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This article mainly simulates gradually damage destruction process of rock, major in determinationg the definition of rock three-dimensional damage tensor, simplify to the damage tensor and obtain its engineering calculation method, and obtains the basic expression form of equivalent stress by equivalent stress assumption, symmetrization to the actual stress, thus obtains construction relation of the festival principle of three-dimensional damage rock mass, finally couples elasticity- plasticity with damage in the finite element equation, with reference to elasticity-plasticity gradually degenerated method thought, simulates rock damage to advance gradually the destruction process in finite element method, draws up elasticity - plasticity and damage coupling two-dimension finite element procedure with the C language in the VC contact surface, by simulating experiment destroyed process, acquires destruction image and the axial load distortion curve of model, agreement with the experimental result.

本文主要模拟岩石渐进损伤破坏过程,确定岩石三维损伤张量的定义,对损伤张量进行简化计算并得出其工程计算方法,采用等效应力假设得出有效应力的基本表达形式,对有效应力进行对称化,得出节理损伤岩体的三维本构关系,在有限元方程中实现弹塑性和损伤耦合;借鉴弹塑性渐进退化方法的思想,采用有限元的方法模拟岩石损伤渐进破坏过程,用C++语言在VC界面编制了弹塑性和损伤耦合的二维有限元程序,通过模拟已有的实验破坏过程,得出模型的破坏图像和轴向荷载变形曲线,与实验结果基本一致。

In the paper,the simulation model of mineral processing is given,the automatic solving method of sequential modular approach for simulation calculation is described,the system partition method based on reachability matrix method is introduced,and then,according to process topological structure,the ring break method based on breadth-first searching of directed graph is proposed.

首先给出选矿流程模拟模型;接着阐述了序贯模块法用于选矿流程模拟计算的自动解算方法,给出了基于可及矩阵法的系统分块方法,根据选矿流程拓扑结构特点,提出了基于有向图广度优先搜索的环路切割方法;说明了基于序贯模块法的流程模拟软件设计思路。

Through the design of AGP-test equipments and methods which could simulate the impact of input of exogenous nutrients on eutrophication, the evolution of algae and aquatic species extinction process in Miyun Reservoir under different environmental and nutritional conditions are simulated. Then the ratio growth rate in the three simulation stages are simulated and analyzed combining the numerical analysis software MATLAB 7.0. At last, the conclusion that in the three designed stage, the total phosphorus threshold which leads to a water bloom in Miyun is respctively 0.053mg/L, 0.062mg/L, 0.064 mg/L is educed. Based on the regression relationship of total phosphorus,chlorophyll-a, total nitrogen, and the transparency,we compartmentalized the evaluation standard level of eutrophication in Miyun Reservoir.

通过设计模拟外源输入对富营养化作用的AGP试验装置和方法,模拟了不同环境条件、营养条件下密云水库优势藻种演变和富营养化过程,结合使用MATLAB 7.0数值分析软件,对3期模拟时段的比增长率进行拟合分析,得出3期设计阶段密云富营养化发生的总磷阈值为0.053mg/L、0.062 mg/L、0.064 mg/L,再根据总磷与叶绿素a、总氮、透明度之间的回归关系,划分了密云水库富营养化的评价标准级别。

First, a new model, TSTG (Timed Symbolic Transition Graph) is presented along with its semantics theory. An algorithm deciding timed bisimulation is developed based upon the idea of symbolic bisimulations. Model checking algorithms has played an very important role in verifying systems.

在分析与验证算法的设计方面,在新的计算模型基础上,我们分析了实时传值进程间各种不同互模拟的特点以及判定方法;尤其针对时间互模拟,根据符号互模拟的思想,本文给出了一个时间符号迁移图上的判定算法并证明了算法的正确性。

A simulated burnt piece of coal or wood, usually a plastic casing having a wood-like or coal-like coating, with a light source mounted therein, and a strip of cloth having a shape of fire flames billowed above the simulated burning medium by blowing wind. A vision of jiggling fire flame may be viewed through a partially translucent screen made of plastic.

现有的电壁炉火焰模拟装置中,一类装置为模拟煤炭或树枝状碳块的燃烧介质,通常这些燃烧介质由表面涂有树枝状木材颜色的塑料壳体替代,里面装有一组灯泡光源,来模拟燃烧树枝状木材时的效果,再用一组火焰形状的丝绸布料飘带悬挂在燃烧介质上方,通过空气的吹动来带动飘带飘动时的投影效果,通过半透明的塑料屏幕与镜面玻璃,可以看到火焰闪动的视觉景象。

The principles and steps of the methods were introduced, the sixth grade track ire-gularity PSD of U.S. railway samples in time domain were achieved by simulating trigonometric series respectively, the samples were taken as the inputting disturbances of a vehicle-track vertical dynamics model, the time response courses of vehicle system we- re obtained by numerical simulation.

介绍了国内外常用的轨道不平顺数值模拟方法的模拟原理和步骤,采用计算机仿真程序模拟出三角级数法生成的美国六级轨道不平顺谱时域样本,并以此作为车辆一轨道垂向动力学模型的输入激励,通过数值仿真得出系统的时间响应历程。

The analysis and simulation of dynamic/static performance of the HHCS shows that it is a large inertial system, and that there are such adverse factors in HCS and its model test system as nonlinear, dead zone, time variable parameters e.

最后根据所建立的数学模型和提出的仿真建模方法,论文建立了重载升沉补偿系统的静态特性仿真模型,建立了重载升沉补偿系统及其模拟试验系统、中载升沉补偿模拟试验系统、轻载升沉补偿模拟试验系统的升沉补偿的仿真模型。

In order to compare the theoretical price and real price of the warrants, this paper use control variate method to compare the GARCH Model and BS Model. The theoretical price of BS Model is used as control variate call option.

欲比较所模拟的权证理论价格及权证实际的价格,本文加入了控制变异法来进行模型的比较,以Black-Scholes模型的模拟价格当作控制变异买权,然后模拟出控制变异法的理论价格。

The results show that the propagation delay is less than 1ns, the ratio of input and output impedance is up to 10〓, realizing a little insert dissipation at high-speed operation, laying a solid foundation for the materialization of high-resolution one-way analog switch A/D converter. 2. A new structure of the high-speed CMOS voltage comparator circuit for the improved nonoffset cancel circuit, which can satisfy the needs of the 8-bit linearity.

模拟结果表明,基于CMOS工艺实现的BiCMOS单向模拟开关的传播延迟小于1ns,开关的输入输出阻抗比高达10〓以上,实现了高速工作下的极小插入损耗,为实现高精度单向隔离模拟开关分步法A/D转换器奠定了基础; 2、基于满足八位线性要求的前提,本文提出了一种改进的无失调取消电路的高速CMOS电压比较器新结构。

On the base, integrated development environment of VB is used to develop software of simulation and optimization of AHT cycle system. After the software ASS is developed, it is applied to an industrial instance, including process simulation, thermal analysis and specific heating load optimization.

在此基础上,利用VB集成开发环境,展开了AHT吸收循环系统模拟优化软件的开发工作,并开发出软件ASS,实现了过程模拟优化计算,包括:过程模拟、热力学分析和比供热率优化等计算模块。

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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。