拉伸曲线

By this MGD,the damage state can be described more exactly and clearly and the problem of complex loadings can be solved expediently.

在对复合固体推进剂定速拉伸性能预测时取得了与实验曲线相一致的结果，从而验证了本模型的正确性。

In the course of FEM model building, tensile test experiment is taken to work out the real stress-strain curve. Ring compress test is also done in this paper, through which the friction coefficient is worked out and the friction mechanism and relevant friction model for tube stagger spinning is studied. The experiments ensured the veracity and reliability of the FEM modeling.

建模过程中，通过材料拉伸试验测定了旋压材料00Ni12Cr5Mo4TiAlV时效钢的真实应力应变曲线；利用圆环镦粗试验测定了材料在不同润滑状态下的摩擦系数，并对强力旋压的摩擦性质和摩擦模型的选择进行了研究，确保了建模关键参数的准确性和可靠性。

The influence of strain speed to stress-strain curve is studied by room temperature, low strain speed, tension experiments. It is shown that the RPVC is kind of viscoplastic materials.

在材料的常温低应变速率拉伸试验的基础上，研究应变速率对应力—应变曲线的影响，研究显示：硬聚氯乙烯是粘塑性材料。

The fatigue test of CFRP bars was carried out at the different cyclic stress, choose the 70% ultimate tensile stress of CFRP bar as the maximum cyclic stress, under the cyclic ratios of R=0.5 （the minimum-to-maximum stress ratio） and R=0 and the fatigue behavior of CFRP bars was investigated.

进行了不同循环应力下CFRP筋的常温疲劳试验，选取CFRP筋70％的极限拉伸应力作为最大循环应力，在R=0.5（最小循环应力与最大循环应力的比）和R=0的应力率下，测量了CFRP筋的疲劳寿命曲线，研究了CFRP筋的疲劳性能。

The structure is novel,the technology is advanced,the structure is novelty,the operation is easy and flexible and maintenance is convenient all kinds of material's mechanical performance's arylate and the test of production's quality.It is used for scientific research department advanced school or technical secondary school and enterprise.

技术参数： 1、量程范围：5KN 力值精度：示值的±0.5%以内 3、试验速度：0.1mm/min--500mm/min 速度允许误差：示值的±1.0%以内 4、有效拉伸距离：900mm 5、位移测量精度：示值的±1.0%以内 6、变形测量精度：示值的±1.0%以内 7、采集速率：50次/S 8、打印功能：打印测试后的试验数据及曲线 9、电源电压：AC220V 50Hz 10、外型尺寸：550mm×450mm×1600mm 11、重量：75kg

The first rapid relaxation process, a second relaxation process after going by a flat region and another stress increase process in the long time region, were observed from tensional stress relaxation curves of DMSO swelling and decrystallization treated oven-dry wood.

从DMSO膨胀处理及非晶化处理绝干木材的轴向拉伸应力松弛曲线，观察到了初始的快速松弛过程、经过平坦区后的缓慢的再次松弛过程及长时间后的应力增加过程。

Take DMSO swollen treatment and DEA-SO2-DMSO decrystallization treatment for example, the X-ray diffraction and the Tobolsky's intermittent stress relaxation of treated woods were determined during soaking in water, analyzed the effects of water on crystal degree and inter-cohesion of treated woods. According to these continuous relaxation curves measured in water with different temperatures, various thermodynamic quantities were obtained by using Eyring absolute rate theory, and reviewed the chemical reactions in wood which occur in different relaxation process. For the first time quantify these crosslinkings formed in the process of tensional relaxation by using the SMCIR intermittent stress relaxation way, and defined the cross-linking reaction types. In order to find out the contribute of drying to the fixation of deformation of chemically treated wood, stress relaxation of oven-dry untreated and treated wood was measured during the process of temperature elevation and descend, then analyzed the effect of temperature change on relaxation mechanism of treated oven-dry wood. According to continuous relaxation curves of oven-dry treated wood under various constant temperature, calculated the thermodynamics of relaxation process and discussed the mechanism of molecule change in wood, at the same time, also quantified these cross-linkings produced in wood by intermittent method and on the basis of which the model of molecular change during relaxation process of chemically treated was constructed.

