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In the second chapter, elementary theories and ideas of one step forming inverse approach were described and warped modification method, implemented by Cook, was introduced into one step forming simulation and based on idea of surface spreading; new quadrilateral element modification arithmetic was put forward. By spreading warped quadrilateral onto plane in local coordinate system, a plane quadrilateral element whose shape and area were equal to original warped quadrilateral element was gotten and internal force vectors of four nodes and stiffness matrix of elements were improved to increase precision of simulations on this plane element.
第二章从一步成形逆有限元法的基本理论和思想出发,将Cook基于弹性理论的四边形单元的翘曲修正算法引入基于塑性的一步成形,并且基于曲面展开的思想,本文提出一种新的四节点单元翘曲修正方案,通过把翘曲的单元展开的方法在局部参考系中得到一个与实际翘曲单元的形状与面积非常接近的平面单元,在该平面单元中进行单元刚度及内力向量的计算,进一步改善模拟结果的精度。
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Through an incentive mechanism and the driving force formed by attractive so that the employees have the power to achieve organizational goals and trigger the achievement of organizational goals; and through performance evaluation, the response by pride and rewarding.
通过激励机制所形成的推动力和吸引力,使员工产生实现组织目标的动力,引发实现组织目标的行为;并通过绩效评价,得到自豪感和响应的奖酬。
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But their bellicosity was matched by the scepticism of the Americans, and of Eisenhower in particular, who from the beginning was against the use of force by his two main allies.
但是他们的好战性却被美国人所怀疑,特别是被德怀特?艾森豪威尔所怀疑,他从一开始就反对他的两个盟友使用武力。
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If------ By Joseph Rudyard Kipling If you can keep your head when all about you Are losing theirs and blaming it on you; I f you can trust yourself when all men doubt you, But make allowance for their doubting too; If you can wait and not be tired by waiting, Or, being lied about, don't deal in lies, Or, being hated, don't give away to hating, And yet don't look too good, nor talk too wise; If you can dream---and not make dreams your master; If you can think--- and not make thoughts your aim; I f you can meet with Triumph and Disaster And treat those two imposters just the same; If you can bear to hear the truth you've spoken Twisted by knaves to make a trap for fools, Or watch the things you gave your life to broken, And stoop and build 'em up with worn-out tools; If you can make one heap of all your winnings And risk it on one turn of pitch-and toss And lose, and start again at your beginnings And never breathe a word about your loss; I f you can force your heart and nerve and sinew To serve your turn long after they are gone, And so hold on when there is nothing in you Except the Will, which says to them: hold on!
翻译成中文就是假如——假如你能——在别人不知所措却对你横加指责的时候,保持清醒的头脑;假如你能——在所有人都怀疑你的时候仍然相信自己,并能体谅别人对你的怀疑;假如你能等待且又充满耐心,或者,从不用谎言去应付谎言,也不用仇恨去回击仇恨,既不故作正经也不夸夸其谈。假如你充满梦想——但绝不做梦想的奴仆;假如你勤于思考——却不把思想当作目标;假如你能——在遇到胜利和困难时态度同样平静;假如你能容忍你所说的真理,被无赖用作捕捉愚人的陷阱,或看着你所献身的事业轰然倒塌,你能屈身拾起残破的工具把它们重建。假如你能——把所有赢来的筹码都押在一把赌注上,输光后仍能重新再来,且对输赢只字不提。假如你能——在运气不佳身心俱疲之时,仍能全力以赴抓住机遇,在一无所有只剩意志支撑的时刻,咬牙坚持到底。
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The results showed compared with the native state the shear strength of rockmass under the saturation state decreased by 11.17%, cohesion force decreased by 16.09%, internal frictional angle decreased by 10.02%.(3) 3D-σFEM numerical simulation software is used to simulate the slope stability on the native state and saturation state. Compared with the nature state the displacement of the discontinuity and stress concentration in the saturation state is largened clearly, the results showed slope stability under the rainfall is weakened.
更多含有天然结构面的岩体试件进行了不同含水量下的强度试验,试验结果证明在岩体试件处于饱水状态时的结构面抗剪强度比天然状态下平均下降了11.17%、粘聚力平均下降了16.09%、内摩擦角平均下降了10.02%;(3)采用3D-σ有限元数值软件对K86+180~K86+470段岩质边坡进行了三维有限元数值模拟,并且分天然状态分阶段开挖和饱水状态分阶段开挖两种不同状况进行了稳定性分析,从分析结果可以看出与天然状态相比,饱水状态下软弱层水平方向位移明显增大,坡脚及软弱层特别是软弱层临空面附近的剪应力值显著增大,并且其安全系数与天然状态相比也显著减小,说明在有大的降雨发生当岩体处于饱水状态时边坡整体稳定性被削弱,边坡失稳可能性增大。
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There are many agent-oriented software development methods based on the role, some of them should be paid attention to, for example: Gaia mentioned by Wooldridge 、 MASE(multi agent software engineering) put forward by America air force graduate school and Styx developed by Bush, and so on.
