数值技术

By measuring pressure induced by dynamiting which located various positions of the circular shell, the localizational effect of impact force on the circular shell is disclosed. Also, PVDF piezofilms are used to determine accurate time while projectile contacting target, accurate time while two interfaces of the target contacting at a initial distance of 5, and the contacting pressure between the two interfaces when the projectile is in 500m/s to lOOOm/s.

通过对化爆模拟加载试验中柱壳不同角度压力的监测，揭示了化爆模拟产生的压力局域化效应，为进一步模拟设计提出研究的方向；采用PVDF压电薄膜来监测弹靶碰撞的时刻、细小间隙的闭合时间以及由此产生的压力变化，通过对PVDF压力计测试结果分析以及和数值模拟结果的比较，获得规律性的认识，为进一步的应用提供了技术支持。

Numerical simulation of drawing process of the part has been done by using the FEM. Ultimately the reasonable die surface fo the process has been gaied which is applied in manufacture of the die through the adjustment and amendment of the drawing surfact based the simulation result, hence a guidance to the design of th elative parts.

并运用有限元技术对其成形过程进行数值模拟，根据模拟结果对拉延型面进行调整、修改，最终得到合理的模具型面用于模具的加工制造，并对同类零件的设计起到一定的指导作用。

Most parameters for the mixture antioxidation oil were studied and they were consistent with GB 2536-90, including transparence, smell, density, solidifying point, flash point, viscosity, acids and water-solubility acids;The viscosity of the antioxidation oil at 20℃～90℃was as same as mineral;And the relative permittivity at 30～106Hz was invariable and it was higher than mineral oil so that the electric field of the antioxidation oil paper insulation was more equilibrious.

研究得到了所研制的抗老化变压器油的参数值：透明度、气味、密度、凝点、闪点、运动粘度、酸值及水溶性酸或碱等，均满足变压器油技术标准GB 2536-90的要求；20℃～90℃之间该油运动粘度和矿物油几乎相等；在30～106Hz频率范围内，该油相对介电常数基本维持恒定，且比矿物油相对介电常数略大；其工频击穿电压远高于矿物油。

With basis of lots previous research, and considerations of high pressure jet grouting mechanism, influence factors and solid mechanics, with research methods like theoretical analysis, num erical simulation, field experiments and so on, here in this paper gives further study about working mechanism and influencing factors of horizontal grouting.

论文在大量前人研究成果的基础上，从高压喷射注浆加固机理、影响因素、固结体基本物理力学性质入手，运用理论分析、数值模拟和现场试验等多种研究方法，对水平旋喷技术的作用机理与影响因素进行了较为深入的研究。

In this paper, the numerical simulation of low oxygen high temperature air flameless combustion technology is conducted.

介绍了高风温无焰燃烧技术原理，并对其进行了数值计算。

For an example of craft design about stamping forming of the gate of a certain railway freight car, formulize the craft calculation of fluctuate formation on a weathering steel plate of moderate thickness, and the method and course of simulating analysis about forming process using computer numerical simulation technology.

以某型铁路货车车门冲压成形工艺设计为例，阐述了耐候钢中厚板起伏成形的工艺计算以及利用计算机数值模拟技术进行成形过程的仿真分析的方法及过程。

In addition, this paper studied using the stochastic fractural theory to simulte the form of fracture, and thought that it is correct to describe fracture by the fractural characteristics of fracture grid.

详细讨论了建立在渗流力学理论基础上的两种网格粗化技术，实现了油藏地质模型与油藏数值模拟的接轨。

In upper soil permeability deformation of dam base Geology condition, trait of soil permeability and filtration are studied overall system, firstly through engineering geology method, hydrotechnic design and numerical model technique are introduced to studying and the methods break localization of geology study in Dongpinghu reservoir dam.

本文是首次以地质工程研究的角度，对东平湖水库围坝的地质环境背景，土的渗透特性和渗流特征进行较为全面系统的研究。研究过程中借鉴和引入了水工设计的思想和数值模拟技术，突破了地质工作在东平湖水库围坝研究中仅仅是工程地质条件勘察的局限性。

M and RCC concrete below the elevation and with an upstream conventional concrete slab structure for impermeabilization,the authors develop an inhomogeneous multi laminate media element model for seepage analysis of RCC dams based on the research of the numerical procedure of nodal virtual flux and the technique of draining substructure for drainage holes.

基于长江三峡大坝碾压混凝土方案左厂房 12号坝段上部为常态混凝土、下部为上下游面均设有常态混凝土的防渗结构型式的碾压混凝土坝的特点，借助于渗流场求解的结点虚流量法及排水子结构技术，并提出&排水孔开关器&的概念和渗流非均质成层材料单元模型，对坝中设计时存在的主要渗流疑虑问题、大坝的防渗与排水设施渗控方案的特性进行了数值分析研究。

Progress in the research on powder electrostatics is discussed, with particular mention of different sorts of powder discharge and their incendivity, field modeling and numerical simulation experimental tests of charge transfer and equivalent energy during discharges and powder hazard prevention.

就粉体放电形态与点燃性，电场模型化与电场分布数值计算，放电电荷转移量与等价能量的实验规律，粉体静电防灾技术等几个方面，论述了粉体静电学国内外研究动态与进展

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。