查询词典 tensile strain

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。

Then, an empirical formula of tensile strength of soil with the effects of dry density as well as water content is proposed, and the character of tensile stress-strain relationship of the clayey soil tested in this thesis.

同时，总结出了可以综合考虑干密度和含水率的抗拉强度计算公式，并且分析了本文所研究的粘性土的拉应力应变关系特征。

The dynamic tensile tests are carried out on the pneumatic indirect bar-bar tensile impact tester. The influence of strain induced austenite transformation and deformation twins on the mechanical properties and fracture behaviors of the studied TWIP steels are investigated using LOM, XRD, SEM and TEM techniques.

动态拉伸试验在气动式间接杆杆型冲击拉伸试验机上进行，采用LOM、XRD、SEM和TEM等手段分析研究了奥氏体的形变诱发相变和形变孪晶对TWIP钢力学性能的影响，并分析了TWIP钢的断裂行为。

The experimental results show that 0.2%yield she ar stress, ultimate shear stress and 0.2%yield tensile stress, ultimate tensile stress under torsion-tension combined high strain-rate decrease with increasi ng temperature.

试验结果表明：该材料在高应变率扭-拉复合加载下的名义剪切屈服强度、剪切强度极限和名义拉伸屈服极限、拉伸强度极限均随温度的升高而降低。

Data were obtained and analyzed, including ultimate tensile stress σ(subscript max, breaking strain ε(subscript m, and modulus of elasticity under 0.3MPa stress. Results The ultimate tensile stress of three groups are respectively 6.01±1.43、6.96±0.93 and 12.94±2.03MPa. Samples following GA treatment improve correspondingly, but stiffness of the tissue is increased.

结果 三组极限抗张强度分别为(6.01±1.43)、(6.96±0.93)和(12.94±2.03)MPa，戊二醛处理后的SIS在强度上有较大改善，但是组织变得僵硬；亚甲基蓝光氧化交联处理后的SIS强度改善不是特别明显，柔韧性增强。

The results indicated that, the stress-strain curve of bottom stems obeyed Hooke's law; the tensile strength of Bromus inermis was higher than Coronilla varia, but the elastic was smaller; the tensile strength and cellulose contents of Coronilla varia were smallest (13.87%) in the four species.

研究结果表明：4种牧草收割期底部茎秆应力σ与应变ε曲线服从虎克定律，禾本科扁穗冰草茎秆抗拉强度高而弹性小；豆科小冠花茎秆抗拉强度最低，柔韧性强，纤维素质量分数也最低（13.87%）。

Results: Before the fixed bridge was applied, under vertical load, the high-stress region was near around the apical of periodontal ligament with mainly compressive stresses. Under oblique load, the high-stress region was near around the cervical of periodontal ligament with both tensile and compressive stresses. After the fixed prosthodontics, stress and strain distributions were similar with that when the fixed bridge was not applied. But the maximum stress, strain and displacement increased apparently. The stresses in exterior surface of periodontal ligament were larger than that of interior surface; this character of periodontal ligament under vertical load was more obvious than that under oblique load.

结果：固定桥修复前，垂直载荷下，基牙牙周膜的应力以压应力为主，应力集中在根尖；斜向载荷下，基牙牙周膜的应力主要是拉应力和压应力，应力集中在唇、舌颈缘；固定桥修复后，基牙牙周膜的应力和应变分布规律与修复前相似，但最大应力、应变值都明显增大；牙周膜内表面的应力大于牙周膜外表面；垂直载荷时，牙周膜内、外表面的应力差异更为显著。

The Evolutional manners and dimensional rules of γmatrix and γ'precipitates in the [001], [110] and [111] oriented specimens of nickel-base single crystal superalloy CMSX-4 during the tensile creep at 1253 K and 350 MPa were studied.The effects of the change in characteristic dimensions of γand γ' phases on the strain and strain rate were compared for the differently oriented single crystal specimens.It was found that the effect of change in mean width of γchannels along the direction of directional coarsening of γ' precipitates(the lamella spacings between adjacent rafted γ'precipitates)on the strain and strain rate is remarkable.

研究了1253K，350MPa拉伸蠕变过程中[001]，[110]和[111]取向镍基单晶高温合金CMSX－4基体相γ和析出相γ'的演变方式及相尺寸的变化规律比较了不同取向单晶试样中γ和γ'特征尺寸的变化对蠕变应变量和应变速率的影响结果表明，沿γ'定向粗化方向上γ基体通道宽度的变化速率对蠕变应变量和应变速率的影响较为明显。

According to time-temperature characteristic of hot stamping, tensile experiments were carried out for hot stamping steel USIBOR1500 at the temperature 600℃~800℃ and strain rate 0.01/s~0.5/s on the test machine Gleeble3800 and corresponding stress-strain curves were obtained.

根据热冲压工艺的时间－温度特征，采用Gleeble3800热模拟系统，在温度600℃~900℃、应变速率0.01/s~0.5/s下，对热冲压钢板USIBOR1500进行热拉伸实验，获得了相应的应力－应变曲线。

The flow behavior of 5182 aluminum alloy for automotive body sheet at the strain rate ranging from 0.001 to 0.1 /s and temperature ranging from 323 to 573 K was studied on Instron8032 tensile tester. A constitutive equation using up-dated Fields-Backofen equation was established to describe the flow behavior of 5182 aluminum alloy during warm tensile.

摘 要：在变形温度为323~573 K、应变速率为0.001~ 0.1 /s条件下，采用Instron8032电子拉伸实验机对汽车用5182铝合金板的流变行为进行研究，采用修正后的Fields- Backofen方程描述5182铝合金温拉伸时的流变行为，建立5182铝合金在温拉伸时的应力－应变本构模型。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。