结构动态响应作为弹塑性动力学的重要研究领域,正越来越受到人们的重视。
As an important research field, the dynamic response of structures is getting increasing interests.
应变率敏感系数是宏观塑性动力学和位错动力学的一个基本概念,本文试图对其进行了重新解释。
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.
通过对结构塑性动力学响应和叶片变形过程的分析,指出了叶片断裂时的不同转速对撞击过程及结果的影响。
Effects of rotation speed on the impact process and results are pointed out by the analysis of structural plastic dynamic response and blade deformation.
据此,从结构和内压角度,应用塑性动力学的数值方法和材料的破坏判据分析了引起接头脱落失效的几种因素。
On the basis stated above, a numerical method of plastic dynamics and material failure judgment are used to analyze the causes of joint failure from the aspects of structure and internal pressure.
根据结构塑性动力学原理进行响应分析和叶片变形过程分析,并对影响叶片卷曲形状的飞断转速、抗弯刚度等参数进行了考察。
Base on the structure plastic dynamic response analysis and blade deformation process analysis, the factors such as length of blade, rotate speed of breaking were considered.
采用显式动力学弹塑性有限元方法,对平板轧制过程中咬入阶段的非稳定变形进行了数值模拟。
With the dynamic explicit elastic plastic finite element method, the unsteady deformation of the bite stage in slab rolling was simulated.
本文讨论了塑性流动理论中的理想刚塑性材料的动力学问题。
We discuss the dynamics problems of ideal rigid-plastic material in the flow theory of plasticity in this paper.
运用材料的粘塑性本构方程建立了新的切削动力学模型及其传递函数,并给出了材料粘性系数表达式。
A new cutting dynamic model and its transfer function as well as the formula of the viscous coefficient are established in the overstress constitutive equation.
概述了岩石超塑性变形机制、显微构造特征、影响因素及其动力学意义。
This paper mainly reviews deformation mechanism of superplasticity, microstructural aspects and its dynamic implications.
研究了应力对45钢珠光体相变动力学及相变塑性的影响。
The influence of applied stress on the transformation kinetics and transformation plasticity during pearlite transformation of 45 steel has been studied.
运用多刚体系统动力学及接触冲击理论建立了节理岩体弹塑性动态本构模型。
In this paper, a elastic-plastic dynamical constitutive model on jointed rock masses under blasting load is established with the help of the multiple rigid-body dynamics and contact-impact theory.
基于动力学和弹塑性力学理论,采用轴对称有限单元法系统地分析了软土地基上半刚性基层沥青混凝土路面结构体的工作性状。
On the basis of the theory of dynamic mechanics and elastic-plasticity mechanics, the asphalt pavement of semi-rigid subbase on the soft clay ground is analyzed using the axisymmetric FEM.
其次,从位错动力学角度建议了一个塑性松弛函数以便描述高温、高压下塑性流动的特性。
Secondly, a plastic relaxation function describing the behaviour of plastic flow under high temperature and high pressure is suggested from the viewpoint of dislocation dynamics.
从分子机制上阐明蛋白质-蛋白质相互作用是了解细胞动力学和可塑性的基础。
Molecular elucidation of protein-protein interaction is essential for understanding the cellular dynamics and plasticity.
获得了作用在恢复弹簧上的冲击激励,为弹簧的动塑性分析提供了运动边界条件,掌握了弹射系统的动力学特性。
Thus, the impact excitation acting on the restoring spring is obtained, and the dynamic characteristic of the ejection system is acquired.
证明了泛函j的一次变分为零相当于满足刚塑性体动力学的全部方程。
It is proved that the vanishing of the first variation of the functional J is equivalent to all the equations which should be satisfied in the dynamics of rigid-plastic continua.
研究了奥氏体相塑性变形和保温温度对相变动力学以及铁素体晶粒尺寸的影响。
In this study, the effects of plasticdeformation of the austenite phase and the holding temperature on thetransformation kinetics and the ferrite grain size are investigated.
通过与传统的黏塑性和改进的黏塑性模型结果的对比分析,进一步验证了黏弹塑性模型在中小尺度海冰动力学模拟中的可靠性。
The new constitutive model is further applied to simulating ice dynamics of the Bohai Sea and compared with the traditional VP, and modified VP models.
通过实验方法和分子动力学模拟方法研究了91%(质量分数,下同)细化颗粒钨合金材料的塑性力学问题。
Abstract :Based on the combination of experiments and numerical simulations, the plastic properties of a 91%(mass fraction, the same below) refined particle tungsten alloy were investigated.
模拟结果证实了应用显式动力学弹塑性有限元法模拟双金属复合板轧制的可行性,且计算所得轧制力与实验结果吻合较好。
The specific rolling force distribution was obtained by simulation and the calculated results of rolling force are in good agreement with the measured ones.
岩石圈下层的网状塑性流动,作为包含塑性流动网络的黏塑性流动,控制着大陆板块内部的构造变形和动力学过程。
Netlike plastic flow in the lower lithosphere, as viscoplastic flow involving plastic flow network, controls tectonic deformation and dynamic processes within the continental plate.
岩石圈下层的网状塑性流动,作为包含塑性流动网络的黏塑性流动,控制着大陆板块内部的构造变形和动力学过程。
Netlike plastic flow in the lower lithosphere, as viscoplastic flow involving plastic flow network, controls tectonic deformation and dynamic processes within the continental plate.
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