弹性模量

The results show that the CNTs are dispersed effectively by bell jar immersing precast block casting. The maximal tensile strength and the elongation of the AZ31/CNTs composites are enhanced by 41.3% and 119.4%, respectively, and the elastic modulus and micro-hardness are also raised by 67.8% and 66.9%, respectively, when compared with those of the as-cast AZ31 Mg alloys. The CNTs can greatly refine the grains of the composites, playing a good role in reinforcing the matrixes of AZ31 Mg alloy. The fracture sections of the composites mainly consist of dimples and prisms, which demonstrates quasi- cleavage fracture modes.

结果表明：钟罩压块法可以有效地将碳纳米管分散到镁合金熔体中；CNTs对AZ31镁合金的力学性能有较强的增强效果，与本研究中的铸造AZ31合金相比，AZ31/CNTs复合材料的最大抗拉强度和伸长率分别提高41.3%和119.4%，弹性模量和显微硬度分别提高67.8%和66.9%；CNTs对AZ31镁合金基体晶粒的细化作用显著，与镁基体界面结合较好；复合材料试样断口形貌由韧窝和撕裂棱组成，呈现准解理断裂特征。

In order to enhance itscaking intensity, often greatly increases the cement the amount used,because its lime sand quite big (generally is 1: 1), this kind ofcaking mortar existence very big flaw, like brittleness oversized butflexibility insufficient, its compressive strength higher, but anti-booklet intensity and caking intensity lower and so on, the elasticitycoefficient higher distorts the ability to be very inferior.

为了提高其粘结强度，往往大大增加水泥的用量，由于其灰砂比较大(一般为1∶1)，这种粘结砂浆存在很大缺陷，如脆性过大而柔韧性不足，其抗压强度较高，而抗折强度和粘结强度较低等，弹性模量较高而变形能力很差等。

The results show that:(1) The penetration resistance of functionally graded layered armour made of metal Matrix Composites is better than that of the Aluminum plate;(2) The penetration resistance of the functionally graded layered armour whichlay_up is 0%/57%/0%/26%/0%/12%/0% is the best;(3) The resistance penetration of the the functionally graded layered armour can be greately promoted through optimizing the lay_up and volume fraction of the reinforced particle;(4) The functionally graded armour in which the particles distribute continuous has better behavior of resistance penetration when the volume fraction of the reinforcements are constant;(5) The higher volume fraction of the reinforcements at the surface of FGM and the more non-homogeneous the reinforcements distribution, the higher thesurface Youngs Modulus and the flow stress are;(6) The behavior of penetration resistance of the functionally graded armour in which the particles distribute continuously is better than that of homogeneous steel plate;(7) The functionally graded armour provedes a important approach for the optimization and design of the resistance penetration;(8) The numerical results of simulation of the bird striking the aircraft structureshow that the finite element model of the balance leg is effective;(9) The numerical results show that the structure internal force is relative largewhen the bird strikes the top of the balance leg;(10) The process of the birdstrike is thaf.after the bird penetrting through the front skin of the balance leg and striking the front beam,the bird is broken up in three parts.

经过本文所进行的数值模拟后我们发现：(1)在层状梯度装甲板的抗侵彻过程中层状功能梯度板比铝板的抗侵彻性能好；(2)在层状梯度装甲板的抗侵彻过程中铺层顺序为0%/57%/0%/26%/0%/12%/0%的功能梯度装甲板的抗侵彻性能最好；(3)通过优化组合层状梯度板的铺层顺序以及增强颗粒的含量可以大大改善梯度板的抗侵彻性能；(4)当SiC颗粒体积含量一定时，增强颗粒连续分布的功能梯度板表现出了优越的抗侵彻性能；(5)增强颗粒连续分布的功能梯度板表面SiC颗粒体积含量越高，分布越不均匀，表面的弹性模量就越高，屈服应力就越高；畜此工业大学硕士研究生学位论丈(6)增强颗粒连续分布的功能梯度装甲板比匀质钢板表现出良好的抗侵彻性能；(7)功能梯度装甲板为整个抗侵彻性的优化设计提供了重要的途径。

Second, the equivalent bulk modulus of elasticity of brake cylinder and brake line are derived out, the lumped parameter model of brake line is developed, the dynamic performance of the model are analyzed, the effect of physical and geometric parameters on natural frequency and damping are studied.