以DMSO膨胀处理及DEA- SO2-DMSO非晶化塑化处理为例，测定了两种处理木材在水浸渍过程中的X射线衍射及Tobolsky间歇应力松弛，分析了水对处理木材结晶度及内部凝聚力的影响；通过未处理和两种处理木材在不同温度水中的连续应力松弛测定，应用Eyring的绝对速度反应理论计算并获得了松弛过程中的各热力学量，分析了在水中松弛过程中不同阶段木材内部发生的化学反应；并首次采用SMCIR连续·不连续双曲线应力松弛法定量了轴向拉伸应力松弛过程中木材内部产生的架桥量，明确了交联反应的类型；为了了解干燥对处理木材塑性变形固定的影响，测定了未处理和两种处理绝干木材在温度下降过程和上升过程中的应力松弛，分析了温度变化对处理绝干木材应力松弛的影响；根据多个温度水平下的连续应力松弛测定曲线，计算松弛过程的热力学量，考察了绝干木材在松弛过程中内部发生的分子变化机理，同时也用间歇法定量了木材内部新形成的架桥量，并在此基础上构筑处理木材在松弛过程中内部分子构造的变化模型。

Using ethyne as source gas, CNTs were successfully synthesized by CVD method. By comparing different synthesis technics, the influences of parameter to the grow of CNTs, such as catalysts, growth time, reaction temperature and ratio of all kinds of carrier gases were investigated. The results showed that the influence of carrier gas, reaction temperature, and the growth time on synthesis of CNTs was significant. In conclusion, a better condition for carbon nanotube growth was obtained. Through analyzing Raman Spectrum of samples, GM and SWNTs' characteristic peak-RBM was indicated.

采用乙炔为碳源、氢气和氩气为载气，利用气相催化热解法在AAO模板上成功的制备出了纳米碳管，用TEM，SEM，EDS，Raman等表征方法研究了生长温度、裂解时间、载气含量和不同催化剂对碳纳米管的石墨化程度、产物形态的影响，指出了单壁碳纳米管的特征振动模式—径向呼吸振动模以及拉伸振动模式G模，缺陷导致的D模，并采用蒸金后的样品进行了场发射的测试，得到了F-N曲线，与理论符合较好。

Resistance stress strain curves of TiNi superelastic wire during tension and unloading in constant temperature were test. Mechanism of the mechanics property and resistance nature was analyzed.

测试了TiNi超弹丝在恒温拉伸、卸载过程中的电阻-应力-应变关系曲线，分析了力学及电阻特性的变化机理。

PVA removing process is optimized by orthogonal test, and by use of analysis of variance method, factors which affect PVA removing result and the final quality of fabric are also studied. The PVA removing process is optimized. Comparing with twist woven plain fabric whose woven parameters are same to corresponding twistless fabric, properties of twistless woven fabric including breaking strength, tear strength, flex abrasion, air permeability, water vapour transmission, pilling resistance, drape, dimensional stability, wicking, and dyeing uptake are tested.

无捻纱机织物与有捻纱机织物(文中所提到的这两种织物的织物密度、纱线的号数等织造参数相同)的对比试验是本文的又一重点，本文通过对比试验，测试了织物的拉伸性能、撕破性能、顶破性能、耐磨性能、外观保持性、悬垂性、刚柔性、透气性、透水性、芯吸性能，绘出了上染速率曲线等，得到了大量的对比数据，并以数据为基础进行了分析，得出结论为：无捻纱织物具有良好的透湿、保暖、吸湿性能以及柔软的手感和较高的覆盖率，这些都证明了无捻纱机织物有良好的舒适性。

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。