查询词典 strain hardening

Based on the test results of sand, mechanics of internal parameters (plastic volumetric strain and plastic deviator strain) depending on stress path is explained. General equation expressing hardening parameter independent of stress path is proposed.

在分析砂土试验结果的基础上，揭示了基本硬化内参量(塑性体积应变、塑性剪应变)变化的应力路径相关性，提出了应力路径无关硬化参量的一般表达式。

And the relations of hardening exponent and hardening rate with strain were analyzed.

分析了合金的硬化率和硬化指数与应变的关系。

The hardening of the steel mayrelate to the shape of strain path under nonproportional cyclic straining. Experimental resultsshow that there exists a coupling between the hardening/softening induced by strainamplitude and that by the strain path.

在非比例循环加载条件下，材料的强化与路径形状密切相关实验表明，应变的幅值和路径方向的变化所造成的强化间存在耦合。

Maximum shear stress may be transfered into maximum shear strain by simple cyclic constitutive relation for low-cycle fatigue of controlling strain. Manson-Coffin type equation is derived by considering effect of nonproportional additional hardening.

对于应变控制的低周疲劳，最大剪应力参量通过简单的循环本构关系转换为最大剪应变参量，由此导出了Manson—Coffin型的公式，考虑了非比例循环附加强化对低周疲劳寿命的影响。

A constitutive model was developed on the base of Ohno–Wang kinematic hardening model Int. J. Plast. 9 (1993 375, 391. In the developed model, the rate dependence of the material was reflected by a viscous term; the steady cyclic flow was reflected by the evolution of kinematic hardening rules with critical state of dynamic recovery developed by Ohno and Wang Int. J. Plast. 9 (1993 375, 391; the cyclic hardening was only characterized by the evolution of isotropic hardening and an evolution rule of isotropic hardening with a term of dynamic recovery was used; the effect of loading history on the ratcheting was also considered by introducing a fading memorization function for maximum plastic strain amplitude into the model.

基于Ohno-Wang模型建立了一个新的、考虑材料的率相关特性的本构模型，模型中通过具有临界面的随动硬化律来反映稳态的循环流动，并通过带动态恢复项的各向同性硬化演化率来反映循环硬化的影响以及采用最大塑性应变幅值的衰减记忆函数来反映棘轮行为的加载历史记忆效应。

As one of key problems urgent to be resolved in the fields of mechanics, material science and sheet metal forming, constructing reasonable yield criterion, work-hardening law and stress-strain relationship is very important for predicting distribution of stress and strain in sheet metal forming, as well as for improving FEA simulation precision and resolving engineering problems.

各向异性板料的屈服准则、塑性变形强化规律以及应力应变关系的合理建立，对于准确预测板料成形过程中应力应变分布，提高板料成形有限元模拟精度，以及精确解析板料成形工程问题等方面具有重要的意义，这一基础性的研究一直是力学界、材料界、板料成形领域致力研究的关键问题。

The flow stress of the material changes with deformation, so called strain hardening or workhardening behavior and may be influenced by the rate of deformation.

材料的流量应力变化伴随着材料变形，这就是应变硬化或加工硬化特性而且会收到变形率的影响。

The results show that the flow stress of both materials decreases with increase of temperature, and strain hardening rates at a temperature below 585 K are greater than that at the temperature above 585 K.

测试结果表明，不论是上引法连铸多晶铜还是连铸单晶铜，流动应力随温度的升高而下降，在温度低于585 K时，材料的应变硬化率明显大于在温度高于585 K时的应变硬化率。

Meanwhile, some interesting characteristics about the temperature rate, strain and strain rate hardening and temperature softening are also shown in the thesis.

另外，在性能实验中也展示了一些新的现象，如预先温升率与材料流动应力间的相关性、温度350℃附近材料表现出的异常应变率敏感性及特殊的温度软化规律、有趣的应变率历史、温度历史相关性等。

This paper has studied the changes about tensile strain hardening exponent in three kinds of ST steel s by testing n-values and found changing tendency of them.

进行三种ST钢的应变硬化指数n值试验，分析试验结果，研究n值在整个应变区间的变化趋势。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了