Definition and Mechanical Characteristics of True Stress - Strain
真 应 力-应变的定义及其力学特征
The mechanical behaviour of polycarbonate ( PC ) is studied in this paper by tensile experiments . A set of true stress & strain curves for different strain rates is obtained .
本文通过拉伸实验研究了国产聚碳酸酯板的力学行为，得到了这种材料在不同应变速率下的 真实 应 力&应变曲线。
The rotation of yield locus in true stress space is described via the rotational hardening law to embody the anisotropy .
引入旋转硬化规律，描述 屈服面随着加载过程在 应 力空间旋转，模拟土的各向异性。
In this method the true stress & true strain curves in equal temperature and equal strain rate can be obtained more exactly .
按照这套方法可得到更加准确的等温等应变速率 真 应 力真应变曲线。
The Measurements of the Tensile True Stress - Strain Curves for the Reactor Structural Metals
反应堆结构金属材料的拉伸 真 应 力&应变曲线测定
Computer Simulation on the True Strain-True Stress Curve of C-Mn Steel during Hot Deformation
C&Mn钢热变形流变曲线的计算机模拟
The dynamic restoration mechanisms during hot torsion were examined by the true stress true strain curves optical and electron microscopy .
采用 真 应 力－真应变曲线，偏振光金相和透射电子显微镜研究该合金热扭转过程的动态复原机制。
The compressive true stress - true strain curves were measured and hot deformation microstructures were observed .
测试了其 真应 力应变曲线，观察了变形后的显微组织。
In calculating power hardening function is used as the true stress - strain curve of materials .
计算时，板料的 真实 应 力-应变曲线拟合为幂强化函数型。
But temperature has little influence on the shape of curve between saturated ratchetting strain and peak true stress .
温度对饱和棘轮应变～峰值 真 应 力曲线的形状影响不大。
A new and simple method i. e. the graphical method for determining the true torsion stress is proposed .
提出了一种新而简单的 真实扭转 应 力测定方法，即图解法。
The results are shown as following : 1 . The true stress - true strain curves of 7150 and 7056 aluminum alloys both appear steady-state deformation features apparently .
主要内容如下：1.Al-Zn-Mg-Cu-Zr合金的 真 应 力&真应变曲线均出现明显的稳态变形特征。
Three dimension stress analysis Discussion on Properties of the Structural Variation of Unsaturated Loess under Condition of True Triaxial Stress
三维应力分析非饱和黄土在 真三维 应 力状态下的结构变化特性初探
The true stress - stain curve was measured .
测量了 真 应 力应变曲线。
Isothermal compression tests of physical simulation were carried out on a spray formed ultrahigh carbon steel ( UHCS ) by Gleeble 1500 system . True strain-true stress curves were obtained . The deformation activation energies at different temperature range and different strain rate were calculated .
采用Gleeble1500物理模拟试验机对喷射态超高碳钢（UHCS）进行了等温压缩物理模拟试验，测定了真 应 力- 真 应变曲线，计算了不同温度和应变速率条件下的变形激活能。
According to the true stress and strain curves the limitations of the material model are discussed .
根据 真实 的 应 力应变曲线讨论了橡胶材料模型的局限性。
Ultrahigh carbon steel ( UHCS-3.0Si ) was tested by isothermal compression physical simulation tests as spray-formed state and true stress vs. true strain curves were obtained .
对喷射态超高碳钢UHCS-3.0Si进行了等温压缩物理模拟试验，测定了 真 应 力-真应变曲线。
The rock deformation and failure tests are performed along various stress paths under true triaxial stress state .
在 真三轴 应 力状态下进行了各种应力途径的岩石变形和破坏实验。
Then the shift stresses were analyzed to specify the yield locus in true stress space and rotational hardening law was adopted to embody the anisotropy induced by stresses .
分析迁移应力，确定了 真实 应 力空间中的屈服函数，并采用旋转硬化规律考虑应力引起的土体各向异性。
Calculation Model and Experimental Verification on True Strain and True Stress in Hot Tensile Test
高温拉伸试验中 真 应 力真应变的计算及试验研究
Based on FEM results and analysis a simple method was suggested to obtain the true stress and strain curve of orthotropic material .
在此基础上，建议了一种确定正交各向异性韧性材料 真实 应 力-应变曲线的方法。
The calculation mold of true stress and true strain were built according to the data of load and displacement during hot deformation by matlab software . Moreover experimental values of section area were compared to those from calculation .
根据在拉伸过程中采集的瞬时载荷、瞬时位移数据，应用Matlab软件建立了其在热变形过程中的 真 应 力真应变计算模型，并把实际测量的截面面积与模型计算值进行了比较。
Study on a Calculation Model for True Stress and Strain of 304 Stainless Steel Strip Continuous Casting at High Temperature and in Hot Deformation
薄带连铸304不锈钢高温热变形时 真 应 力 真应变计算模型的研究
At low strain rate the true stress increases with true strain rapidly and enters a steady state after reached peak flow .
在较低变形速率条件下， 真 应 力随真应变迅速增加，到达峰值后便进入稳态变形阶段；在较高变形速率条件下，真 应 力到达峰值后，迅速下降，随之进入稳态变形阶段。
During deformation because of dynamic recovery and recrystallization a turning point appears on the curve of true stress with temperature and strain rate .
这个折点的出现 可能 与 变形过程中的动态回复与再结晶有关。
The relationship of true stress and true strain for the mid-strength weldable 1420 Aluminum-Lithium alloy has been investigated in this thesis by high temperature compression testing and high temperature tensile testing on different hot deformation conditions .
本文通过高温压缩和高温拉伸试验，研究了中强可焊1420铝锂合金热变形时不同变形条件下的 应 力-应变关系、变形条件 对合金流变 应 力的影响；
( c ) The true stress strain curves could conform to the parabolic law .
材料的 真实 应 力－应变曲线符合抛物线规律；
Nadai 's expression is applied to the determination of true torsion stress of a cylindrical test piece .
将纳达依表达式应用于圆柱形试样扭转试验时 真实扭转 应 力的测定。
Through the comparison of three torsion strength formulae of circular shafts the error function error curve and error maximum between those formulae and the formulae of true shear stress in torsion are presented .
通过对三个圆轴扭转强度计算公式的比较，给出了它们与 真实扭转 强度公式的误差函数和曲线及误差的最大值。
On the maximum classical stress intensity in condition of true plane stress with constant body force
常体力 真平面 应 力情况经典强度理论相当应力的最大点
真应力真实应力