查询词典 fatigue curve

Marc this paper carried out a finite element numerical simulation on the forming process of cold extruding for the starlike sleeve of constant speed cardan joint of car. The interrelated technological problems of numerical simulation were discussed in detail, the variation curve of extruding force during the course of loading, the cloud chart, which varies along with time, of temperature field distribution of workpiece, the equivalent plastic strain cloud chart of workpiece and the stress distribution cloud chart of diem inner ring were obtained thus explained fairly nice the reason of fatigue damage of dies.

Marc对轿车等速万向节星形套冷挤压成型过程进行了有限元数值模拟，详细讨论了有关数值模拟技术问题，得出了挤压力在加载过程中的变化曲线、工件随时间变化的温度场分布云图、工件等效塑性应变云图及模具内圈的应力分布云图，较好地解释了模具疲劳破坏的原因。

Methods: The action potential of sciatic trunk and contract curve of gastrocnemius muscle of hoptoad and mouse were recorded, and the time of fatigue in nerve centre, neuromuscular junction and muscle were measured.

分别记录蟾蜍和小鼠坐骨神经干动作电位和腓肠肌收缩曲线，测定中枢、神经-肌接头和肌疲劳的时间。

Test results show that the equivalent strain method exhibits a higher life assessment precision as compared to that by linear damage summation. The critical damage formula for equivalent strain can quite well predict the actual damage incurred and the equivalent strain-life curve with hardness modification fundamentally conforms with the pure fatigue strain-life curve.

试验结果表明，在预测寿命时等效应变法比线性累计损伤法具有更高的精度，等效应变的应力下临界损伤公式能够很好地预测实际损伤，考虑硬度修正的等效应变-寿命曲线和纯疲劳应变-寿命曲线基本一致。

Tension-tension fatigue experiment was carried out at three different stress-level, the fatigue life and the S-N curve of the unnotched laminates were acquired.

进行了三种不同应力水平下的拉-拉疲劳试验，得到无孔试件的疲劳寿命及其S-N曲线；通过研究复合材料疲劳寿命预测的方法，建立了该无孔层合板剩余刚度疲劳累积损伤寿命预测模型。

The results of low-cycle fatigue tests were used to analyze fatigue life curve of pressure vessel.

把低周疲劳特征研究结果应用于压力容器疲劳寿命曲线分析，并将焊缝实验结果与著名的Langer疲劳计算曲线及美国ASME规范设计曲线进行了比较，为16MnR钢焊接压力容器的疲劳寿命设计提供了理论依据。

In engineering application, especially in the design stage, it is always using the material fatigue property curve and fatigue strength factors, ie.

在工程应用中，特别是在产品设计阶段，通常利用材料的疲劳性能曲线，再考虑零部件的尺寸系数、表面加工系数及应力集中系数等疲劳强度影响因素进行构件疲劳强度设计。

It is feasible to predict the fatigue life of the structure in the critical location when the S-N curve of the fatigue life applied. The meanings and conclusions can effectively instruct the design of leaf spring system.

最后对模型采用疲劳寿命的S-N曲线法计算能较准确的预测出疲劳破坏发生的区域及结构的疲劳寿命，在实际应用中对钢板弹簧的设计有重要的指导意义。

According to the test data, the fatigue strength time-varying model with the deterioration of fatigue strength coefficient in S-N curve was put forward.

根据试验数据，提出S-N曲线中疲劳强度系数下降的疲劳强度时变模型。

The research made it possible to forecast the fatigue life of damaged materials, and the prediction was based on the S-N curve from the fatigue test of th

对反应器自增强损伤机理和疲劳损伤等问题的研究为超高压容器取材、安全性设计以及确保高压容器长期、稳定和安全运行有着建设和指导意义。

First of all, the concept of S-N curve and the procedures of p-S-N curve fatigue test, data processing were introduced. And then, these procedures were taken into practice on 4 kinds of aluminum alloy welded joints: corner joint, butt joint, cruciform joints and double-sided lap joint.

文中首先介绍了S-N曲线的概念和p-S-N曲线疲劳试验方法和数据处理方法，并按照这些方法对角接、对接、十字接和双面搭接四种铝合金焊接接头试样进行了疲劳试验，得出了这四种焊接接头的中值S-N曲线和置信度为95%，存活率分别为90%、99%下的p-S-N曲线及其方程。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。