其次，计算出制动器的刚度以及轮缸与管路的等效体积弹性模量，采用集中参数分析法，建立了制动管路的理论模型，分析了该模型的时域与频域特性，研究了制动管路及制动器参数对动态特性的影响。

In this experiment,X-ray diffraction apparatus was used forthe first time to examine and research on microdensity,crystallinity and microfibril angle.Through research on the radial variation of bamboo microdensity,this paper points out the conceptions of bamboo hull density and bamboo pulpdensity,and this provides basis for the multiple layer utilization of bamboo.Using computer image-processing technology to carry on precise examinationvolume fraction of bundle sheath,that is key factor to reveal the relationshipbetween bamboo structure and properties.For the first time using resonantvibration means to test the dynamic elastic module,the result shows very ideal.And for the first time researched on the variability of electric conductivityproperty of bamboo.

在本次实验中，首次使用X射线衍射仪对竹材的微密度、结晶度、微纤丝角进行测定和研究，深入研究了竹材微密度的径向变异规律，首次提出竹青密度和竹肉密度的概念，为竹材的径向分层利用提供依据；首次使用微机图象处理技术对竹材的组织比量，主要是纤维束比量进行了精确测定，从而为揭示竹材结构与材性关系打下基础；首次使用共振法对竹材的动态弹性模量进行测定和研究，测量结果是比较理想的；首次研究了竹材导电性的变异。

The longer treatment time of samples would result in the more reduction of compressive strength and Young's modulus,because the shale or clay in rock sample would get soft by the drilling fluid filling.

岩石矿物中的泥质黏土矿物遇到钻井滤液后产生软化效应，致使岩样呈现：经钻井液处理时间越长，其抗压强度和弹性模量下降越多的趋势。

It is considered that the experimental results coincide with the simulating results.The simplified graded inertia anode model is provided from the improvement of the first 2-D graded model. This model is made of cup-shape section, core bar and plugging compound. ANSYS FEM software is used to compute the distribution of the thermal stress in the model.

针对第一种二维梯度阳极模型存在的缺陷进行改进，设计了一种简化的梯度阳极模型，整个模型由外部杯状结构(NiFe_2O_4+Ni)、芯杆(1Cr12WMoV合金钢)、中间填充层(NiFe_2O_4+Cu)三部分组成，由于这三部分的热膨胀系数、弹性模量等物性参数是呈梯度缓慢过渡的，因此可以把这个模型看成是广义的梯度模型。

The result of examination show that each mechanical performance was enhanced by the strengthening soaking,the cross grain compressive strength, MOE, MOR, abrasion amount in the edge grain surface and flat grain surface increase 21%, 11.2%, 32.9%, 160%, 162% respectively.

经检测，浸渍强化可以提高各项力学性能指标为，其中顺纹抗压强度、抗弯弹性模量、抗弯强度、径面、弦面各增加21%、11.2%、32.9%、160%、162%。

Taking the surrounding rock of deep-buried caverns at the Jinping Second Class Waterpower Station as an example,uniaxial compression tests are performed to study the influence of temperature on the Poisson ratio and elastic modulus under different temperatures.

选取锦屏二级水电站引水隧洞围岩大理岩作为试样，进行不同温度条件下的单轴压缩试验，分析温度作用对大理岩弹性模量、泊松比等力学参数的影响。

The dependence between the flexural strength and the size of Chinese fir dimension lumber was investigated.206 dimension lumbers were sorted into three test groups in terms of dynamical modulus of elasticity.

选取206根人工林杉木规格材，按照动态弹性模量配成3个测试组，研究了规格材测试跨度与其抗弯强度之间的依存性，并利用斜率法和形状参数法求得抗弯强度5%分位值和50%分位值的长度尺寸效应。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。