stress ratio

Improvement of ultrasonic peening treatment on tubular joints under high stress ratio loading

承载超声冲击方法改善高应力比加载条件管接头疲劳性能

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The experiment and numerical analysis of biaxial thermal stress fatigue under various stress ratio.

研究了不同应力比的二线热应力疲劳试验并进行了数值分析。

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In the testing, stress ratio near threshold region was high and crack closure effect was removed.

此方法在测出ΔKth时应力比R已经很高，实际上已不存在裂纹闭合效应的影响。

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The effects of the stress ratio in the cyclic loading and the environment medium were studied.

同时研究了循环加载中的应力比以及环境介质对于疲劳裂纹扩展的影响.

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After one year in 5% MgCl 2 solution the threshold of stress ratio of beforehand loading for gas permeability is 0.2 lower than in the seawater.

经5%MgCl2溶液腐蚀1年后的试样，其气体渗透系数的预置应力比阈值较同条件下人工海水腐蚀的试样至少小0.2。

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Study on Loading/ Unloading Response Ratio Based on the Tectonic Stress Field

基于构造应力场资料的加卸载响应比方法研究

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There is a large concentrated reacting force on the top of the pile, and the stress ratio of pile and soil is remarkably influenced by the load. If the load is 120~ 380kPa, the stress ratio is about 10.

桩顶存在较大的集中反力，桩土应力分担比在不同荷重下有很大的变化，在上部荷重为120～380kPa时应力分担比在10左右。

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When compressive stress reaches zero, a critical value of the post-peak Poisson's ratio is achieved.

当压缩应力降至零时, 峰后泊松比达到临界值.

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Pile-soil stress ratio is an important parameter which affect the behavior of pile-net composite foundation, and it also is a target of calculating bearing capacity and displacement.

桩土应力比是反映桩~网复合地基工作状态的一个重要参数，也是计算桩~网复合地基承载力和沉降的重要指标；

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The pipeline steel with strain-based design is usually characterized by high initial work hardening rate, good ductility, and low yield stress to tensile strength ratio.

抗大变形管线钢就是基于应变设计的方法得到的具有连续屈服、较低的屈强比、较高的加工硬化指数以及均匀塑性变形延伸率等特性的管线钢。

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In addition, harnessing the result of stress ratio method, an ultimate embankment height can be computed, only if the ultimate bearing capacity of subsoil could be known by static load experiment or area ratio method.

另外通过面积比法的计算结果或复合地基静载试验成果可从应力比法计算公式中反算极限填土高度或极限桩土应力比，供初步设计参考。

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Did the pulling test in one dimension then obtained the tensile destructive load, stretch ratio, Lagrange stress, Cauchy strain of the above three kinds of cartilage.

以一维拉伸的方法得出了肩髋膝关节软骨的破坏载荷、伸长比、Lagrange应力、Cauchy应变等。

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The relation of displacement ductility factor μ?, axial load ratio n, shear-compression ratio v and average bond stress of the reinforcements are quantified on the basis of early research.

并在以往研究的基础上拟合出矩形截面柱中间层中节点梁筋贯穿段平均粘结应力与组合体位移延性系数μΔ、轴压比n和剪压比v的定量关系；

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When the stree strain relationship is the weak hardening, the relationship between stress ratio and strain incremental ratio shows the straight line with two different slopes.

当材料的应力应变关系为弱硬化型时，应力比与应变增量比关系为两段斜率不同的直线；

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Tensile modulus and yield stress of blends increase with concent ratio n of PMMA.

结果表明，共混物的拉伸模量、屈服应力随PMMA含量增加略有增大。

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The Study of the Diagnostic Value of Strain Rate Imaging ( SRI) Combined with Adenosine Stress for Coronary Artery Disease Load Factor The load factor is the ratio of the average load to the generator set power rating.

腺苷负荷心肌组织应变率显像对冠心病诊断的研究负荷系数负荷系数指的是机组的平均负荷与额定功率之间的比率。

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True stress and contraction ratio of the minimum section increases as flow tensile stress decreases.

随着流动拉应力的降低,颈缩区域中部的真应力持续增加.

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The stress ratio between pile and soil of the said pile and stress transmission property of pile are also discussed.

文中还研究了粉煤灰桩的桩土应力比及桩身应力传递特性。

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Based on experiment and calculated results, the simplified formula for stress of tensile steel under service load is derived, which is suitable to various kind of tensile steel ratio.

在试验和电算分析的基础上，提出了适用于各种配筋率情况的轻骨料混凝土梁使用荷载下受拉钢筋应力计算的简化公式。

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Critical dynamic stress ratio and dynamic strain analysis of soils around the tunnel under subway train loading

地铁列车荷载作用下隧道周围土体的临界动应力比和动应变分析

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FCGR will decrease with thicker sample and smaller stress ratio at the same testing condition.

在相同实验条件下，试样厚度越大、应力比越小，疲劳裂纹扩展速率越低。

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A relationship between the energy consumption due to particle breakage, angle of friction, dilatancy, and deviator stress ratio was derived.

对钙质砂的颗粒破碎机理进行分析，给出了关于破碎消耗能量、摩擦角、剪胀与偏应力比的关系式。

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Load tests deal with the bearing capacity of cushion course and pile-soil stress ratio, while indoor compression tests deal with influence of blend ratio of fly ash in pile material on pile strength.

通过室内抗压强度试验对构成CFG桩桩身材料的粉煤灰掺入量影响桩身强度的配比进行了研究；

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And the asymptotic stress ratio is a little larger for the specimens with vertical bedding plane than that with horizontal one.

相对于沉积面水平的试样而言，沉积面铅直的渐近状态应力比稍大；

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In this thesis, considering the random nature of the whole set of data, unified a-N incremental polynomial fitting method is proposed under the same test conditions to provide a scientific basis for the study of the influence of different stress ratio on the fatigue crack propagation.

本论文采用考虑整套数据的随机特性的a-N数据拟合方法，提出统一a-N递增多项式拟合法，为研究不同应力比R下的疲劳断裂可靠性提供科学的依据。

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