进一步针对轴对称问题，引入等效应变和等效应力。
The effective strain and effective stress are introduced under the condition of axial symmetry.
同时得出，孔洞的闭合需要足够大的等效应变和剪应变。
It was pointed out that enough effective strain and principal shearing strain were necessary for the void closing.
提出了一种新的用于各向同性损伤模型的四参数等效应变。
A new four-parameter equivalent strain for isotropy damage model is presented.
研究了坯料尺寸对等径角挤压材料等效应变及单位挤压力的影响。
The effect of billet size on the effective strain and unit extrusion pressure was investigated during equal channel angular pressing.
针对管路连接件等轴对称形式的构件，引入等效应力和等效应变。
Furthermore, effective strain and effective stress are introduced into the study of pipeline connection assemblies under the condition of axial symmetry.
等效应变沿轧制方向逐渐增大，在轧件出口处达到最大值0.253；
The equivalent strain increases gradually along the direction of rolling and reaches the maximum value of 0.253 at outlet of work piece;
定量分析了整个轧制过程环件内的温度、等效应变、双向轧制力的分布和演化情况。
Distribution of temperature, equivalent plastic strain and radial and axial rolling force have been quantitatively analyzed in the whole process.
试样端面沿径向的等效应变和显微硬度不同，心部最小，边缘处次之，中间区域最大。
The strain-effective and microhardness of different regions in the specimen are different, the center region is smallest, the corner region is bigger, the middle region is biggest.
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.
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.
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.
在该模型中，等效应变、等效应变速率和变形温度是模型的输入向量，输出向量是材料的流动应力。
True strain, strain rates and temperatures were input parameters of the model, while flow stress was the only output parameter.
结果表明，在轴对称变形过程中，随着等效应变的增加，多晶织构显现出明显的横观各向同性及纵向各向异性。
According to the results, during of the axisymmetry deformation, longitudinal anisotropy and transversal isotropy of polycrystal were obvious with the effective strain increasing.
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;
平砧锻造是塑性大变形问题，本文采用随动坐标系跟踪流动质点，利用能量法分步计算质点位移增量、等效应变场等，然后叠加。
To improve the accuracy of large floating point number calculatation, an iterative approach of inverse transformation for Gauss projection with floating coordinate system is presented.
利用应变等效性假设，推导了地壳体的应力-损伤耦合效应与地表重力变化之间的理论关系。
On the strength equivalent hypothesis, the theory relation between stress-damage coupling effect and variation of crustal gravity field.
对挤压变形过程中金属的应力和应变速率的变化情况进行了对比，发现金属变形时塑性变形较大的位置，对应的等效应力也较大。
Comparing the change of stress and strain rate distribution in the extrusion process finds that where plastic deformation is large, the corresponding equivalent stress is large too.
用不同的简单应力状态下的应力-应变试验曲线，可以得到不同的广义等效应力-应变关系。
Using experimental stress-strain curves in various simple stress states, generalized effective stress-strain formulae may be derived correspondingly in various forms.
通过比较等效应力应变值及速度曲线，得出了最佳的浇口方案。
The optimal gate project have been found out by comparing the equivalent stress, strain and the graph of speed.
通过比较等效应力应变值及速度曲线，得出了最佳的浇口方案。
The optimal gate project have been found out by comparing the equivalent stress, strain and the graph of speed.
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