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tension process
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  拉伸过程
     Molecular dynamics simulation for axial tension process of α-Fe and Ni nano wires
     α-Fe和Ni纳米丝单向拉伸过程的分子动力学模拟
短句来源
     This system solved necking point snap accurately and minimum section area calculation through real time tracking tension process. The method of measurement directly and stress calculation is discovered, by which the true stress-strain curve can be obtained.
     该系统通过CCD相机可以实时地跟踪试样拉伸过程的颈缩位置及颈缩量,解决了无法准确捕捉颈缩点和计算最小截面面积的实际问题,找到了直接测量和计算真实应力的方法,利用这种新方法可以直接由计算机给出真应力-应变关系,并绘制真应力-应变曲线。
短句来源
     Behavior of viscosity, elastic and plastic deformations of Al-5% Cu alloy in solid-liquid coexistence zone in tension process have been invcstigated on an apparratus specially designed.
     在自行研制的装置上研究了Al-5%Cu合金固液共存区拉伸过程的粘性、弹性和塑性变形规律。
短句来源
     The results show that during SEM in-situ tension process, cracks initiate at ceramic inclusions.
     结果表明:在原位拉伸过程中,裂纹首先在试样表面的夹杂物处产生,裂纹主要萌生于夹杂物/合金基体的界面;
短句来源
     The results show that the fractures were easily initiated from inclusion,and propagated into inclusion normal to or about 45° with main stress axis during in-situ tension process.
     结果表明,在原位拉伸过程中,夹杂物处是裂纹萌生的择优位置,且沿与应力轴垂直或约45°向夹杂内部扩展。
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  “tension process”译为未确定词的双语例句
     Tension Process Analysis of Cables in Steel Roof of Fudan Zhengda Gymnasium
     复旦大学正大体育馆钢屋盖拉索张拉过程分析
短句来源
     With the help of the system,the dynamic tension process of yarn can be measured and recorded during winding.
     该系统能够对络纱动态张力进行定量测定并绘制张力变化曲线 ,对研究络纱张力变化规律 ,分析影响张力变化的因素以及控制络纱张力波动 ,实现恒张力络筒具有重要的意义 .
短句来源
     A Simplified Spatial Method to Calculate the Prestressing Loss Caused by Batched Tension Process
     分批张拉预应力损失的空间简化计算方法
短句来源
     Monitoring the Tension Process of Concrete Bridge with Fiber Bragg Grating Sensors
     基于FBG光纤监测系统的混凝土桥梁张拉过程监控
短句来源
     Research on the Tension Process of Wide Plate Specimen for Simulating the Hydrobule of Thick Wallness Spherical Vessels
     宽板拉伸模拟厚壁壳体胀球过程的研究
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  相似匹配句对
     In the process of the E.
     E.
短句来源
     process.
     工艺的优劣分析。
短句来源
     TENSION ANALYSIS OF FILAMENT WINDING PROCESS
     纤维缠绕过程中的张力分析
短句来源
     Measurements of Yarn Tension in Textile Process
     纺织过程中的纱线张力测试方法
短句来源
     Tension gastrothorax
     张力性胃胸
短句来源
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Dynamic stress-strains relations of sheet at lower and middle strain rates(ε=10~(-5)-10~(-1)-S(-1))have been experimentally measured on the material test machine DSS-25 by tension, which gives the loading speed with a controllable value, and can be made constant during a tension process. In order to obtain the information of deformational resistance at higher strain rates, a new high pressure azotic expansion test machine has been constructed which makes it possible to obtain strain rates,ε=lO(-l)-10~2...

Dynamic stress-strains relations of sheet at lower and middle strain rates(ε=10~(-5)-10~(-1)-S(-1))have been experimentally measured on the material test machine DSS-25 by tension, which gives the loading speed with a controllable value, and can be made constant during a tension process. In order to obtain the information of deformational resistance at higher strain rates, a new high pressure azotic expansion test machine has been constructed which makes it possible to obtain strain rates,ε=lO(-l)-10~2 s(-l), even higher, and to measure stress-time and strain-time relation.

