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The main tool wear styles are crater wear , boundary wear and groove wear under different cutting conditions when turning 0 , while the main breakage styles are desquamate of tool rake face and tool flank .

在不同切削条件下车削加工0Cr18Ni9不锈耐热钢的刀具磨损形式主要是月牙洼磨损和后刀面磨损及边界磨损和沟纹磨损;主要的破损形式是前刀面剥离和主后刀面剥离。

The main tool wear styles are crater wear , boundary wear and groove wear under different cutting conditions when turning 0Cr18Ni9 , while the main breakage styles are desquamate of tool rake face and tool flank .

在不同切削条件下车削加工0Cr18Ni9不锈耐热钢的刀具磨损形式主要是月牙洼磨损和后刀面磨损及边界磨损和沟纹磨损;主要的破损形式是前刀面剥离和主后刀面剥离。

After analyzing the curvature of the forming surface and the relativ emotion between the forming surface and the curved tooth surface during envelope tooth cutting,the authors work out the equations for calculating the induced normal curvature and geodesic deflection,the principal curvature and direction of the tooth surface of this kind of circular-arc gear .

通过对产形面曲率和包络切齿时产形面与齿曲面相对运动关系的分析,推导出双向圆弧齿轮齿面的诱导法曲率、诱导短程挠率和齿面的主曲率、主方向等计算公式。

Based on investigating the short and intermittent structural plane, surrounding rockmass of the huge underground powerhouse in Three Gorge has been divided into five statistical similar areas according to its characteristic of rockmass structure by applying structure plane network simulation. Distributed characteristic of structural plane has been studied and based on it mechanics macrocharacteristic has been studied:(1) It is the first time that based on the result of structural plane network simulation rockmass quality of every structure area has been studied with applying blurred information optimum seeking technique and be compared with and RQD method. The result indicated that it has better effect to evaluate rock quality with blurred information optimum seeking technique.(2) It is the first time that the interrelated relationship of the result of in-suit rockmass deformation test and fractal characteristic of structure on test point has been applied to determine rockmass deformation parameter. The question of evaluating deformation parameters of engineering rockmass has been solved.(3) Anisotropy strength parameters have been determined by applying shear zones simulating method. The result indicated that there are different strength parameters in every structural area, after comparing the result of Fast Lagranian Analysis in continua number simulation method with that of method of weighted mean according to continuity. The result indicated that when a suitable reduction coefficient is been considered rockmass strength parameters can be simply and fast determined with method of weighted mean according to continuity where there is not enough test result.(4) Damage characteristic has been studied based on analysis fractal characteristic of structural plane network by applying fractal-damage coupling method. It is the first time that the concept of damage degree has been set up to evaluate rockmass quality according to the biggest principal damage.

通过对短小、断续性结构面统计特征的研究,将地下厂房区划分为五个岩体结构统计均质区,应用结构面网络模拟技术研究了各个岩体结构均质区结构面的发育分布特征,并以此为基础对岩体宏观力学特性进行了深入研究:(1)首次通过在结构面网络模拟计算结果的基础上,应用模糊信息优化技术研究了厂房区各个岩体结构分区的岩体质量并与岩体基本质量指标研究法、岩体质量指标RQD值研究法作了对比,结果表明以结构面网络模拟结果为基础,应用模糊信息优化技术进行岩体质量评价能够取得很好的效果,解决了工程岩体质量的定量评价问题;(2)首次通过对已有的现场大型岩体变形试验结果的分析及相应试验点岩体结构分形特征的研究,建立了结构面分布的分形维数和岩体变形指标间的相关关系,并首次应用这种相关关系根据结构面网络模拟及分形维数计算结果确定了缺少试验结果的地下厂房各工程部位的岩体变形指标而且应用于围岩稳定性计算,解决了工程岩体宏观变形参数的评价问题;(3)应用在结构面模拟网络图上模拟岩体剪切破坏带的方法,得出了岩体在不同方向上的强度参数,结果表明岩体的强度特性与结构面的发育方向和程度有着明显的关系,各个岩体结构均质区具有不同的强度参数;同时还通过应用拉格朗日差分法对岩体强度指标的数值分析并与按连通率加权平均计算法对比表明,按连通率加权平均计算法在考虑合理的折减系数情况下,可以简单快速地对缺少现场大型试验结果的具体工程部位实现岩体强度指标的估计,通过以上研究解决了工程岩体抗剪强度参数的评价问题;(4)通过结构面网络分形维数的研究,应用分形损伤耦合分析方法,研究了厂房区岩体的损伤特征,并首次引入"损伤度"的概念,建立了应用最大主损伤评价岩体质量的指标体系。

The research of this thesis is under the circumstances that the international shipping center of Shanghai builds Yangshan deep water port project, first of all, through its SWOT analytical method analyze Shanghai maritime affairs situation, maritime affairs office existing boat policy, Yangshan deep water port hydrometeorological situation, analyze the present main ship type, to explain the background of the choice the ship the small waterline, to put forward the necessity of building small water-plane area twin hull maritime affairs patrol ships. Then, it introduces the principle, characteristic of the small waterline, and has analyzed the domestic and international state of development of the SWATH ship, and conclude that it is feasible to build SWATH maritime affairs patrol ship technical, through the research and analyze of design at home and abroad,; Then it analyzed the application of the SWATH ship in maritime affairs manage both at home and abroad, put forward the preliminary scheme, and carry on research to the economic performance of technology of the scheme, through putting forward the preliminary model of plan of design to main yardstick and selecting type of host computer finally after relatively optimize, and confirm design specifications .

