The influence of stress amplitude on marble is much larger than that of frequency.
饱和大理岩具有显著的应力振幅效应和频率效应以及各向异性。
This limit is essentially a stress amplitude value over which higher stresses can not be transmitted.
应力波幅值高于该极限就不能通过。
The calculated results agree with experimental results in terms of stress amplitude impacted by machine stiffness.
就机械刚度对应力幅度的影响而言，计算结果与实验结果一致。
Fatigue life (Nf). The total number of stress cycles that will cause a fatigue failure at some specified stress amplitude.
疲劳寿命(Nf)：在某一指定应力幅值下，引起疲劳失效的应力循环总数。
When shifting both the mean stress and the dynamic stress amplitude, the influence on dynamic response is the most intensive.
平均应力和动载应力振幅同时改变时，对动态响应影响最大；
Under ultrasonic interval loading with air cooling, it all occurred at an internal inclusion in the whole stress amplitude level.
压缩空气冷却的间歇加载超声试样，在全应力幅范围均为夹杂物引起的内部破坏。
Through the study and analysis of this paper, it will offer the important basis for the method of fatigue design by hot spot stress amplitude.
通过本文的研究分析，基本掌握了三种节点的应力分布规律，将会对用热点应力幅建立疲劳计算方法提供依据。
It is shown by test results that at a given equivalent stress amplitude the constant amplitude fatigue life follows the lognormal distribution.
结果表明，在同一应力水平下，所用试样的常幅疲劳寿命服从对数正态分布。
Calculation of crane metal structure on fatigue life may be carried out according to either stress ratio or stress amplitude in related structure.
起重机钢结构的疲劳寿命计算，可采用应力比法或应力幅法。
When the stress amplitude is small, modulus of materials after pre-mechanical cycling increased with the stress amplitude, and down when it is higher.
经过预力学循环的材料在应力幅值较小时模量随其升高，而较高时降低，主要和内部位错密度上升有关。
The results showed that the critical strength was not only affected by rock's nature, but also was controlled by the stress level, especially stress amplitude.
试验结果表明，岩石的临界强度不仅受岩石固有性质影响，而且受控于应力水平，特别是应力振幅。
By using the nonlinear cumulative fatigue damage model considering the influence of the fatigue limit and the cyclic stress amplitude, the remaining life formula of the.
获得了用电阻变化测量疲劳损伤的公式，应用计及疲劳极限和循环应力幅影响的非线性累积疲劳损伤模型，给出了金属材料疲劳损伤的剩余寿命预测公式。
This paper describes the calculation method and process of stress amplitude and stress amplitude spectrum to evaluate the safety life time of steel structure for tower crane.
本文介绍了塔式起重机钢结构安全寿命评估中的应力幅及应力幅谱系数的计算方法和过程。
With the increase of the grain size of H68 brass, the critical plastic strain for the onset of serrations increases while the maximum stress amplitude of serrations decreases.
对于H68黄铜，随着晶粒尺寸的增大，出现锯齿屈服的临界应变量增大，锯齿波的最大应力振幅减小。
The loads and the distribution of stress amplitude frequency are obtained by cycle count and reliable data for fatigue design are provided by probability density function fit.
用循环计数法求出载荷及应力幅频率分布，用概率密度函数拟合，为疲劳设计提供可靠性高的数据资。
The fatigue life is seen to depend on the grain size and stress amplitude, based on the nonequilibrium statistical theory of fatigue fracture and the model of interface energy.
在其它参数保持不变的情况下，得出细晶粒多晶体金属的平均疲劳寿命随晶粒尺寸和应力振幅的增加而减小的结论。
In some cases, the continuous distribution model of fatigue failure life and stress amplitude level is more valuable in analyzing the damage of ponogena under complicated stress.
在某些情况下，如进行复杂应力条件下的疲劳素损伤分布分析，疲劳失效寿命和应力幅水平的连续分布模型更有意义。
Through the stress-controlled test the effect of the amplitude ratio, the average stress, stress amplitude and loading rate on the ratcheting strain and strain range are studied.
通过应力控制，研究了幅值比，平均应力，应力幅，加载率对棘轮应变以及棘轮应变幅的影响。
By shifting the mean stress and the sine wave stress amplitude, uniaxial cyclic experiments were performed to study the dynamic response of fluid-saturated sandstones and marbles.
在单轴循环加载实验中不断改变平均应力和正弦波应力振幅的实验条件下，研究饱和砂岩和大理岩的动态响应。
The seismic stress amplitude of the lower layer is larger than that of the upper layer under near-field ground motion, and under far-field ground motion the condition is opposite.
在近场地震动作用下双层隧道下层的地震应力幅值要比上层的地震应力幅值大，在远场地震动作用下则相反；
Experimental results show that the stress amplitude of the tensioned bar is decreased remarkably and the fatigue life is then obviously increased as compared to normal strengthening method.
试验结果表明，与非预应力碳纤维布加固梁相比，预应力碳纤维布加固后混凝土梁中受拉钢筋应力幅显著降低，混凝土梁疲劳寿命明显延长。
Based on the creep theory, the mechanical relationship of VSR and cyclic creep was discussed, and common factors such as stress amplitude, temperature and material properties were analyzed.
基于蠕变理论提出了振动时效与循环蠕变在力学本质上的相关性，并对交变应力幅、温度和材料特性等共同影响因素进行了分析。
One is called the S-N curve of surface fracture mode. It is governed by a crystal slip on the specimen surface, which occurs in the region of short fatigue life and high stress amplitude level.
一组叫做表面破坏模式的S-N曲线，它发生在高应力幅短寿命区，是由试样表面晶体滑移引起的。
Saturated marble is obviously effected by the amplitude and frequency of applied stress, and is also anisotropic. The influence of stress amplitude on marble is much larger than that of frequency.
饱和大理岩具有显著的应力振幅效应和频率效应以及各向异性。
The paper expounds a way to get stress amplitude spectrum of main girders of overhead traveling crane through computer simulation combining virtual prototype technology and computer random simulation.
本文将虚拟样机技术与计算机随机模拟方法结合，探讨了通过计算机仿真的方法获得桥式起重机主梁应力幅谱的基本途径。
The stress in ferromagnetic materials was studied by measuring the change of the amplitude of ultrasonic wave with electromagnetic acoustic transducers.
本文主要是对用电磁声换能器，通过测量超声波幅度变化来测量铁磁性材料内部应力的方法进行实验研究。
When the torsional vibration amplitude and stress exceed the limit, the rubber torsional vibration damper should be designed to reduce the amplitude within the permitted range.
当扭振振幅或扭振应力超过限值时，设计橡胶扭振减振器将振幅衰减到容许范围内，消减曲轴系统的扭转振动。
Saturated marble is obviously effected by the amplitude and frequency of applied stress, and is also anisotropic.
饱和大理岩具有显著的应力振幅效应和频率效应以及各向异性。
The amplitude and gradient of MMMT signals not only relied on the average stress of the shell, but also relied on the local stress concentration.
由此证明磁记忆信号的幅度和梯度既与材料所处的整体应力有关，也与该部位的局部应力集中度有关。
Smooth muscle is most sensitive to stress, and its total negative increase amplitude is great, so it's the important factor for arterial remodeling.
血管平滑肌对应力的反应最敏感，总负增长幅度较大，是影响动脉重建的主要因素。
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