应变曲线

结果表明，拉伸应力应变曲线是非线性的，大部分拉伸曲线基本由三段折线组成，对应着三段模量。

Result shows that tensile stress-strain curve is not linear , most of them consist of 3 zigzags corresponding to different modulus .

数值模拟结果给出了混凝土拉伸应力-应变曲线和三点弯曲载荷-位移曲线，以及混凝土试件破坏过程最大应力分布图和裂纹扩展图。

It worked out the tensile stress-strain curve , the load-displacement diagram , the maximal stress distribution figures and the crack history figure during the deformation and failure process of the concrete specimen .

基于单元胞（unitcell）模型分析，计算了铁素体/珠光体钢的应力-应变曲线。

Flow stress curves of ferrite / pearlite steels were calculated based on unit cell model .

工业用PET纤维的模量-应变曲线

Modulus strain curves of poly ( ethylene terephthalate ) industrial yarns

PET及PA的模量&应变曲线都是明显的双峰曲线。

The modulus-strain curves of PET and PA have two peaks .

工业用及服用PET纤维的模量-应变曲线及其分析

Modulus-Strain Curves of Industrial and Apparel PET Filaments

Z较小时，发生不连续动态再结晶，但真应力真应变曲线未出现波动。

But the true stress-true strain curve does not accompany stress oscillation when discontinuous dynamic recrystallization occurs .

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 .

方形截面混凝土柱FRP约束下的轴向应力-应变曲线计算模型

A model for calculating the axial stress-strain curve of square-section concrete column confined by FRP

本文按三轴试验结果，采用对数曲线拟合应力应变曲线，用抛物线拟合弹性模量应力水平曲线，其相关系数R均在0.95以上。

According to triaxial test results , this paper adopts the logarithmic curve for the fitting of stress-strain relations , using parabola for the fitting of elastic . modulus-stress level relations .

电阻法监测CFRP复合材料的破坏行为比应力/应变曲线更敏感。

The electrical resistance measurement was more sensitive to the damage behaviors of the CFRP composites than the stress / time curve .

沥青混凝土具有弹塑性变形的特征，其应力应变曲线基本符合双曲线模型（DuncanChang）；

It has the characteristic of elastic deformation and its stress-strain curve basically meets hyperbola model ( Duncan-Chang ) and ;

测量了几种发射型PZT压电陶瓷的电场应变曲线和电滞回线，探讨了它们与性能间的关系。

The electric field-strain curve and the hysteresis loop of four kinds of unpo-led and poled transmitting type PZT ceramics have been obtained .

结果表明Gr／Al的应力应变曲线可分为两个部分：非线性弹脆性变形以及材料失稳后的残余变形。

The experimental results show that complete stress strain curves of the material can be divided into two parts : the elastical brittle deformation and residual deformation .

帘线材料根据实验得出的等效拉伸应力-应变曲线，采用rebar模型简化。

The cords material was simulated by rebar model , which determined by he equivalent stress and strain curves in tension .

利用CFRP圆管单向拉压本构模型数值计算上述试验试件的拉伸和受压应力-应变曲线，并与试验结果进行比较。

After that , the stress-strain curves of the specimens under tension and compression load are simulated by utilizing the constitutive model of CFRP tubes .

对软化型应力应变曲线提出用驼峰曲线模拟，对体变曲线也提出用能反映剪胀的驼峰曲线模拟，建立了Q1黄土的非线性弹性K、G模型。

In order to establish the nonlinear elastic model of Qi loess , the hump curve was used to stimulate both the softening stress-strain curve and the volume deformation curve .

通过对大量横穿简单剪切的韧性剪切带剪应变曲线数学特征的分析研究，提出剪切带剪应变函数γ（x）和扭距函数s（x）的数学表达式。

Based on the mathematical features of many shear strain curves across ductile shear zones , the expressions of the functions of shear strain γ( x ) and distortion distance s ( x ) were given .

并根据不同材料的金属薄板的大量拉伸应力应变曲线，论述测量E、μ、σ（0.2）的一些方法中存在的问题。

In this paper some problems about the methods to measure E 、μ、σ _ ( 0.2 ) will be discussed in terms of a lot of the tensile stress-strain curves of metallic thin sheets of various materials .

文章针对拉伸实验测试的高模低缩型PET工业丝和服用PET长丝的负荷-伸长曲线，进行计算转换得到纤维的模量-应变曲线。

The Stress-Strain Curves of high modulus low shrinkage PET industrial yarns and PET apparel filaments were measured by tensile test . The corresponding modulus-strain curves were obtained from the stress-strain curves of the fibers .

EPE静态压缩应力-应变曲线模拟

Simulation of Strain-strain Curve for EPE Static Compression

从试件各阶段的强度指标值和应力-应变曲线比较模拟值与试验值。结果表明，ANSYS的模拟计算结果与试验结果吻合度较好。

Compared to the test results of strength index values at various stages and the stress - strain curves , ANSYS simulation results shown that it matched with the test results well . ( 3 ) .

讨论了分离式Hopkinson压杆装置间接测量混凝土材料动态应力-应变曲线存在的问题。

The problems of Split Hopkinson Pressure Bar ( SHPB ) technique used for measuring dynamic stress strain curve of concrete were discussed .

试验得到了混凝土纵向及环向应力&应变曲线，GFRP纵向应变和环向应变沿纵向的分布及泊松比曲线。

The experimental results include longitudinal and hoop stress-strain curves of concrete , the distribution of longitudinal and hoop strain in axial direction and Poisson 's ratio .

而HOY（高取向丝）的应力一应变曲线与POY相似，存在明显的细颈拉伸现象。

While the stress - strain curve of HOY was similar with that of POY , both have mini - neck drawn phenomenon .

普通PPTA纤维和改性PPTA纤维具有近似的应力应变曲线，但后者的弯曲疲劳寿命比前者要长的多。

As-received PPTA fibers ( fiber A ) and modified PPTA fibers ( fiber B ) are found to have similar tensile stress-strain behavior .

当辐照时间达144h后，由于HDPE热稳定性明显变差，共混物韧性突降，拉伸应力－应变曲线上未出现屈服点。

As irradiation time over 144 hours , the toughness of the blends , however , drops abruptly because of serious irradiation damage of HDPE .

介绍了用SHPB装置获得聚碳酸酯冲击压缩应力应变曲线的实验研究，并采用二波法获得了PC材料的应力应变曲线。

This paper introduces the experimental study using SHPB apparatus for acquiring polycarbonate ′ s stress-strain curve under compressive impact loading . The stress-strain curve was obtained from incident wave and reflected wave under impact loading .

通过对Q2和Q3黄土的单轴压缩和常规三轴试验研究，对两种黄土单轴压缩曲线和CU剪切的应力应变曲线特征进行分析比较，探讨了两种黄土应力应变本构模型。

On the basis of the uniaxial compressive test and routine triaxial test results of Q_2 and Q_3 loess , the features of strain-stress curves of Q_2 and Q_3 loess are compared .

初步探讨了以3D习Sic在拉伸过程中的电阻变化，电阻变化曲线与应力应变曲线趋势大致吻合，表明可用材料的电阻变化作为损伤变量来表征材料的损伤。

Electrical resistance variance of 3D-C / SiC in tensile process was simply studied and found electrical resistance vary curves have the same changing tendency with stress-strain curves and the result show that the electrical resistance variance can be used to characterize the material damage .