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应变关系
    Based on analyzing the influence of stress strain relations and J integral conservation under biaxial stresses,it could be concluded that the stress strain relation curve in using increment theory elastic plastic finite element method was the important reason influencing on J integral conservation.
    分析了双向应力下应力应变关系对J积分守恒性的影响 ,结果表明 :增量理论弹塑性有限元的应力应变关系曲线是影响J积分守恒性的重要原因 .
    STRESS STRAIN RELATIONS FOR CONCRETE UNDER CYCLIC LOADING AFTER HIGH TEMPERATURE UP TO 800℃
    高温后混凝土在重复荷载作用下的应力-应变关系
    Methods of calculation pressure-volume strain relations with fractal geometry
    钢纤维混凝土压力与体积应变关系的分形计算方法
    The simplest solution which considers strainhardening of material is used to calculate the stress distribution of the cylinders and internal pressure-external strain relations during loading.
    用考虑材料应变硬化的最简单解法计算加压过程中圆筒的应力分布及内压-外表面应变关系
    In this paper, the incremental stress-incremental strain relations of the Jones- Nelson-Morgan nonlinear composite materials model have been developed. The in- cremental formulas are used to analyze stress in the structure made of the nonlinear multimodulus materials und er the nonproportional loading.
    本文给出了Jones-Nelson-Morgan非线性复合材料模型的增量形式的应力应变 关系.应用此应力应变关系可以求解与加载历史有关的非线性模量复合材科的结构应 力分析问题。
    This paper introduces an analysis method of three—dimensional nonlinear finite element of reinforced concrete structures which is under complex stress conditions. The analysis considers the concrete materials' nonlinear stress—strain relations, tensile cracking, compression crushing and strain—softening ect. .
    介绍了复杂受力钢筋混凝土结构三维材料非线性有限元分析方法,分析中考虑了混凝土材料的非线性应力—应变关系,拉环、压坏和应变软化等性能,同时对承受重复荷载作用时的材料性能作了描述。
    The calculated results show that the model considering both elasto plastic and anisotropic characteristics in determining soil stress strain relations agrees quite closely with the actual state.
    计算结果表明,在确定土体应力—应变关系时,不仅应该考虑土的弹塑性,还应该考虑到土的各向异性,这样才能符合土的实际情况。
    At first,this paper decides the stress strain relations of steel and core concrete of concrete filled square steel tubes. In the core concrete's stress strain relations,the interaction of steel tube and core concrete is considered.
    确定了高温下组成方钢管混凝土的钢材和核心混凝土的应力 -应变关系模型 ,在核心混凝土的应力 -应变关系模型中考虑了钢材和核心混凝土相互作用的约束效应。
    Different from existent methods,probability based modified Ramberg Osgood stress strain relations (P ε σ curves) are newly introduced to take into account the scatter of stress strain responses,where the metallurgical quality of material is not enough good i.e.weld metal to show a same stress strain response for different specimens under same loading level.
    其中 ,考虑了应力 应变行为的随机性 ,建议了基于概率的修正Ramberg Osgood应力 应变关系 ,以适于冶金质量不好或难以控制如焊缝金属类材料的可靠性分析 ;
    According to the practical stress and strain relations of concrete,the ultimate loads of circular section and rectangle section members under eccentric loads are calculated with nonlinear analysis method. A theoretical calculation method for a convert coefficient of the ultimate load by the influence of eccentric load is established.
    根据混凝土材料的非线性的应力 -应变关系 ,采用非线性分析计算的方法 ,对矩形、圆形截面的混凝土偏心受压构件的极限承载力做了理论分析与计算 ,建立了荷载偏心对构件承载力影响折减系数的计算方法。
    An attempt to predict the stress strain relations of the core concrete after sustaining axially compressive load by means of a model that is proposed in this paper. The load deformation behavior of the FRP confined concrete columns was computed,and the influence of the changing load ratio,slenderness ratio,FRP ratio and strength of the materials on the bearing capacity of the members after creep was discussed.
    然后提出考虑徐变影响后的FRP约束混凝土在轴心受压时的应力 -应变关系模型 ,在此基础上 ,利用数值方法计算出FRP约束混凝土轴心受压构件考虑徐变影响的荷载 -变形关系全过程曲线 ,并分析了轴压比、长细比、含FRP率、FRP强度和混凝土强度等不同参数情况下徐变对FRP约束混凝土柱承载力的影响
    By solving these two equations numerically, meso stresses are obtained and meso elastoplastic constitutive relations of a two particle linkage are deduced. Then the macro stress and strain relations are obtained by use of the average method.
    数值求解这两个方程 ,可得到一对颗粒间基体中细观应力的分布形式 ,从而建立颗粒对的细观弹塑性本构 ,采用平均化方法 ,进一步推导出材料宏观的应力 -应变关系
    The information on stress strain relations is contained in the test data, so it is possible to abstract the constitutive law directly from that. The neural network is a powerful inversion approach, by means of which the nonlinear and elastoplastic neural network models for sand and cohesive soil are built.
    在试验数据中蕴藏着应力应变关系的信息 ,直接提炼本构规律是可能的 . 神经网络是强有力的反演工具 ,借助于它建立了砂土和粘性土的非线性和弹塑性神经网络模型 .
    The variational principle of least work consumption principle attaches no restrictions to the stress、strain relations.
    最小功耗原理的变分原理未对材料的应力、应变关系附加任何限制.
    FEM of least work consumption principle can solve structure analysis problem with different the stress、strain relations. The solving range is broaden,and then this method unifies elastic、plastic and rheological problems.
    最小功耗原理的有限元法可求解不同应力、应变关系的结构分析问题,求解范围扩大,从而将弹性、塑性及流变理论问题统一起来.
    The stress versus strain relations and the Poisson's ratios under tension of 4 double-walled carbon nanotubes (DWCNTs) with diameters greater than 1 nm were numerically studied with the molecular dynamics method.
    利用分子动力学方法,对双壁碳纳米管在拉伸条件下的弹性性能进行模拟,研究了直径在1nm以上的4根双壁碳纳米管,模拟了它们的应力-应变关系以及泊松比.
    The present paper dealt with pressure-volume strain relations of SFRC(steel fiber reinforce concrete) materials under compaction. Fractal interpolation functions were used to calculate the data and then the iterated function system(IFS) of SFRC materials were presented.
    为研究钢纤维混凝土在压力作用下与体积应变之间的关系,采用分形理论中的分形插值方法,对压力—应变关系进行了计算,导出了压力与体积应变关系曲线的迭代函数系统IFS(iterated function system)。
    Based on digital speckle correlation method(DSCM),a novel video control experimental technique was developed for assessing tensile experiments. A series of tensile experiments on SnAgCu solder alloy was conducted under various constant true strain rates ranging from 10~(-5) to 10~(-3) s~(-1) and at 25℃ to 150℃. And the true stress-true strain relations and void damage evaluation law were achieved.
    开发新的基于数字散斑相关方法(DSCM)的摄像机控制拉伸实验方法,在温度25-150°C和应变率10-5-10-3s-1范围内进行一系列的恒应变率拉伸实验,得到真应力-真应变关系和空洞演化规律.
 

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