查询词典 tensile stress

Test evaluation method of threshold stress of environmental cracking usually adopts NACE method A, refers to the NACE Standard Tensile Test. This test and its relevant data handling are introduced in this paper.

环境断裂临界应力的试验评价方法通常采用NACE方法A即NACE标准恒载荷延伸试验方法，对该方法及相关的数据处理作了介绍。

The criterion is similar to hyperbolic strength criterion including uniaxial compression strength and uniaxial tensile strength, which is an extended form of Griffith-Murrell criterion essentially under the condition of polyaxial stress when hydrostatic pressure is lower, and it represents the first failure type. However, the criterion is similar to generalized Mises criterion when hydrostatic pressure is higher, and it represents the second failure type. The transition part between the two criteria represents the third failure type when hydrostatic pressure is high.

该准则包含单轴抗压和抗拉强度，在静水压力较低时，实质上它是Griffith-Murrell准则在多轴应力状态下的一种扩展形式，反映脆性岩石破坏类型1；在很高静水压力下该准则可转化为广义Mises准则，反映脆性岩石破坏类型2；而当静水压力较高时，该准则处于上述两种准则的过渡阶段，反映脆性岩石破坏类型3。

CL which can be detected during tensile testing of unaged polyami-de and UV-irradiated polypropylene specimens, has been found to be an effect of thermally unstable hydroperoxides decomposing due to stress-induced adiabatic heating, which after necking is localised to the travelling neck shoulders.

在对物理尼龙和紫外线照射过的聚丙烯样件的拉伸测试过程中，采用化合光对其进行检测，可以发现一种不稳定的热效应产生的氢分解。这是由于在受拉伸颈部的轴肩局部位置，因应力作用而产生的绝热加热。

CL which can be detected during tensile testing of unaged polyami-de and U-irradiated polypropylene specimens, has been found to be an effect of thermally unstable hydroperoxides decomposing due to stress-induced adiabatic heating, which after necking is localised to the traelling neck shoulders.

在对物理尼龙和紫外线照射过的聚丙烯样件的拉伸测试过程中，采用化合光对其进行检测，可以发现一种不稳定的热效应产生的氢分解。这是由于在受拉伸颈部的轴肩局部位置，因应力作用而产生的绝热加热。

The applicability of this constitutive model is evaluated with the simulations of material tests conducted by Sasaki et al., includes (1)Uniaxially constant strain amplitude cyclic test,(2)Fast in tension/Slow in compression constant strain amplitude cyclic test,(3)Slow-fast-slow constant strain amplitude cyclic test,(4)Cyclic strain with tensile hold time test. Simulations based on this constitutive model have a good agreement with (1),(2) and (3), proofs that it can describe the cyclic stress-strain behavior of 60Sn/40Pb solder very well.

为验证本模式之能力，本文选择Sasaki等人之实验为对象，分别对60Sn/40Pb焊锡在(1)定应变振幅之循环单轴负荷实验、(2)拉伸快/压缩慢之定应变振幅循环负荷实验、(3)慢-快-慢之定应变振幅循环负荷实验、(4)拉伸应力保持之循环应变实验下的材料行为进行模拟，由(1)、(2)及(3)之结果证明本模式对60Sn/40Pb焊锡循环应力-应变整体行为具有理想的描述能力，并对循环塑性应变范围与应力范围之值有准确的预估。

The tensile mechanical properties of materials have a little influence on the stress and strain distributions in front of notches.

结合有限元分析的工作，也只给出了特定试样中测得的细观损伤、断裂力学参数，对缺口前的应

Fracture is caused by sheet's tensile instability, Hill's totalized instability theories and Swift's diffuse instability theories which based on continuous mechanics are applied to isotropic blank; Marciniak and Kuczynski's theories are applied to orthotropic blank, which introduced thickness imperfections normal to the principal stress and strain direction as a groove pre-existing defects in the material. The stability of each part of blank at each moment is described by numerical method, and the results are shown by computer simulation, thus the fracture in sheet forming can be predicted preciously.

拉裂是由于拉伸失稳引起的，以连续体力学为基础的Hill集中性失稳理论和Swift分散性失稳理论应用到各向同性板料进行失稳判定；将Marciniak和Kuczynski的凹槽损伤失稳理论应用到正交各向异性板料拉伸失稳判定，对板料各处在成型过程中不同时刻的稳定性进行数值化描述，并运用计算机仿真技术进行直观的表现，可以准确地预测板料成型中可能出现的拉裂现象。

The dynamical processes of the nucleation and propagation of stress corrosion cracking of four low alloy steels with a wide range of tensile strengths in aqueous media with various polarization conditions, in a K_2Cr_2O_7 inhibitor solution and in some organic solvent such as acetone and alcohol were traced with an optical microscope.

用抛光的恒位移试样跟踪观察了具有广泛拉伸强度范围的四种低合金钢在各种水溶液中(高纯水、阳极极化和阴极极化下的水溶液，0.1NK_2Cr_2O_7水溶液)以及含痕量水的有机溶剂中应力腐蚀裂纹产生和扩展的动态过程。

The main beam of car dumper roller is made a important transformation using tensile bar, using the other method auxiliary, we solve thorough the problem of main beam break due to stress focus , Operation practice shows that after transformation, the item is a great success.

介绍秦皇岛港煤码头四期工程翻车机系统的技术改造项目，其中翻车机钢结构的主梁部分采用拉杆结构，辅之以其他方法，彻底解决了应力集中导致的主梁断裂问题，实践表明，改造获得了成

The result of SSRT showed that the tensile strength in fusion zone of LBW weldment is higher than base metal, and the IGC in weld decay zone did not crack because of the stretch;IGC in fusion zone of GTAW weldment leads to early fracture, and the IGC in weld decay zone clearly stretched and cause the material to crack. Intergranular stress corrosion cracking in this section is still possible.

慢应变速率拉伸试验结果，LBW焊件之焊道强度高於母材，且於焊接衰化区所造成之沿晶腐蚀并未因拉伸造成开裂；GTAW焊件的焊道沿晶腐蚀导致断裂提早发生，且在焊接衰化区的沿晶腐蚀明显拉伸造成开裂情形，仍有在此区域发生沿晶应力腐蚀破坏的可能。

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％。