现有的多种基于角色概念的面向Agent软件开发方法中,比较有影响的工作包括Wooldridge的Gaia方法,美国空军研究所开发的MASE方法以及Bush等人开发的styx方法等,本文对以上方法及其他方法进行了。
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It seems to me that once eyesight goes under weaponry's scalpel It can see through human flesh Seems to me that desire pushes the world from behind It never misses a beat Seems to me the word "thrill" gets lashed by a storm Before it reaches climax Seems to me that to a starving person The world is divided into edibles and non-edibles Seems to me our life-force gets dominated by smooth breathing And coughing is definitely an insurrection Seems to me the wealth accumulated by old men Is a frozen lake for springtimes to skate on Seems to me the thriftiest folks end up treating others to envy Seems to me once you make the mirror's acquaintance, it has you dressing up for a lifetime Seems to me the person furthest ahead is not there to enjoy the view He would rather turn and watch the scene behind Seems to me two rows of teeth are nature's way of proving collective strength Which is why individuals lean toward organizations Seems to me it would take nothing more than a power blackout To unseat the 21st Century from history's stage It seems to me Peace is the minimal quest of our animal nature But the spiritual realm is filled with traps of ideals And so It seems to me the speed of bullets is most persuasive In this world, no other kind of civilization works quicker
我以为被军火做过手术的视力能把血肉看穿我以为欲望在后面不停地推动世界一次也不会落空我以为快感这个词甚至能让我在被风暴的强暴中达到高潮我以为对饥饿者来讲世界只有食品与非食品之分我以为生命一直被平顺的呼吸垄断咳嗽绝对是一种反动我以为只要老男人积累了厚厚的财富就为春天们提供了可以滑冰的湖面我以为再节省的人也免不了使用嫉妒请客我以为一旦认识了镜子就要为其打扮终身我以为最前面的人不是观赏前面的景点而是为了回头欣赏后面的风光我以为天生的两排牙证明了集体的强悍这就是个人要靠拢组织的理由我以为一旦停电就马上能让二十一世纪下台我还以为和平是动物性的人类最起码的追求精神世界则充满了更多理想的陷阱所以我以为子弹的速度最有说服力这世界还没有比它更快的文明
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The humidity resistance and the sensitivity to chemical warfare agents simulants of the tuned films were also investigated.Self-assembled LBL polyaniline films were prepared from aniline monomers by in situ polymerization and the mechanism of film formation was discussed. It was proposed that the self-assembly of polyaniline occurred through the quick absorption of aniline monomer cations or aniline monomer cation radicals on the glass surfaces by electrostatic attractions to form homogeneous polymerization centers, then increased gradually by the way of upright to the glass supports for extensity, leading to the polyaniline chain growth. The polyaniline was doped under acidic condition to absorb anionic polyelectrolyte, such as sodium polystyrene sulfonate based on the electrostatic force, or to adsorb polymer based on hydrogen-bonding interactions, for example Polyvinyl Alcohol, and then recycled to fabricate_n or_n self-assembled multilayer films.
跟踪了原位聚合的具有纳米结构的聚苯胺多层自组装膜的成膜过程,提出了该自组装膜的成膜机理:聚合反应初始阶段的苯胺阳离子或苯胺阳离子自由基通过静电作用快速吸附到带负电荷的基片表面,形成均匀的聚合中心,然后以垂直于基片的方式进行链增长生成PANI;PANI在酸性条件下经现场掺杂后带正电荷,再通过静电作用吸附带负电荷的聚电解质如聚苯乙烯磺酸钠,或通过氢键作用吸附聚合物如聚乙烯醇,这样循环LBL-SA即得到_n或_n等原位聚合聚苯胺自组装膜。
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In this paper,the raft is approximated by a thin plate with regular shape at first.Then the floating raft system is divided into several subsystems,such as plate raft,elastic foundation,etc,which are respectively modeled by four-parameter net method.After that,dynamic absorber and active absorber are put into a uniform frame to obtain the model of plate raft subsystem coupling with them.At last,according to the force and velocity relationship among each subsystem\'s interfaces,the entire plate floating raft system is modeled by subsystem structural admittance synthesis method.As the main structure of floating raft system is elastic,it is inevitably to study the optimization of actuators\' mounting positions before designing control law.In this paper,two new criterions are proposed for it.
本文首先将浮筏的中间筏架用一个规则形状的薄板近似;然后再将浮筏系统分解成若干个子系统,如板式筏架子系统、弹性基础子系统等,运用四端参数网络建立了它们的动力学传递方程,传递特性由导纳矩阵描述;接着,将动力吸振器和主动吸振器的(来源:ABC90论文00网www.abclunwen.com)分析统一于一个框架内,获得了与吸振器耦合的板式筏架子系统的动力学传递特性;最后,根据各子系统在各界面上的作用力和速度的相互关系,通过子系统结构导纳综合方法获得了整个板式浮筏系统的动力学传递方程,并在此基础上获得了系统的力传递函数模型。
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Based on the elastic theory of large deflection and by taking into account the variation of the axial force and its effects on bending deformation of the drillstring in vertical section ,the vibration of the drillstring induced by fluctuating weight on bit is described by a parametrically excited system.
基于弹性大变形理论,考虑到轴力沿钻柱轴线的变化及其对钻柱弯曲变形的影响等因素,将受自重作用的铅垂井段钻柱在波动钻压激励下的振动转化为一个参数激励系统,用 Galerkin方法首次得到了描述此系统的 Mathieu方程,并通过将方程的解展成富里叶级数的方法,得到了该振动系统的动力分岔值曲线及其所包围的动力不稳定区。
- 推荐网络例句
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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。
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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。
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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。。。。。。