CrMoV steels have been examined in the temperature of 77—473K and strain rate of 〓. The experimental phenomena show that the effective stress of plastic deformation decreases with the increase of alloying elements content (namely solute solution softening) and the frequency factor deceases with the increase of effective stress.

本文以13Ni3CrMoV钢焊接结构的动态断裂破坏为背景，通过系统测试20g和13Ni3CrMoV钢的动态屈服特性，分析比较了结构钢的形变热激活特点，从频率因子〓随有效应力σ〓增大而下降和合金固溶软化的实验现象出发，在位错以弯折方式克服晶格Peierls位垒的基础上，提出了溶质原子与螺型位错热激活弯折相互作用的物理模型和σ〓-T分段线性关系的形变热激活理论假设，并借助计算机数值模拟，分析探讨了合金固溶软化的微观机制。

By adopting strain intenerated model and using numerical calculation of FLAC(Fast Lagrangian Analysis of Continue), deformation and destruction course under pick cutting is researched, different parameters' great influence on plasticity district, max displacement, max main stress and max shearing stress under the various kinds of operating modes is analyzed.

采用应变软化的模型，使用连续介质快速拉格朗日分析法(FLAC，FastLagrangianAnaly-sisofContinue)进行数值模拟计算；研究截齿截割作用下煤体变形破坏过程；分析各种工况下不同参数对煤体塑性区、最大位移、最大主应力、最大剪应力的影响。

Taking the accurate analysis on the joggling region of a connecting rod bolt as an example, the accurate analysis of numerical simulation on complex structures is done combing with the functions and features of ANSYS submodel technology.

以连杆螺栓啮合区域的精细分析为例，结合ANSYS子模型技术的功能特点，进行复杂结构数值模拟的精细分析。

Taking the accurate analysis on the joggling region of a connecting rod bolt as an example, the accurate analysis of numerical simulation on complex structures is done combing with the functions and features of ANSYS submodel technology.

以连杆螺栓嘀合区域的精细分析为例，结合ANSYS 子模型技术的功能特点，进行复杂结构数值模拟的精细分析。

Based on the theory of two-phase fluids dynamics, the general governing equation is established, which is applied to the fields of seepage, consolidation and deposit. For the first time, the mechanics properties of the soil affected by seepage are studied by the means of experiment. The problems of the modified indexes of mechanics and constitutive relation are solved due to the formulations obtained of mechanics parameter under seepage condition. Applied fuzzy theory and modern project design method, the fuzzy probability model for stability analysis is stetted up; Considered variation of mechanics parameter and curtain effect, the deformation patterns of deep execution are systematically analyzed.

基于两相流理论，推导了适用于渗流、固结和沉积的统一形式的控制方程；试验研究了渗流作用下土的力学性质的变化规律，经综合分析得到力学指标的定量表达式，为工程设计和数值计算中力学参数的确定提供了参考；基于模糊理论和现代工程设计方法，建立了基坑失稳的模糊概率模型，为基坑稳定性预测提供了新的方法；对基坑变形规律作了系统分析，考虑了土性变化和帷幕防渗效果对支护结构变形的影响，得到了较满意的结果。

This paper focuses on the classification and control of the stability of the surrounding rocks of stopes and roadways on the background of Xiadian Gold Mine. The association method of actual measurement, theoretical analysis and numerical simulation is used to analyse and research the law.

本文以招金集团夏甸金矿为背景，围绕对夏甸金矿巷道及采场围岩稳定性进行分类与控制这一主题，根据夏甸金矿的实际工程地质和开采技术情况，采用现场实测、理论分析与数值模拟相结合的方法，有针对性地展开了分析研究。

A numerical calculation method for analyzing combustion wave structure of solid rocket propellants has been designed.

设计了一套分析燃烧波结构的数值计算方法，可以利用热偶数据有效地分析均质推进剂固相反应的细节，为了解固体推进剂机理提拱了一种重要的手段

According to the problem that grating scale hardly achieves high resolution when in high speed and the characteristic of high speed high precision system,this paper presents across dimension displacement measuring method based on dual grating scales dual measuring,the counting values of dual grating scales switch and merge.

在分析光栅线性位移测量原理、光栅尺的测量误差尤其是细分误差的基础上，本文重点研究双光栅尺切换与合成的原理，建立了基于双光栅尺高速高精度位移测量的设计准则，根据设计准则设计了切换基准拾取方法以及快速切换与合成方法，分析了双光栅计数值切换合成的误差。

3D numerical simulation of typical sidewall and crown block s is carried out for underground powerhouse of the Three Gorges Project.

运用FLAC3D软件对三峡地下电站主厂房的典型边墙和顶拱块体分别进行三维数值模拟分析，对比分析其模拟结果表明：(1)边墙块体在水平垂直厂房轴线和铅直方向上应力均表现出卸荷特征，特别是x方向。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。