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极限分布

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We find fault coverage has the U-shaped window, which presents the finite ability to detect faults.

我们发现错误涵盖率会呈现一个U状的分布,也就是说明测试方法有其测试的极限。

Using this probabilistic load flow model, the probabilistic distribution of load flow and nodal voltage can be calculated, therefore the reasonable penetration level of wind power plant can be determined.

本文的方法能够求解含风力发电场的电力系统的线路潮流及节点电压的概率分布,因此可以确定风电场的穿透功率极限。

On the basis of the former researches and taking into account the practice of our country, this paper take the low period repeat loading experiment for three rigid conjunction node of steel beam and concrete wall, researching their load-bearing capacity and earthquake resistance performance under the low period repeat loading action, the main content concentrate on the following aspects:(1) Analyzing the three joint's damage shape、hysteretic curve、change of rigidity、yielding load、limit load、damage load、durability、energy dissipation capacity、the strain of the key position and the moment transferring mechanism.(2) Comparing the joint's load-bearing capacity and earthquake resistance performance among the joints with different stud bolt diameter and different connection plate thickness, researching some factor's influence on the work performance of the joint such as the high and strong stud bolt specification、connection plate thickness .

本文在前人研究的基础上,结合我国的实际情况,对3个钢梁-混凝土墙刚接节点试件进行了低周反复荷载试验,对其在低周反复荷载作用下的承载力和抗震性能进行了研究,内容主要集中在以下几个方面:(1)对3个节点试件在低周反复荷载作用下的破坏形态、滞回曲线特性、刚度变化、屈服荷载、极限荷载、破坏荷载、延性性能、耗能能力、关键部位的应变分布情况及节点核心区的受力情况进行了试验研究和理论分析;(2)比较了不同螺栓规格和不同连接板厚度的节点试件的承载力和抗震性能,研究了高强螺栓规格和连接板厚度这2个因素对节点工作性能的影响;(3)介绍了光纤光栅传感技术在土木工程领域中的应用研究现状及其基本原理;并通过对比试验,探讨了光纤光栅传感器用于土木工程检测的可行性及实现途径。

A computer simulation based on strong-weak model shows good agreement with the linear theory. The linear theory of the ion trapping instability caused by ions in equilibrium is also introduced in this paper.

包括不稳定性的增长率与中性化系数的关系、阈值与中性化系数的关系、束流的相干频率漂移和展宽、离子在空间的分布和尺寸、离子动态丢失的机制以及离子在储存环内积累的极限。

By means of the FEM, this paper analyzes in detail the stress and strain distribution in sheet metal and its varying tendency of thickness and height during cup hydrodynamic deep drawing, and sums up the roles of soft bead and cavity pressure contribution on sheet metal forming.

研究和分析了在不同成形条件下板料内部应力应变的分布、厚度的变化趋势等,总结出软拉深筋和充液室液体压力对提高板料成形极限的作用。

The distributions of stresses and strains on the section of strengthened beam are analyzed. The different formulas for the calculation of internal forces of section are deduced according to the different development stages of strain and a flow diagram for the calculation is established. With the program based on the diagram, the internal forces and some relevant parameters of the strengthened beams are calculated and the main factors which affect the ultimate bearing capacity of the beams are discussed.

分析中,着重研究了加固梁的截面应力、应变分布特点及可能出现的变化情况,给出了截面应力合力的计算公式并给出了计算框图,依据框图编程对影响加固梁正截面承载力的相关变化参量进行了计算分析并对影响极限承载力的主要因素进行了分析讨论。

First of all, this paper analyzes the distributing situation of sectional temperature of two steel frame models within an hour utilizing the transient thermal analyse module of ANSYS;Secondly, carries on the failure analysis to two steel frame models at high temperature and obtains the fire-resistant limit and critical temperature of steel frame, utilizing the static nonlinear analyse module of ANSYS and considering the influence of geometry nonlinearity and material nonlinearity; Finally, according to the fire-protection designing requirement of structure, deduce a method to computer the thickness of fireprotection layer for steel structure and ask out the thickness of fireprotection layer of two steel frame models according to this method .

首先,利用ANSYS瞬态热分析模块,分析出两个钢框架模型在一小时内钢框架的截面温度场分布情况;其次,利用ANSYS静力非线性分析模块,综合考虑几何非线性及材料非线性影响,对钢框架模型在高温下进行失效分析,分析出两个钢框架的耐火极限及临界温度;最后,根据结构防火设计要求,推导出一种钢结构防火层保护厚度的计算方法,并据此方法求出两个钢框架模型的防火层厚度。

The elastoplastic dynamic behaviors of space lattice structures are thoroughly analyzed under multiple support excitation and simple support excitation.

通过对极限加速度峰值、最大节点位移时程、塑性杆件数量和分布及网壳破坏形态这些重要参数的统计、对比、分析和归纳,剖析了大跨空间网格结构在多点输入和一致输入下的强度破坏机理。

Saddle shaped AMF can produce a radial expanding force, which has more effective effect on resisting the pinch effect of self-generated azimuthal magnetic field of arc current. This effect of saddle shaped AMF can keep vacuum arc in diffuse mode under much higher current. So the limiting current interruption capacity of vacuum interrupter can be enhanced.

为了进一步提高纵向磁场对真空电弧的控制作用,本文提出在真空灭弧室的触头间引入从触头中心向边缘逐渐增强的非均匀纵向磁场,马鞍形纵向磁场会对真空电弧产生一个径向扩张力,而纵向磁场分布的合理设计可以使这一扩张力进一步抑制真空电弧自生环向磁场对电弧的箍缩作用,从而使真空电弧在更大的电流时仍能保持在扩散态,使真空灭弧室的极限电流开断能力得以提高。

Fourier analysis of distributions, central limit problem and infinitely divisible laws, conditional expectations, martingales.

分布的Fourier分析,中心极限问题和无限可分法则,条件期望,鞅。

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With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。

Closes the eye, the deep breathing, all no longer are the dreams as if......

关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。