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损伤法则
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  damage rule
     Then, according to the S-N curve which is offered by the IIW and the Palmagren-Miner cumulative damage rule, the fatigue life of the welded frame are predicted based on the dynamic stress spectrum.
     然后,基于线路动应力测试得到的动应力谱,考虑焊接结构的特殊性,以国际焊接学会IIW标准中疲劳设计规范提供的焊接接头S-N曲线数据库为依据,利用Palmgren-Miner累积损伤法则,对该转向架焊接构架进行了疲劳寿命预测。
短句来源
     For creep-fatigue life prediction under condition of the tension-tensile stress inthe past,in the most case,the Linear Cumulative Damage Rule was adopted.
     拉-拉应力条件下蠕变疲劳寿命预测,过去,在大多数情况下,采用线性累积损伤法则
短句来源
     The linear damage rule was applied to predict the life of cc type cycle that contains both tensile creep and compressive creep.
     对同时包含拉/压蠕变的循环,采用线性累积损伤法则预测其寿命。
短句来源
  damage rules
     APPLICATION OF DAMAGE RULES TO TIME-DEPENDENT FATIGUE LIFE PREDICTION
     损伤法则在时间相关疲劳寿命预测中的应用
短句来源
  “损伤法则”译为未确定词的双语例句
     On the assumption that Miner's linear cumulative damage theory may be applicable to machine parts under the random loading,and based on the theory analyses of random process,this paper introduced some parameters such as the plastic strain energy was absorbed by materials sand damage degree.
     在假定 Miner 线性累积损伤理论对于受随机载荷的零构件可以适用的前提下,在随机理论分析基础上,引入材料所吸收的塑性应变能和损伤度等参量,在等能量损伤法则下推算出稳态条件下随机载荷的等价常幅应力,推出随机载荷下的期望寿命估算公式。
短句来源
     Based on weld joint S-N curves provided by IIW standard and dynamic stress spectrum tested on line,fatigue life prediction for weld frame of speed-up bogie is conducted.
     基于线路动应力测试得到的动应力谱,考虑焊接结构的特殊性,以国际焊接学会IIW标准中疲劳设计规范提供的焊接接头S-N曲线数据库为依据,利用Palmgren-M iner累积损伤法则,对某提速客车转向架焊接构架进行了疲劳寿命预测.
短句来源
     Modification of the Rule of Fatigue AccumulatingDamage by Fuzzy Mathematics Method
     模糊数学方法对疲劳累积损伤法则的修正
短句来源
     Based on the Palmgren Miner linear fatigue damage accumulation rule, a safety life estimate method is developed.
     提出了一种基于 Palmgren Miner 线性累积损伤法则的玻璃钢叶片安全寿命估计方法。
短句来源
     The model for the predictions assumes that the fatigue crack initiation period(N I) is the number of cycles for the initiation of a fatigue crack and its early growth and coalescence into a dominant fatigue crack. N I is estimated using strain-controlled fatigue data and the Palmgren-Miner linear damage cumulation rule through Knowledge of the local stress and strain response at the tip of the notch.
     该模型把疲劳裂纹起始寿命看成是疲劳裂纹萌生、早期生成并聚合成主疲劳裂纹的循环次数,利用应变控制疲劳数据和Palmgren_Miner 线性累积损伤法则以及缺口尖端局部应力应变响应知识计算的。
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  damage rule
A closed form reliability analysis is carried out, which is based on the limit state function formulated in terms of Miner's cumulative damage rule.
      
(c) Application of a linear damage rule individually to crack initiation and crack propagation.
      
(c) Application of a linear damage rule individually to crack initiation and crack propagation.
      
Practical implementation of the double linear damage rule and damage curve approach for treating cumulative fatigue damage
      
Simple procedures are presented for treating cumulative fatigue damage under complex loading history using either the Damage Curve concept or the Double Linear Damage Rule.
      
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  damage rules
Moreover, cumulative damage rules are needless, because the damage growth rate equation dD/dN is simply integrated over the various loading blocks.
      


This paper discusses the count methods used in the processing data of random load. The application of the irregularity factors of the oscillogram to classify the time history of random load is presented. According to the characteristics of the random loab which the farm machinery often meet with five representative count methods are chosen, and applied to the statistical treatments of the measured load curve. In accordance with the accumulated damage rule and the accumulated frequency curves, the principles...

This paper discusses the count methods used in the processing data of random load. The application of the irregularity factors of the oscillogram to classify the time history of random load is presented. According to the characteristics of the random loab which the farm machinery often meet with five representative count methods are chosen, and applied to the statistical treatments of the measured load curve. In accordance with the accumulated damage rule and the accumulated frequency curves, the principles of application of the five count methods are given.

本文阐述了随机载荷数据处理过程中所使用的计数方法。提出了用波形图的不规则性因数来分类随机载荷的时间历程,针对农业机械经常遇到的随机载荷,选用具有代表性的五种计数方法,对实测的载荷波形进行了统计处理。由累积频次曲线,按照累积损伤法則,给出五种计数方法的应用原则。

For creep-fatigue life prediction under condition of the tension-tensile stress inthe past,in the most case,the Linear Cumulative Damage Rule was adopted.However,a new me-thod was advaucecl in this paper,namely,Numerical Computational Appraoch of Strain EnergyPartitioning(SEP).The computing results shown that the numerical computational appraoch ofSEP has prevailed over other prediction method mentioned in the present paper.

拉-拉应力条件下蠕变疲劳寿命预测,过去,在大多数情况下,采用线性累积损伤法则。然而,本文提出一种新的方法即应变能区分法(SEP)的数值计算方法,计算结果显示出,SEP 的数值法优于文中叙述的其他预测方法。

By use of Monte-Carlo simulation and Hasofer and Linb's reliability index method and with the cumulative damage approach and the fracture mcchanics ap- proach. wc have analyzcd and calculard the fatigue failure probahility The maximum allowable stress of differrent safety index are obtained.

采用线性累积损伤法则与线弹性断裂力学研究途径对近海结构管状焊接接头疲劳失效概率进行了分析与计算。还得到对应于不同安全性指标下的最大允许用应力。

 
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