查询词典 numerical analysis

In view of the questions in theoretic analysis and numerical simulation with the finite element method,the separation criterion of chips, the surface contact, the setting of friction coefficient,and the thermal stress coupling are researched. A simulation example is presented by applying the finite element analysis software-ANSYS,and the change of stress and strain in metal cutting process, the forming of shear plane and the influence of the temperature field on metal cutting are analyzed. The tool's strength is also analyzed.

基于理论分析和实际有限元数值模拟计算中遇到的问题，研究、讨论了切屑分离标准、表面接触、摩擦系数的设定、切屑与工件之间的连接以及热应力耦合分析等各项技术，并应用大型有限元分析软件ANSYS，具体分析了金属切削过程中应力和应变的变化、剪切面的形成以及温度场对金属切削的影响，并依此对刀具作强度分析，得到若干结论。

According to the identification of fossil woods, it shows that they all belong to Araucarioxylon, with the stage age of Qixia, though there are some anatomical differences among them; Following two mathematical clustering analysis methods-analysis of variance and CSDM curve, metrical numerical values are quantitatively analysed, then, skew value of curve and its relationship with leaf longevity are showed.

经过鉴定研究认为，本区的木化石均属于松柏类中的南洋杉型木属，为栖霞阶化石；应用方差分析、CSDM曲线相关分析等数学聚类分析方法，对木化石标本的测量数据进行了定量分析研究，探讨了曲线偏差值与叶寿命的关系，认为本区二叠纪木化石均为常绿树种-南洋杉型木，但有可能存在落叶树种，且生长年限有较大差异。

Stability of 14 high-cut slopes in Guangdong province is analyzed with typical rock mass structure analysis method and stereographic projection method, and with the numerical simulation method UDEC this paper simulated the excavation and reinforcement courses of the important slopes. Some conclutions and suggestions are based the analysis above.

本文结合广东某省道沿线14个高陡岩石边坡的开挖和支护方案的选择设计，运用常用的岩体结构分析方法和赤平投影方法对边坡的稳定性进行了分析，采用UDEC数值模拟方法对一些重点边坡的开挖支护进行了模拟，得出了以下一些结论： 1、边坡支护形式的选择应遵循"安全绿色、水土保持、恢复自然、环保之路"的设计原则。

The numerical examples show that the three models stated above for the dynamic analysis of strap-on rocket and the dynamic re-analysis scheme for semi-analytical finite elements are reasonable, feasible and quite effective, the models presented can be used to obtain more accurate vibration modes including the modes missed in the multibeam approximation.

本论文给出的一些计算实例表明：对于捆绑式火箭的上述三种计算模型以及回转壳的动力分析的重分析修正方案是合理、可行的，也是有效的。

it was a routine way for graph- drawing based on coordinate data in application software to program and graph processing,because from coordinate data to graph it is uniqueness.in hydrologic analysis,we calculated related data according to figure parameters,as using rainstorm isoline to reckon average rainfall in the river basin.through examples and analysis,the paper proposed methods for curve numerical translation and area calculation by vb.

在应用程序编制和图形处理的软件系统中由坐标数据可以绘出图形是常规的途径，但有曲线图形，要生成坐标数据，至今还没有通用的方法，因为由坐标生成图形是唯一的，而反过来由图形转换为数据是非唯一的。在水文分析计算时，有时需要根据图形参数进行有关数据的计算，如用暴雨等值线图计算流域平均雨给出量的时候。通过分析和计算实例提出了利用vb实现可满足使用要求的曲线数值转换和封闭图形的面积计算方法。

The paper combines investigative mode of theory analysis and numerical simulation analysis, based on elastic and plastic theory, explaining the relation of stress fields and stress- transmogrification. Then citing key stratum theory, the paper analyzing the moving rule of the stratum above the laneway along the gob, gaining some disciplinary cognition.

论文采用理论分析与数值计算模拟分析相结合的研究方式，根据弹塑性理论求解了巷道围岩的应力场及应力变形关系；进而引用关键层理论，对深井综放开采沿空巷道的上覆岩层运动规律进行分析，获得了一些规律性认识。

Spatio-temporal symmetry-breaking of temperature field in a small spatially distributed Lindemann unimolecular chemical reaction-diffusion-heat conduction system was studied by means of linear stability analysis, bifurcation analysis, and computer numerical simulation.

运用线性稳定性分析、分支分析和计算机数值模拟手段研究了小尺度空间展布、伴有扩散和热传导的Lindemann单分子化学反应体系的温度场时空对称破缺。

Fist, mode analysis is accomplished, and stiffness influence of the structure by the member parameter and the accessional columns are analysed. Then the numerical value of the pulsoting wind load was used, the time history contrastable analysis between mega-sub controlled structure and general megaframe structure has been accomplished. Finaly, the influence of vibration-controlled efficiency under the different member parameter of vibration-absorption megaframe structure is analysed.

首先进行了模态分析，讨论了钢筋混凝土巨—子型控制结构的主要结构参数及附加柱刚度对结构整体刚度的影响：利用脉动风荷载计算机模拟的荷载值，并对它和一般的巨型框架结构进行了脉动风荷载下的时程对比分析，讨论了钢筋混凝土巨—子型控制结构的主要结构参数对减振效果的影响，研究了钢筋混凝土巨—子型控制结构的动力特性。

For some rock slopes, which have not distinct failure surface, but have complicated structure or load on the top and so on, a stability analysis of this type slopes by finite element method is presented, the failure surface is defined by certain rule or strain zone from the computed model, and then the safety factor of the rock slope is abtained by finite element method and limit equilibrium methodAt last, using ANSYS , a famous commercial finite element analysis software, a example of high-steep slope which is bearing the load of the LongGe Mansion is presented, the stability of this slope is studied, as a paradign the the stability evalution of complicated high-steep slope under the action of load of building , the chapter gives some meritable reference in stability assessment of rock slopes using numerical simulation by three-dimension elastic-plastic finite element.

并用有限单元法建立边坡的具体模型，应用折减边坡岩体参数、逐级施加荷载等与边坡工作环境相似的方法进行模拟计算，根据计算结果，采用一定的判别准则或图形可视化方法，确定出边坡的滑裂面，再采用刚体极限平衡法或有限单元法计算其安全系数；最后，通过某一工程实例，用大型有限元程序对边坡在建筑物荷载作用下的稳定性进行分析研究，并以此作为计算分析复杂高边坡在高层建筑物作用下的稳定性评价的一个范例，在采用有限元弹塑性数值模拟岩质边坡稳定性方面提供一些有价值的参考。

With the increasing transportation of liquid chemicals in bulk by ships, the risk of the chemicals spill is getting higher and higher. So the reasonable numerical modeling of the spilled chemicals at sea is a key technique for the risk assessment and contingency decision-making. The sinkable chemicals spilled at sea always ended in sediment, so the design of decision-making support system for sinkable chemicals spilled shipboard have academic and applied sense.Based on the analysis for the environmental harm caused by the transportation shipboard of chemicals and research on related ordain in the international common and intestine law , the paper analysis the impelling need of establishing related respond system for contaminative accident.

随着海上液体化学品运输、中转量的不断增加，化学品泄漏风险也日益增加，对海上泄漏化学品行为进行合理、可信的数值模拟，而沉降型化学品由于最终进入沉积物而可能带来更大的潜在危险，故并在此基础上构建GIS支持下的海上溢漏事故应急决策支持系统具有重要的理论意义和实用价值。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。