体积应变

In order to improve the high-performance concrete quality of longer brittleness, lower tensile strength, particularly the less descending branch in stress-strain curve compared with that of ordinary concrete. The breakthrough of this thesis lies in the mixture of short carbon fiber. Four factors such as water-binder ratio, volume ratio of short carbon fiber and blending value of high efficiency water-reducing admixture were selected as variable. Experiment was carried out by utilizing uniform design. Regression equation was established by regression analysis of the compression strength and the split tensile strength separately utilizing SPSS software. The process of optimization was obtained with the aid of MATLAB. Finally the optimized ratio was acquired.

为了改善高强混凝土由於水泥自缩、湿涨造成的脆性大、抗拉强度低，特别是应力－应变曲线的下降段不及普通混凝土的特点，本文以掺入短碳纤维为突破口，选取水胶比、砂率、短碳纤维的体积比、高效减水剂掺量四个因素作为变量，利用均匀设计安排试验，用SPSS软件对抗压强度和劈拉强度分别进行回归分析而得到回归方程，用MATLAB进行优化处理，进而求出最优配比。

Using the continuity conditions of displacement and radial stress, a closed-form solution of the plain strain bulk modulus of concrete was derived.

利用位移和径向应力的连续性条件，导出了混凝土平面应变体积模量的闭合解。

In the test, after anisotropic consolidation, keeping the deviator stress, pore water is injected using pore water control apparatus under a constant volumetric strain controlled condition.

该实验是在各项异性的固结作用后保持差应力，使用孔隙水控制装置在体积不变的应变控制条件下将孔隙水注入。

A continuous strain hardening-softening model of dilatant sand named "SHSOVOD", and FLACish language of FLAC3D software were put together to perform the numerical analyses. The results of matrix-arranged anchors placed in different horizontal spacing are compared with the results of single anchors.

数值分析乃利用砂土之连续应变硬化-软化与体积膨胀模式，简称SHSOVOD模式，配合FLAC3D语言FLACish进行群锚受力行为分析，同时比对群锚在不同水平间距下的分析结果与单锚之受力行为，以了解砂土中垂直扩座地锚锚碇力受水平间距之影响。

This system can use all the extended memory configured in the computer, and therefore, it is especially suitable for the simulation of large-scale plastic deformation problems.

本软件能够实现对轴对称及平面应变体积成形过程的正向模拟、热力耦合分析及简单的反向模拟，效果很好。

And the strain and curvature of the volume element geometrical mid?

同时假设代表性体积单元具有均匀的中面应变和曲率。

The strain and curvature of the volume element geometrical mid-plane is assumed to be uniform.

同时假设代表性体积单元具有均匀的中面应变和曲率。

By using the conformal mapping technique and the Laurent series expansion, a group of equations to predict effective bulk modulus and transverse shear modulus of multiphase fiber composites was obtained.

通过解析函数的保角变换与罗朗级数展开，获得了相应问题的解。根据复合材料平均应力与应变关系，获得了混杂纤维复合材料横向剪切模量和体积模量的预测公式。

According to the stress-strain complete process curve, the total volumetric strains and crack induced 1 volumetric strains is adopted as damage parameters for analyzing the five phases during the crack growth (crack closure , linear elastic, stable crack growth, unstable crack growth and post failure).

通过压缩试验获得的脆性岩石的全应力应变曲线，利用体积变量和裂纹体积变量等损伤变量分析得出裂纹发展的五个阶段即：压密、弹性、微裂纹稳定扩展、裂纹非稳定扩展和峰后失稳等。

At each stage, forearm blood flow was measured by strain-gauge plethysmography.

每一阶段，前臂血流通过应变仪的体积描记法进行测量。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。