该文利用分形几何的方法对挤压膨化大米的应力-应变曲线进行了定量分析。
In this paper, fractal geometry isu sed to quantitatively analyze the stress-strain curves of extruded rice.
应用上限元方法分析了可压缩材料平面应变挤压问题，并与致密材料进行了比较。
The extrusion of compressible material in plane strain is analysed in use of UBET and compared to fully dense material.
用流函数法确定了宽截面薄壁铝型材挤压变形动可容速度场、应变速率场及上限功率。
The flow function method is used to build the kinematically admissible velocity field, the strain rate field and the upper bound deformation power of wide section Aluminum shape extrusion.
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.
基于此建立了粉末冶金材料平面应变广义上限法，并以平面应变挤压为例说明了该方法的应用。
Furthermore, a generalized upper bound method for powder metallurgical material in plane strain was developed and its application was illustrated by analyzing the plane strain extrusion.
“奶油饼”结构是韧性挤压带的应变结构。
"Cream cake" texture is the characteristic strain texture of the ductile compressed zone.
前轮对处于脆性温度区间的焊缝金属施加一个横向挤压塑性应变，减小甚至抵消致裂的拉伸应变，防止了焊接热裂纹的产生。
The front impact roller causes transverse plastic compression strain in the weld which is in the brittle temperature range, which counteracts the tensile strain which leads to hot cracking.
并介绍了两种完全有别于传统的剧烈塑性变形制备超细晶和纳米晶金属材料的最新工艺，如大应变切削和大应变挤压切削。
Two novel technologies which are radically different from traditional SPD methods, such as large strain machining(LSM) and large strain extrusion machining(LSEM), were introduced.
纵向上，因上、下构造变形层抗应变能力的不同，在挤压应力作用下发生差异形变，产生纵向变异；
In vertical, differential deformation occurred under compressional stress because of different anti-strain capacities in tectonic deformation zones, which result in tectonic variation.
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.
用流函数法确定了实心薄壁铝型材挤压变形动可容速度场、应变速率场及上限功率。
The flow function method is used to define the kinematically admissible velocity field, the strain rate field and the upper bound deformation power of solid aluminum shape with thin wall extrusion.
简要介绍等通道转角挤压法(ECAE)的基本原理及通过该方法得到的有效应变量的主要影响因素。
The mechanism of Equal Channel Angular Extrusion (ECAE) is briefly introduced, the influential factors on effect strain obtained by severe plastic deformation are also presented.
研究了铸态和挤压态az91镁合金的室温应变疲劳行为。
The fatigue behavior of as-cast and as-extruded AZ91 magnesium alloys was investigated under total strain amplitude control mode.
他们形成是由于挤压，拉伸，绘画，工艺，铸造，连接，或其他应变诱导过程。
They form as a result of extrusion, stretching, drawing, molding, casting, joining, or other strain-inducing processes.
得到了连续挤压成形过程中任意步骤时的三维应力场分布、应变场分布、速度场分布情况。
Have gotten the 3d stress, strain and velocity distribution of arbitrary step in continuous extrusion course.
得到了连续挤压成形过程中任意步骤时的三维应力场分布、应变场分布、速度场分布情况。
Have gotten the 3d stress, strain and velocity distribution of arbitrary step in continuous extrusion course.
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