当等效应变速率较大时,变形热效应对流动应力的影响相当显著,压缩过程基本上成为绝热过程。
While the equivalent strain rate is high, this influence is of importance and the compression process can be approximately considered as an adiabatic process.
采用平面应变有限元方法研究了晶须转动对晶须增强铝基复合材料热压缩变形行为的影响。
The effect of the whisker rotation on the hot compressive deformation behavior of the whisker reinforced aluminum matrix composite is investigated by the plane strain finite element method.
讨论了焊缝是否存在压缩塑性变形问题和拉达伊d应力应变原理图存在的问题。
In this paper, the problems on compressive plastic deformation in the weld and the principle of welding stress and strain described by d.
利用可考虑局部破坏的非线性弹塑性有限元,对无加筋和加筋砂土的平面应变压缩试验结果进行了从小变形到破坏的全过程数值解析。
Numerical analyses of plane strain compression tests for the geogrid-reinforced sand specimens were conducted by the nonlinear elastoplastic FEM considering strain localization.
提出了单轴压缩的岩样在受到剪切破坏条件下的全部变形特征,即轴向、侧向、环向、体积应变及峰后泊松比的解析式。
Analytical solutions of axial, lateral, circumferential and volumetric strains, and post-peak Poisson's ratio of rock specimen subjected to shear failure in uniaxial compression are proposed.
在等温恒应变速率压缩过程中,随着等效应变速率的增大,变形热效应对流动应力的影响程度增大。
During the isothermal constant strain rate compression process, the effect of deformation heating on flow stress increases with increasing equivalent strain rate.
采用刚塑性有限元法研究了多轴压缩过程中的坯料变形行为、等效应变大小、分布以及损伤值。
The billet deformation behavior, the magnitude and distribution of effective strain and damage value were investigated by rigid-plastic finite element method during multi-axial compressions.
该方案能实现对软材料的大变形、近似恒应变率及大应变率范围动态压缩测试。
It can achieve a large deformation, a large range of testing strain-rate and an approximately constant strain-rate dynamic compression testing.
结果表明:该合金的室温压缩变形过程表现为弹性和塑性变形,弹性应变很大,可达到2%。
We found: the samples experience elastic and plastic deformation processes before fracture, and the elastic strain is very large, it is about 2%.
本文对平面应变情况下不可压缩橡胶类材料裂纹尖端弹性场进行了有限变形分析。
This paper contains an asymptotic finite-deformation analysis about the elastostatic field near the crack-tip in an incompress rubber-like material.
正应力图形和剪应力图形可以分为三种类型,分别对应压缩类变形、平面应变以及拉伸类变形。
The figures can be divided into three main types, which refer to compression, plain strain, and tension, respectively.
采用真应力一真应变曲线和TEM研究其高温压缩变形中的流变应力行为和它的动态再结晶过程。
The dynamic recrystallization mechanism during hot compress was examined by the true stress-strain curves and TEM.
由有限变形理论推导出单向压缩和平面应变有限元模型。
The corresponding constitutive equations based on finite deformation theory are presented.
研究表明,6061铝合金热压缩塑性变形时的流变应力和应变速率之间的关系满足双曲正弦函数关系式;
The results show that relationship between flow stress and strain rate is applied to hyperbolic sine equation in the hot compressive deformation of 6061 aluminum alloy;
在含硼中碳钢的热压缩变形过程中,应变速率一定时,随着变形温度的升高,真应力下降;
The flow stress decreased as deformation temperature increased and became higher as strain rate rises.
他察觉到,比聚氨酯还软的聚合物,在静电吸引力的压缩下变形幅度更大,因此可以提供更大的机械应变。
He recognized that polymers softer than polyurethane would squash more under electrostatic attraction and thus would provide greater mechanical strains.
结果表明,热压缩变形试样心部的等效应变与应变速率比设定值大40%左右,而端面值则为设定值的1/5~1/4;
The results indicate that the efficient strain and strain rate are higher by about 40% than in the center of deformed samples, but are about 1/5~1/4 of set values at the end surface;
结果表明,热压缩变形试样心部的等效应变与应变速率比设定值大40%左右,而端面值则为设定值的1/5~1/4;
The results indicate that the efficient strain and strain rate are higher by about 40% than in the center of deformed samples, but are about 1/5~1/4 of set values at the end surface;
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