• 研究了铺装层应力分布,回归统计作用次数增加应力应变变化规律

    The regression statistical method has been used to analyze the law of stress and strain as The Times under the function of axial load increases.

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  • 根据膜片弹簧工作过程中应力分布及变化规律,得到强压时膜片弹簧变形量数值强压所需次数

    According to the rules of the stress distribution, the maximum deformation of diaphragm spring and the minimum number of forced compression needed are proposed.

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  • 随着冷热循环温度区间温差增大、冷端温度的降低、循环次数的增多,形成的应力材料的界面损伤越严重;

    The interfacial failure due to thermal stress will increase with increasing the range of temperature and the number of cycles.

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  • 随着夯次数增加应力在有效加固范围内的增加更加明显,35击后基本稳定

    The dynamic stress change is more markedable with the tamp time increasing, but it approaches stable when the tamping time increases 35 times.

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  • 结果显示循环载荷试验加载水平循环次数增加会造成残余应力进一步累积

    The results show that the residual stress of pile is further accumulated in the cyclic loading tests as the number of loading cycles and the level of cyclic loading increase.

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  • 研究结果表明经受冲击荷载作用应力–应变关系曲线一般随冲击次数的增加而升高,表现强度的增大;

    The studies show that the stress-strain curves of clay samples subjected to impact loading are higher than those before subjected to the numbers of impacts, which show the increase of shear strength.

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  • 此外给出了饱和砂土液化破坏时破坏面上循环应力循环荷载次数一般关系。

    In addition, the generalized relationships between cyclic shear stress on failure plane and the number of cyclic loading causing liquefaction of the sandy soils are also presented.

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  • 强度曲线显示循环应力循环剪切破坏次数对数基本直线关系

    The dynamic strength curve indicates that there is basically a linear relationship between the cyclic stress ratio and the logarithm of the cyclic number required at failure.

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  • 循环应力真空环境中的疲劳断裂次数可比室温大气环境中的高4

    Under lower cyclic stresses, the fatigue cycles to failure in vacuum is increased approximately 4 times than in air.

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  • 应力大于应力阈值时,氢化物应力再取向程度随着应力、温度循环次数增加而增大

    When applied stress is higher than the threshold stress, the level of hydride reorientation increases with the increase of stress and the number of temperature cycling.

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  • 随着应力增大和温度循环次数增加,氢化物取向程度增大,但是氢化物发生再取向存在应力阈值

    When hydride reorientation takes place, there is a threshold stress concerned with the number of temperature cycling.

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  • 发射计数峰值应力水平有关,峰值次数破坏后主裂缝的条数相对应。

    The peak value of acoustic emission counts rate depends on stress state; and the amount of peak value is equal to that of major crack after failure.

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  • 基础上,分析双轴-压极限强度随冻融循环次数的变化规律,应力空间面体应力空间建立同时考虑冻融循环次数和拉压破坏准则

    On this basis, the failure criterion of concrete simultaneously considering the freeze-thaw cycle and tension-compression ratio in principle stress space and octahedral space is established.

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  • 应力越高,在可以预料破坏之前循环次数越少

    The higher the stress the fewer will be the cycles before failure can be expected.

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  • 高低复合疲劳研究采用了正交试验设计的方法,并以此为基础综合研究了应力、高低周应力、高周循环次数高周循环频率对复合疲劳寿命影响及其机理。

    Based on the orthogonal test design, this paper studied the effect of low cycle stress, high-low cycle stress ratio , high cycle number and high cycle frequency on complex fatigue life.

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  • 循环应力真空环境中的疲劳断裂次数可比室温大气环境中的多23

    Under lower cyclic stresses, the fatigue cycles to failure in vacuum is increased 2 or 3 times.

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  • 提出一种迭代方法计算刚体幂次硬化材料结合界面端的塑性应力奇异次数

    An iterative method was proposed to determine the elastic-plastic singularity at the interface edge of a power-law hardening material bonded to a rigid substrate.

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  • 在上海地区典型饱和软粘土排水循环三轴试验基础,分析了影响软粘土塑性累积变形主要因素:循环荷载的作用次数初始应力循环加载动偏应力

    It was shown that the cumulative plastic strain depended not only on the applied cyclic stress and number of cycles, but also on the initial static deviatoric stress level.

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  • 断层影响30范围应力陡变范围内冲击地压发生次数全部次数的90 %。

    The area of 30m which is influenced by fault is a sudden change area in stress, and 90% of all rock burst frequencies take place in this area.

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  • 研究表明,随拉压循环次数增加应力钢筋集中,钢筋承受拉力随之增大,抗拔大部分由底部锚固提供

    The study shows that the stresses are concentrated in the reinforcing steel bar and increase with the number of cycle. The bolted body of bottom mainly provides anti-pull bearing capacity.

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  • 纳米梁电学测试,反复扫描电流产生会减小梁上张应力从而使电阻随扫描次数增大

    The scan electric current decrease the tensile stress in the nano-beams, so the electric resistance increase with the scan electric current times.

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  • 指数函数波浪和海冰作用下平台构件疲劳应力应力循环次数环境参数关系进行合,拟合精度好。

    The exponential functions were used to reflect the relationship among fatigue stress, number of stress cycles and environmental parameters. The fitting precision of the functions was relatively high.

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  • 能量吸收释放分界点对应轴向有效应力随着循环次数增大而增大

    Axial effective stress of demarcation points of energy absorption and release increases with the increase number of cycles.

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  • 能量吸收释放分界点对应轴向有效应力随着循环次数增大而增大

    Axial effective stress of demarcation points of energy absorption and release increases with the increase number of cycles.

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