在DSS-25试验机上,用拉伸板状试件的方法,进行了中、低速(10~(-5)~10~(-1)s~(-1))的试验.该试验机在全部拉伸过程中可保持其加载速度恒定.为了获得更高的应变速度,组装了氮气膨胀式拉伸仪,它的速度可达10~(-1)~10~2s~(-1),并且可以给出应力-时间和应变-时间关系曲线.含铜软钢的试验表明,应变速度对变形抗力有明显的影响.在试验条件下,随着加载速度的增加,变形抗力有显著的提高.根据金属位错的理论,确定了变形抗力的理论结构模型,它包括应变速度ε,变形程度ε对变形抗力的影响和A、B、n_1、n_2等系数.?从试验结果来看,在很宽的变形速度的范围内,该公式较好的反映了实际情况.

Three ways-machining, embedded sheet and tension process-used usually with the forming of a simulated crack on the photoelastic specimen are given in this paper. The first and the second ways can only give a notch crack on the specimen, but it is the third that can produce a perfect "natural crack" (or its width is approximately zero). The effect in the crack specimen on which the crack is formed in different ways and the photoelastic experiment is made to determine SIF K_I is analyzed. Some distinguishing...

Three ways-machining, embedded sheet and tension process-used usually with the forming of a simulated crack on the photoelastic specimen are given in this paper. The first and the second ways can only give a notch crack on the specimen, but it is the third that can produce a perfect "natural crack" (or its width is approximately zero). The effect in the crack specimen on which the crack is formed in different ways and the photoelastic experiment is made to determine SIF K_I is analyzed. Some distinguishing features for determining SIF K_I in "natural crack specimen" are presented. The experiment shows that the measurment in "natural crack specimen" possesses several advantages such as wider range of data collection, stabler values and clearer distribution regularity of the test points on T-N curve, therefore higher accuracy of results measured can be obtained. So "natural crack" specimen is a perfect test specimen. In addition, three criterions for assessment of quality of the crack specimen are herein provided.

本文总结了目前光弹性法研究断裂力学中于模型试样上制作模拟裂纹所用的三种方法——机械加工,夹片和张拉法。前两种方法只能在试件上形成切口状裂缝,而第三种方法可以形成品质优良的“理想尖裂纹”(即裂缝宽度为零的尖裂纹)。本文分析了在用不同方法所形成的裂纹试件,对光弹性法实验确定K_1的影响。给出“理想尖裂纹”试件作K_1测定中所呈献的特点.实践表明,在“理想尖裂纹”试样上进行测定时,由于数据采集范围大,数值稳定性好,T—N曲线上试验点分布规律性明显,能带来高精度的测定结果。此外,文中还提出评定裂纹试样的三条质量标准。

A t'init element program based on elasto-plastic finite deformation theory is used to research the necking problem of titanium alloy. A new analytical model recommended in this paper is that an inclusion in a specimen is first broken to form a void, the void enlarges and a neck can be formed, then the enlargement of the void is continued and the void starts to extend or voids start to coalescence, in the final the specimen is broken. This model is consisted with the electron microscope analysis of the necking...

A t'init element program based on elasto-plastic finite deformation theory is used to research the necking problem of titanium alloy. A new analytical model recommended in this paper is that an inclusion in a specimen is first broken to form a void, the void enlarges and a neck can be formed, then the enlargement of the void is continued and the void starts to extend or voids start to coalescence, in the final the specimen is broken. This model is consisted with the electron microscope analysis of the necking process and it is more rational than other models recommended in the previous literatures. In the whole tension process the calculated and experimental curves-are coincided well. For the configuration of the neck a cubic curve is foudmore appropriate than a hyperbolic curve.

本文应用弹塑性有限变形理论的有限元程序,研究钛合金的颈缩问题,提出了一个由试件内部夹杂物首先开裂,形成空穴,空穴增长,形成颈缩,在颈缩充分发展后,空穴扩展和汇合,最后断裂的新模型,这一模型是根据缩过程的金相分析提出的,比以往的有限元模型更符合物理事实,在全拉伸过程中,计算曲线和实验曲线符合良好,计及试作内部空穴或材料疏松。建议真应力应变曲线稍刚于Bridgman的修正曲线,文中还提出了一个颈缩区外形的三次曲线公式,在试件初始直径的1.5~2倍长度范围内,相当准确,比Bridgman的双曲线公式适用区域大为增加。

 
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