本文的研究是在上海国际航运中心建设核心工程洋山深水港的大前提下,首先,通过利用SWOT分析方法分析了上海海事局面临的形势,对上海海事局现有航政管理船舶现状进行分析,对洋山深水港海域的水文气象情况进行了调研,对当前主要船型进行分析,对选择小水线面船的背景加以阐述,提出建设小水线面双体海事巡逻船的必要性:接着,对小水线面船的原理、特点加以介绍,并对小水线面船国内外发展状况进行了分析,对国内设计建造小水线面双体海事巡逻船的技术可行性进行了研究分析,得出国内设计建造小水线面双体巡逻船在技术上是可行的;然后对国内外应用于海事管理等工作的小水线面船型进行分析,提出初步的方案,并对方案的技术经济性能进行研究,通过对主尺度和主机选型等进行比较优化后最终提出初步的设计方案模型,并确定设计任务书。

By assuming the grouting curtains to be block elements cut by relatively unpermeable discontinuities, and the drainage curtains to be plane discontinuities according to their main strike and dip angles on the basis of equivalent flow, they can be brought into the blocks and discontinuities system and be modeled conveniently.

本文假定防渗帷幕是由相对不透水结构面切割而成的块体单元,并根据流量等效的原则将岩体中的排水孔幕按其主倾向和主倾角等效成为平面结构面,从而将防渗帷幕和排水孔幕都纳入到块体和结构面系统中,统一进行数值模拟。

The coarsened structure perpendicular to primary crack plane exhibits better propagation resistance than that parallel with primary crack plane, but it seems that crack propagation property at high temperature can not be improved by changing γ′precipitates morphology.

颗粒形态不会改变裂纹扩展路径及微观机制,粗化结构的疲劳裂纹扩展阻力随温度升高而降低的趋势比原始结构剧烈,同时与主裂纹面垂直的粗化结构具有比与主裂纹面平行的粗化结构更好的疲劳裂纹扩展抗力,但通过改变γ′形态似乎不能改善高温下裂纹扩展性能。

The results show that space finite analysis results are close to test ones, bottom chords suffer axial force and large in-plane bending, and the max stress is nearby each middle internode. The max stress of node crossbeams occurs in No.2 bottom flange, and that of internode crossbeams happens in ones lying in the middle of every internode. The concrete slab is in tension at the longitudinal direction, and also suffers bent at vertical loads. The degree of completely-composite model taking part in the combined actions is about 55%, while that of semi-composite model is 42%-43%. The combination of concrete slab and bottom chord increases the degree of floor system taking part in the combined actions, lightens the burden of bottom chord, and reduces out-of-plane bending of node crossbeams especially the ones near bridgehead. Stress and displacement of main truss can be evaluated by a equivalent plane rigid frame in preliminary design, and effective stiffness of bottom chords are composed of original ones and concrete slab, and the concentrated load from deck can be translated into uniform load.

研究结果表明:空间有限元分析结果与试验结果较吻合;下弦杆受到轴向拉力和较大的面内弯矩作用,各节间最大应力出现在节间中点附近;节点横梁最大应力发生在横梁2的下翼缘,节间横梁最大应力发生在位于端节间中部的小横梁上;混凝土板顺桥向整体受拉,并在竖向集中荷载作用下产生弯曲变形;全结合模型大部分节间内的桥面板参与主桁共同作用的程度为55%左右,半结合模型桥面板的参与程度为42%~43%;桥面板与下弦杆结合能够增加桥面板的参与程度,减轻下弦杆荷载,减少节点横梁尤其是靠近桥头横梁的面外弯曲;对桥梁进行初步设计时,主桁杆件的位移与内力可按照1个等效的平面刚架计算,下弦杆的等效刚度由原下弦杆截面和混凝土桥面板截面组合而成,桥面荷载可转化为均布荷载施加。

B light to intermediate transfer website performance is if the full-color printed a thick and strong, can be used instead of ultrafine 300, 400-mesh point to no buyang, but there are in the supporting this super fine wire is not a good business card printing and membership card production, resulting in the whole-tone, so use with four color separation business card printing and membership card production, decreased slightly in the optical Department, dot by LC, LM on magenta and supplemental lighting of a thick and are some of the use of laodelphax LB the light grey, LR on peach, LG 浅紫 light-green, LV, and so on secondary light-coloured, and this is the kind of color by the car and it came to technical method of extension, how to make sure the complementary color concentration and minus four dot color separation, is out on the relationship between the original and buyang is the most difficult technical staff must villagers'participation.

平部到洋间调的网不面表示不若印满版色菲薄无力,可以改用超粗300线、400线以上钩不面来弭补,但有见於这栽超粗网线并欠好制卡和会员卡制作,造不败整版色调不佳,所以改用以四色版制卡和会员卡制作,在平部稍降网不面百分比,由LC不深蓝、LM不深洋赤等来补平部之菲薄感有些搁置LB灰不深灰、LR不深桃、LG不深红、LV不深紫等二不主色不深色为之,这是栽由手工开色石版法蔓延来的技艺,如何拿捏补色浓度及增去原有四色版网不面百分比,是开不入来本来及补不出色版时技艺职员最不易也是务必的考量。

You taught me the road I should walk, that I slip not over to the line of death.

主﹗你是我最知心的朋友主﹗你是我最亲爱的伴侣我的心在天天追想著你渴望见到你的面在我人生的每一个台阶在我人生的每一个小站你的手总是在搀拉著我把我带在你身边告诉我当走的路﹐没有滑上死亡线你爱何等的长阔深高﹐我心发出惊叹有了主还要甚麼﹖我心与主心相连我已起誓要跟随主﹐永不改变

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