屈服应力

研究结果表明初始屈服应力的大小高度依赖于截面直径、加载应变率、温度以及截面形状。

The result shows that the magnitude of the initial yield stress highly depends on the diameter , strain rate , temperature and cross-section shape applied .

当最软区相对厚度小于0.2或相对屈服应力大于0.9时，在最软区已无明显颈缩。

Apparent necking does not occur in the softest zone providing that its relative width is less than 0.2 or its relative yield stress is greater than 0.9 .

在平行和垂直轧制方向上钛板的屈服应力与R值的定量关系

Quantitative relation between yield stress and R-value along directions parallel and perpendicular to rolled Ti plate

LC4合金的显微组织与屈服应力

Study on Yield Stress of LC_4 Alloy in the Semi-solid State

结果术后第1～5天，痰屈服应力呈逐渐降低趋势，由11.3Pa降至4.7Pa，有显著性差异（P＝0.0001），第二天显著大于第2～4天。

Results Sputum yield stress was significantly decreased from day 1 ( 11 . 3 Pa ) to day 5 ( 4 . 7 Pa ) .

半固态LC4合金的屈服应力

Yield stress of LC_4 alloy in semi-solid state

根据两种不同的应力状态，推导了屈服应力与R值的关系，加深了对各向异性屈服准则的认识。

In the test , the relation of the yielding stress to R is derived , according to two kinds of stress states .

屈服应力定义对纯铝L2屈服规律的影响

Effect of definition of the yield stress on yield rule of pure aluminium L2

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。

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

在DSA温区内，出现屈服应力平台及加工硬化速率峰值。

A stress platform and a maximum work-hardening rate both occur within the temperature range of DSA .

V对Ni-Ti-Nb记忆合金临界屈服应力的影响

Effect of vanadium on critical yield stress of Ni-Ti-Nb shape memory alloys

全片层TiAl合金临界屈服应力及影响因素的细观研究

Researches of Yield Stress and Influential Parameters for PST Crystals of TiAl Based on Micromechanics

TiAl基合金微观变形及显微结构对屈服应力的影响

Micro deformation modes and effect of microstructure on yield stress of fully lamellae polycrystalline TiAl-base alloy

对于不同实验温度，Ni-Ti形状记忆合金的变形行为也不同，其相变屈服应力随着实验温度的增加而增加；

The phase yield limit increases with the test temperature increasing ;

MR材料具有屈服应力大、响应速度快、能耗低、显著的流变效应、对污染不敏感等特点，逐渐成为了新型阻尼器的首选材料。

Because there are high yield stress , high reflect speed rate , low energy consumption , small pollution effect , etc. , MR ( magnetorheological ) becomes first choice for damper material .

发现聚醚醚酮α峰位置、屈服应力、Tg到Tm间的储能模量随结晶度增大而增加；

The experiment results show that as the crystallinity increase , the sample 's yield stress , the position of α - transform peak and the storage modulus be-tween T_g and T_m increase ;

次要结局：两个测量过程下的Casson黏度、屈服应力。

Minor consequence : Casson viscosity and yield stress in two measuring process .

结果表明，（1）PS能提高未增韧PVC体系的冲击强度，但导致屈服应力下降；

The result showed ( 1 ) The impact strength of untoughened PVC could be improved by PS , but resulting in a decrease of tensile strength at break .

本文依据血液流变学理论，通过红细胞压积H与血液粘度的关系以及血液的屈服应力与红细胞压积H的函数关系阐述了促红细胞生成素（EPO）对运动员的严重危害。

According to hemorheology theory , this article through HCT and the blood viscosity and bloods to submit stress of function relation elaborated the EPO to serious bane of the athlete .

n，且n值小于1，凝胶的起始运动存在一个屈服应力τy，说明这种凝胶是一种假塑性宾汉流体。

~ n and the value of n is less than one . The gel must overcome yield stress τ _y before it begins to move . So the gel is a kind of pseudoplastic Bingham fluid .

流变学、光学显微镜和凝点测试研究表明MAC共聚物能显著降低原油的屈服应力，减小蜡晶尺寸，很好地改善原油的低温流动性，侧链越长，改性效果越好。

Rheology and optical microscopy measurement show MAC copolymers can improve the cold flow ability by reducing yield stress and crystals size . MAC with longer side chain showed better result .

同时结合Johnson提出的金属玻璃中剪切模量与屈服应力的关系，计算了金属玻璃的屈服应力，得到了理想的数据。

Combined with the relationship between shear modulus and yield stress proposed by Johnson , the yield stresses of some metallic glasses were calculated and are close to a desired data .

本文使用ODF数据预报了薄板的一些成型参数，如屈服应力σ（？）、屈服面、塑性应变比γ值和弹性模量E等。

This paper concerns application of ODF data to prediction of some formability parameters , such as yield stress , yield loci , γ - value and Young 's modulus , etc.

921A钢动态屈服应力的实验研究

The Experimental Study of Dynamic Yielding Stress on " 921 A " Steel

通过SEM图像分析表明，微观结构为絮凝结构的土粒间力（其宏观表现为结构屈服应力）小于外力时就发生破坏，而一旦进入团粒结构，土体的变形发展缓慢。

The analysis of Scanning Electronic Microscope shows that the failure happens when the inner particles force of flocculent structure is less than outside force , but the development of soil deformation with agglomerate structure is slowly .

用毛细管测定宾汉体的两个常数，即粘度系数K和屈服应力f时，方程是四次的，会有四组解答。

Whn a capillary viscometer is used to measure the two constants of a Bingham body , the coefficient of viscosity K and the yield stress f , a quartic equation , is obtained and there are four solutions .

葛根素注射液高、低剂量组均可明显降低急性血瘀大鼠的全血黏度，减小血液屈服应力（与模型组比较，P<0.01，P<0.05）；降低其血小板最大聚集率（P均<0.05）；

Both the high dose and the low dose of Puerarin Injection could reduce the viscosity of whole blood and plasma , blood yield stress and the maximum rate of platelet aggregation in the acute blood-stasis model rats ( P < 0.01 , P < 0.05 ) .

本文首先利用自行提出的球形纳米压痕实验，得到KDP晶体的屈服应力及应力-应变曲线；

In this paper the spherical nano-indentation experiment is proposed by ourselves and carried out to obtain the yield stress and stress-strain curve of crystal KDP .

屈服应力对温度及形变速率的依赖性可用Eyring理论来拟合。

The dependence of yield stress on the temperature and strain rate could be modelled by using Eyring Theory .

考虑到MR阻尼器的屈服应力可以在一定的范围内通过改变阻尼器的磁场强度连续变化，提出了基于最优控制理论的半主动实时控制策略。进行了基于MR阻尼器的海洋平台半主动控制技术研究。

Considering that the yielding stress of the MR liquid can be changed continuously by adjusting the magnetic intensity in a certain range , an optimal control theory based semi-active control strategy is proposed and the effectiveness of the MR damper on offshore platform is illustrated by simulation techniques .