• 结果表明流动应力温度应变变化相当敏感

    The results showed that the flow stress of tantalum was very sensitive to the changes of temperature and strain rate.

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  • 尤其对于大陆岩石圈地壳厚度年龄应变均可显著影响岩石圈的强度

    Particularly, for the continent, the crust thickness, thermal age and strain rate significantly had strong effect on the lithosphere strength.

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  • 发现纳米管压缩强度临界轴向内力低温下温度影响明显,并且应变的大小有关

    It was revealed that the compressive strength of nanotubes, such as the critical axial load, is related to applied strain rate and also affected by temperature especially by lower temperature.

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  • 锯齿形切屑产生原因第一变形区内软化超过应变应变率强化发生绝热剪切局部化

    The reason for the sawtooth chips is that the adiabatic shear localization occurs in the primary deformation zones when thermal softening exceeds strain and strain rate hardening.

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  • 目的:应用应变应变显像技术对正常人原发性高血压患者动脉顺应性特点进行研究。

    Objective: To assess the compliant properties of the Common Carotid Artery (CCA) in healthy subjects and patients with essential hypertension based on strain-strain rate imaging.

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  • 12个区域来测量收缩期圆周应变时间应变并用应不峰值时间应不标准差来表示心肌不同步。

    Time to peak systolic circumferential strain and strain rate were measured in 12 segments, and myocardial dyssynchrony was expressed as the SD of time to peak strain and strain rate.

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  • 这个曲线其他学者试验得到最大强度应变关系曲线变化趋势相吻合,说明公式正确性

    This curve and other scholars have made the biggest test compressive strength and strain-rate trends in the relationship between the curves match that this formula is correct.

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  • 应变下,断裂应变密度主要初始弹性模量应变共同决定,受温度效应和应变率效应的综合影响。

    The fracture strain energy density at the high strain rate is mainly determined by the initial elastic modulus and the unstable strain and affected by the temperature and the strain rate.

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  • 目的探讨室壁与入射超声之间夹角应变长度SL长轴方向应变成像SI应变成像(SRI影响

    Objective To study the influence of incidence angle of ultrasound and strain length(SL) on strain imaging(SI) and strain rate imaging(SRI) in long-axis direction.

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  • 塑性拘束较大缺口试样(i)整体屈服载荷及缺口应力应变应变塑性拘束较小V缺口试样(V)

    The general yield load, stress and strain rate ahead of notches of I specimens with larger plastic constraint is larger than that of V specimens with small plastic constraint.

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  • 基于混凝土损伤理论试验得到应力应变曲线基础分析了纤维含量和应变率材料强度材料力学行为的影响

    Based on damage theory, the stress-strain curve got from experiment is analyzed in order to study the effect of material strength and mechanical properties by fiber content.

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  • 稳定蠕变应变本构方程作用盐岩应力偏量的函数能量温度指数函数。

    The steady-state creep strain rate is a power function of deviatoric stress and exponential function of temperature and energy.

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  • 本文借助分子动力学模拟研究极高应变固体液体平面冲击导致的断裂

    MD simulations are carried out to study spallation in solid and liquid copper incuded by planar shock loading at exteme strain rates.

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  • 分析应变混凝土弹性模量、峰值应力时应变混凝土吸能能力的影响

    The relationships between strain rate and the elastic modulus, critical strain, Poisson's ratio and energy absorption capacity of concrete are still studied.

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  • 6063铝合金试样不同应力三轴度不同应变下进行拉伸试验,得到了该合金两种情况下的力学性能

    The specimens of 6063 aluminum alloy are tensioned under different stress triaxiality and different strain rates, the mechanical properties of 6063 aluminum alloy can be drawn.

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  • 本文重点针对传统SHPB实验技术试样早期应力不平衡实验难以达到应变加载这两大问题,建立了入射波整形技术。

    Because it is hard to obtain dynamic stress equilibrium and constant strain rate in soft materials specimen during the conventional SHPB experiments, a pulse shaping technique is developed.

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  • 稳定应变本构方程作用盐岩应力偏量的函数能量温度指数函数。

    The steady state creep strain rate is a power function of deviatoric stress and exponential function of temperature and energy.

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  • 最后中国地区利用GPS观测资料计算了地应变场,并计算方法结果进行分析讨论

    Finally, with Chinese Sichuan-Yunnan area as an example, the strain rate is calculated by GPS data and some discussions of computation methods and results are made.

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  • 应变岩石动态构关系力学特性,目前主要利用SHPB装置等来获得。

    Split Hopkinson Pressure Bar (SHPB) has been used to study the constitutive and mechanical properties of rocks under high strain rates.

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  • 本文也指出了由于应变敏感性所引起的内耗增量过应力的类比性。

    The analogy between internal friction increment and overstress due to strain-rate sensitivity is clarified.

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  • 应变敏感系数宏观塑性动力学位错动力学一个基本概念,本文试图进行了重新解释。

    An attempt is made to elaborate the definition of the coefficient of strain-rate sensitivity, which is a fundamental concept for macroscopic dynamic plasticity and dislocation dynamics.

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  • 模型全面考虑了压力应力第三不变量变形硬化软化应变强化以及拉伸损伤各个影响因素。

    The main factors such as pressure, the third invariant of stress tensor, strain hardening and softening, stain rate and tensile damage have been taken into account in the constitutive model.

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  • 研究了AZ 91d镁合金应变诱发熔化激活处理过程形变形变温度组织影响

    The influences of strain and temperature on microstructure of AZ91D alloy for upsetting in the strain-induced melt activation process were investigated.

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  • 揭示了半固态金属成形过程应变变形液相偏析影响规律。

    The effects of strain rate and engineering strain on liquid phase segregation in the process of semi-solid metal forming have been revealed in this paper.

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  • SHPB实验中,通过采用整形技术实现实验过程中的应力平衡应变加载

    A pulse shaping technique has been used in split Hopkinson bar (SHPB) experiment, for ensuring the specimen in dynamic stress equilibrium and loaded under constant strain rate during the test.

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  • 分析温度应力(应变)应变等因素极化曲线影响讨论温度、应力应变率对管道钢发生应力腐蚀开裂的驱动作用。

    Effects of temperatures, stresses and slow strain rates on the polarization curves and the contributions of these factors to stress corrosion cracking (SCC) were also analyzed.

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  • 比较应变负反馈应变反馈控制控制效果

    And the effects under the control laws of negative strain rate feedback and positive strain feedback are compared.

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  • 作为实例我们定量分析了扩张收缩中的应变分布。

    As a practical application, the strain rate analyses of flow in a diverging vessel and a converging vessel have been made at the end of this paper.

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  • 孔尺寸不仅影响材料屈服强度塑性量等,影响着材料应变率敏感性

    Cell-size has a significant effect not only on the crushing stress and plastic modulus of aluminum foam, but also on the strain-rate sensitivity of material of this kind.

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  • 模型得到了利用纤维冲击拉伸试验确定单丝应变率相关统计方程力学参量的原理方法

    The method to determine the mechanical parameters in the constitutive equations of the rate-sensitive fiber by the tensile impact test of the fiber bundle are proposed from such models.

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