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Influence of simulation parameters on simulation precision of the springback, such as elements type, material types, constitutive equations, integral point selections, contact conditions, friction rules, and like that, has been analyzed.

分析总结了数值模拟模拟参数(有限无算法、单元类型、材料模型、本构方程、积分点选取、接触和摩擦法则等)对回弹模拟精度的影响。

Consisting of the protracting graph of hydrogen-like atom"s angle distributing, computer simulation of the symmetry of molecular orbital and chemical reaction mechanism, showing the molecular point group and symmetry element, computer simulation of molecular vibration, Bravias"s crystal lattice and their transforming, extracting of plane periodic lattice, extracting of solid periodic lattice, close packing of isometrical pellet and the structure of simple mental substance, close packing of unequal pellet and crystal structure of representative ionic crystal, Computer Simulation of Phase Analysis by X-ray Diffraction.

内容包括类氢原子角度分布图的绘制,分子轨道对称性和反应机理的微机模拟,分子点群和对称元素显示,分子振动运动的微机模拟,布拉维晶格和晶格转化,平面点阵抽取,立体点阵抽取,等径网球的密堆积和金属单质结构,不等径圆球密堆积和典型离子晶体结构,X射线多晶衍射的微机模拟十个子模块。

The results are identical with the variation of the factual size of particles. By the viable datum, the average size of particles in the cross section is calculated in the dilute phase area of Circulating Fluidized Beds riser.We successfully apply the two-fluid model and kinetic theory of granular flow studying the two dimensional dense gas-solid flow characteristics in the large scale circulating fluidized beds and the cold experimental system with PIV.

在对高浓度气固两相流的研究中,根据FLUENT软件现有的条件和解决工程实际问题的需要,采用单气固相双流体欧拉模型,采用模拟紊流固粒流中普遍接受的方法"颗粒流的运动理论(kinetic theory of granular flow)",对大尺度循环流化床进行了二维数值模拟,与他人数值模拟结果和实验结果进行了对比,检验模型的准确性。

The discrete velocity ordinate method in the kinetic theory of gases is developed and applied to discretize the correspo

借助非定常时间分裂法和无波动无自由参数的NND耗散格式,建立直接求解微观分子速度分布函数的有限差分数值格式;研究并发展可用于离散速度坐标点选取和离散速度空间宏观取矩的高斯─埃尔米特无穷积分方法、等均间隔的牛顿─柯斯复合积分法、以勒让德多项式的根为积分结点的高斯─勒让德数值积分法,并应用于不同马赫数绕流模拟;通过对不同流域一维激波管问题、二维圆柱绕流问题和三维球体绕流的计算研究,并将计算结果与其他途径得到的研究结果诸如DSMC模拟值、N-S解及有关实验数据进行比较分析,创建了一套能有效模拟稀薄流到连续流不同流域气体流动问题简化的统一数值算法研究框架

The simulation result shows the collection efficiency of TIR lens model is 67% when the angle of light is confined within 15°. And the uniformity on observation screen is improved in some degree. The optimal design of TIR lens further provides the development space of LED micro-projection display system.4 On the base of the theory research and the model simulation, four projection display systems which have LCOS as micro-display panel and which combine different optical devise for UHP and LED light source respectively are proposed in this dissertation. And the quality of projection display system is evaluated by thesimulation outcome.

模拟结果表明,优化后的TIR透镜可实现将LED大角度扩展光束中67%的光能压缩到15°范围以内,并使目标屏的照明均匀性得到一定的改善,这为LED光源微投影显示系统设计提供了新的发展空间。4在以上理论研究和模拟分析的基础上,将优化和改造得到的照明光学元件应用到微投影显示的照明系统设计中,分别采用UHP和LED光源,设计了四套单片式LCOS微投影显示系统模型,通过光线追迹模拟结果,对系统性能进行了评价分析和对比。

The distillation process is simulated by using Aspen Plus with the DSTWU fractionation module and the NRTL property method results showed that 99.9% methylnaphthalene and almost 100% tritoluene could be recovered.

利用Aspen Plus化工模拟软件的DSTWU精馏模块对产物进行模拟运算。结果表明:采用NRTL物性方法的模拟计算结果能够满足工艺要求,甲基萘回收率可达99.9%,溶剂回收率可达100%。

A rational procedure is presented to solve finite element problem mixing nonlinear and elastoplastic materials. To avoid numerical problem, the incremental finite element analysis of geometrically altered structures is adopted, and a corresponding automatic finite element mesh strategy is proposed for simulating construction process of excavation.

本文采用变结构有限元分析方法,建立了一种可以灵活模拟基坑工程各种施工工况的有限元网格方法,该方法克服了现有的一些网格方法无法模拟加支撑、加锚杆或拆支撑的缺点,以及不便于计算机自动生成有限元网格的不足,可以更全面、准确地模拟施工过程,大大方便了有限元前处理工作。

However the understanding of molecular mechanistic behind the separation behavior is quite limited, which ce

本文尝试在离子交换层析的静电相互作用研究中引入计算机分子模拟技术,构筑合适的蛋白质-介质配基模拟表面,通过分子模拟计算表征相互作用的能量参数,从层析保留时间实验获得描述宏观分离行为的停留因子,实现微

This paper will conclude the experience of moot court application in our college and other colleges, and demonstrate the application and significance of moot court teaching. In addition, for the innovativeness and problems that emerge in promoting moot court teaching, the paper proposes some measures with an expectation that court teaching and the quality of law teaching could be improved.

本文首先阐述模拟法庭教学的开展过程和意义,并在总结各开办了医事法律专业的医学院校在开展模拟法庭教学中的创新点和存在的问题的基础上,提出一些改进和完善的措施,以期进一步完善模拟法庭教学、促进医事法律教学质量的提高。

Based on NewGA, the thesis proposes a multigroup parallel genetic algorithm with simulated annealing method , then combines MPGASA with BPNN. According to whether simulated anealing method is used or not, two parallel genetic neural networks are implemented respectively. Results show that PGANN_SA is superior to PGANN and NewGANN.

在NewGA的基础上首次提出一种基于模拟退火机制的多种群并行遗传算法MPGASA,将MPGASA与神经网络相结合,按照是否采用模拟退火机制接受新个体分别实现了两种并行遗传神经网络PGANN_SA和PGANN,计算结果表明采用模拟退火机制有利于改善遗传神经网络的性能。

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I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.

起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像,后来回台湾,甚至去年在北京,居然也四处看见她的海报,才惊讶她的魅力之大。

Ah may dee:You are chinese living in a democratic country.

你是居住在民主国家的中国人吧。