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The experiment and theory proved that the wear resistance and fatigue resistance of the ductile iron crankshaft could be greatly improved,and also the uniform layer of hardness and residual stress could be obtained by the second method-the laser circumference continuously scans the neck of crankshaft,and the laser forms 45°angle with the central line of crankshaft to scan the partial filleted angle of the crankshaft.

实验与分析证明:采用轴颈周向螺旋扫描,过渡圆角处激光束与轴心线成45°角的部分圆角的激光扫描处理方法,更能获得较为均匀的硬化层和残余应力,从而达到了提高曲轴抗磨损,抗疲劳的综合机械性能。

Analysis of the materials to forecast the rockburst is necessary. Surrounding rockburst can be foreboded. It can afford the reference to following construction and ensure the safety excavation.

本文通过洞身段围岩稳定性分析的结论,结合围岩岩石全过程应力-应变实验和等围压三轴实验资料,对隧道洞身段的围岩岩爆进行了分析和预报,这为隧道后期的施工与安全提供了较有意义的参考。

An Mohr circle is graphed according to values of the traixial strain and confining stress. Besides, failure theory and strength parameters: C andΦare obtained through analyzing the curve fitting.

2根据砂岩的三轴峰值应力和围压,绘制了莫尔圆;采用回归分析得到了强度准则和强度参数C、Φ值等。

The incremental method was used to calculate the tri一axial thermal stresses incasing.

这个增量法计算三轴容位的热应力。

In this paper, a testing method for photoluminescence spectrum of GaAs under external uniaxial stress paralleling [110] direction is presented.

研究了一种 GaAs 层结构在[110]方向外部单轴应力下基于光致发光谱的测试方法。

Top sintering material preheats for a short time、sinter at lower temperature、cools too fast and has low crystallinity, especially, network SFCA offorms difficultly in the top layer, that results in high ratio of pore, so the strength of top sinter is low. when thickness of sintering material is increased, the ratio of top sinter will be decreased, in its entirety, the strength of sinter will rise.

5烧结矿破碎属脆性断裂,一般在单轴压缩应力下受剪切产生,本文基于低氟烧结矿物质组成,导出了基体抗压强度与烧结矿物质组成的关系式,由此得出,基体抗压强度受磁铁矿影响不大,而受铁酸钙影响较为显著。

The sclera samples obtained after one month, two months, three months and six months were axial tensed in pretesting, relaxing, creeping and deforming. A series of dates and curves that represent conventional mechanical properties and viscoelastical properties were obtained.

选择简单可行的轴向拉伸的实验方法,分别对术后1月、2月、3月、6月加固条带区及对照眼相应区等5种兔眼巩膜试件进行预拉伸、应力松弛、蠕变及破坏的生物力学实验研究,得到一系列表示常规力学性质的数据和曲线,并进行统计、比较。

The specimens of 6063 aluminum alloy are tensioned under different stress triaxiality and different strain rates,the mechanical properties of 6063 aluminum alloy can be drawn.

对6063铝合金试样在不同应力三轴度和不同应变率下进行拉伸试验,得到了该合金在这两种情况下的力学性能。

With the universal application of computer and development of numerical implementation, building member models fitting reality by computer can calculate buckling bearing capacity of axle loading members under effect of residual stresses.

随着计算机普及应用和数值分析方法的不断发展,可以通过计算机建立与实际吻合的构件模型,较准确、快捷地计算出残余应力影响下的轴压构件屈曲承载力。

Based on the ultimate equilibrium theory, the ultimate cross-section bearing capacity formula of the column under axial-load was given. Moreover, the main influencing factors on increasing the axial-load bearing capacity were analyzed to determine the relationships between the stress of different components and hoop confining index.

采用极限平衡理论建立组合柱截面的力学方程,确定了短柱轴压承载力计算方法;并进一步分析了提高组合柱轴心抗压承载力的主要影响因素,确定了极限状态下各部分应力值与套箍指标之间的关系。

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在美国,慢性酒精中毒,肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题,你可以随时联系我。

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