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Then through dynamical analysis, every instantaneous acceleration distributing of slope under dynamical earthquake can be got too. According to this result, adding earthquake force to structure by way of inertial force, this paper analyses the slope stabilization by using FEM strength reduction method and gains every instantaneous safety factor and its corresponding slide. Curves of safety factors versus duration can be made by curvefitting. By safety factors versus duration curves and slides, we can value structure's quakeproof stabilization and point its slide out. By these principles, programs of FEM stabilization analysis for each moment are organized.
首先通过三维非线性有限元静力分析得到动力分析的初始应力,再进行动力分析得出边坡在动力作用下每一瞬时的加速度分布,根据每一瞬时的加速度分布的结果,将地震作用力作为惯性力加在结构上,用有限元强度折减法进行边坡稳定分析,得出在地震动力作用下每一瞬时的安全系数及对应滑裂面,拟合可得到一条安全系数随时间变化的曲线,根据这条安全系数时程曲线及滑裂面,综合得出结构的抗震稳定安全系数及对应的滑裂面。
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Results FPCL contraction is due to the traction force generated by fibroblasts. The traction force is a compound force exerted by extension of cellular pseudopod and contractile structure in cytoplasm.
结果 FPCL的收缩是由成纤维细胞产生的一种牵拉力而引起,该力是一种复合式动力,由细胞突起的延伸运动与细胞浆内的收缩结构共同产生。
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The results show that, with the expansion cone angle remaining unchanged, the sizing length of expansion cone does not have much effect on the residual stress of casing after expansion, but it has much effect on the expansion force required by tube expansion. The expansion cone angle has no effect on the maximum residual stress of casing, but it has remarkable effect on expansion force. When the radial component force of expansion force is greater than the material's tensile strength, the damage to the material will arise.
研究结果表明,在膨胀锥锥角保持不变的情况下,膨胀锥定径长对膨胀后套管的残余应力没有太大影响,但对套管膨胀所需要的膨胀力有较大影响;膨胀锥锥角对套管最大残余应力没有影响,但对膨胀力的影响十分明显,当膨胀力的径向分力大于材料的抗拉强度时,材料将发生破坏。
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The force of potential sliding body is determined using the FISH program of 3DEC based on Limited Equilibrium Method. And the sliding force and resistance force of potential sliding body are obtained by the resolution of acquired body force along the potential sliding plane. Thus the varied factor of safety of the slope under seismic loads is obtained.
借鉴块体极限平衡分析思想,并考虑了地震动荷载的全时程特征,利用3DEC中FISH语言编程求出了潜在滑体的受力并将其沿潜在滑面分解求得潜在滑体的下滑力和抗滑力,从而求出了地震荷载作用下边坡的动安全系数历时曲线。
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Dynamic cutting force is a basic parameter and it directly influences relative displacement between tool and workpiece, tool wear and surface quality in turning operation. Therefore, simulation model of dynamic cutting force is an important part of machining physical simulation research. Cutting force models commonly used are empiristic equations. These equations are often based on statistical analysis of machining data, obtained via changing one or more machining parameters, whilst fixing others. But a complete turning process and nature of force can not be accurately described by means of these models.
动态切削力是切削加工过程中的基本参数,其动态变化直接影响加工过程中刀具与工件的相对位移、刀具磨损和表面加工质量等,因此动态切削力的预测仿真建模是切削过程物理仿真研究的基础,但是目前大多使用经验公式描述动态切削力,这些经验公式多少存在一些不足,难以完全真实地反映在整个切削过程中力的变化历程和变化特点。
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In this research, the pubertal five-week-old SD rats were chose as experimental object to establish the animal model for simulating maxillary protraction, on which was imposed the orthopedic force of 85g with utilizing the self-devised maxillary protraction appliance. Located lateral X-ray cephalograms were taken to measure and analyze the changes of maxillary development after exerting the orthopedic force for 4 weeks. The technique of immunohistochemistry was used to investigate theexpression of TGF-, in frontomaxillary sutures and palatomaxillary sutures with identical force performing for different extent of time. The average hue was selected as indicator, which was measured by the means of the analysis system of pathological color images. The measuring data were analyzed by the one-way ANOVA in software SPSS 11.0 version.
本研究采用自行设计的上颌前牵引装置,以生长发育期5周龄SD大鼠为实验对象,施加85g的矫形力,建立了模拟上颌前牵引的动物模型,通过X线头影测量分析,观察施力4周后上颌骨的生长发育情况;应用免疫组织化学技术,检测同一力值作用不同时段下TGF-β_1在上颌骨的额颌缝、腭颌缝的表达,彩色病理图象分析系统测定每张切片中阳性染色细胞的平均灰度值,结果采用SPSS 11.0进行方差分析。
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Safety Belt Force Limit Furling Device: In order to avoid the accident to the aged people and children caused by the force of collision on the safety belt, the force limit furling device will take effect when it exceeds the certain limit of the tension force (450-650kg), make the core of furling devicehave several rolls on the axis, to pull out several of it.
安全带限力卷收器:为了避免撞击时承受普通安全带的力过大而造成对老弱和年幼者的意外伤害;限力卷收器在织带收紧力超过一定限度(一般设定为450-650KG)时开始作用,使卷收器芯轴旋转数圈,从而使织带拉出少许。
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Safety Belt Force Limit Furling Device: In order to avoid the accident to the aged people and children caused by the force of collision on the safety belt, the force limit furling device will take effect when it exceeds the certain limit of the tension force (450-650kg), make the core of furling device have several rolls on the axis, to pull out several of it.
安全带限力卷收器:为了避免撞击时承受普通安全带的力过大而造成对老弱和年幼者的意外伤害;限力卷收器在织带收紧力超过一定限度(一般设定为450-650KG)时开始作用,使卷收器芯轴旋转数圈,从而使织带拉出少许。
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The paper describes how the local force of the main web is considered as the force caused by the Contact pressure among the trolley wheel, rail and top flange, and how the contact analysis model for the local force is built by means of both Hertz theory and finite element software ANSYS combined. Also, it analyzes the variation of the local stress under the different conditions and comes to a conclusion, and compares the results derived from the experimental formula with the result from ANSYS.
本论文的主要内容:将Hertz接触理论和有限元软件ANSYS结合起来,把主腹板的局部受力问题视为小车轮与轨道及轨道与上翼缘板之间发生接触行为作用下的受力问题,建立了小车轮压作用处偏轨箱形梁主腹板局部受力的接触分析模型,研究不同情况(小车轮压、箱形梁几何参数和轨道截面惯性矩)下局部应力的变化规律,得出相关结论;最后将经验公式解与ANSYS数值解进行对比分析论证。
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When inertia force ofa transmission shaftdoesnotchange, itsmaximum transversaldisplacement is equal to the sum of the static deflection produced by inertia force and gravity and the amplitude ofdeflection induced by eccentric mass, and when inertia force of a transmission shaft changes, dynamic deflection is produced.
惯性力不变时,传动轴的最大横向位移等于惯性力和重力产生的静挠度与质量偏心产生的动挠度幅值之和;惯性力变化时,传动轴产生动挠度。
- 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。。。。。。