疲劳

Strain fatigue life in pearlite is longer than that in tempered sorbite with same tensile strength, which can be attributed to the small plastic strains in pearlite.

轨钢的应变疲劳是塑性应变控制过程，抗拉强度相等时，珠光体的应变疲劳寿命高于回火索氏体的疲劳寿命，其原因在于珠光体具有较小的塑性应变幅。

The uncertain parameters of cylindrical spiral spring fatigue strengthen analysis are analyzed and described as interval variables, and an interval analysis model is established, and the non-probabilistic reliability index of cylindrical spiral spring fatigue strengthen is presented.

分析圆柱螺旋弹簧疲劳强度分析中的不确定性，将圆柱螺旋弹簧设计中不确定参数描述为区间变量，建立圆柱螺旋弹簧疲劳强度非概率可靠性分析的区间模型，提出圆柱螺旋弹簧疲劳强度非概率可靠性的指标。

After shape memory treatment at 673～773K,the transformation type of this alloy was .The Ti-Ni SMA spiral spring had longer fatigue limit when heat treatment at 773K.The fatigue ...

结果表明，在 673～ 773K热处理状态下，该合金的相变类型为，经 773K热处理后，弹簧有较高的疲劳寿命；用冷加工率较小的Ti Ni丝绕制的弹簧疲劳寿命较高；喷丸处理可有效提高该弹簧的疲劳寿命。

Because the portal frame is also used in the rig for bogie fatigue strength testing, in which the imposed load is harmonic, the modal analysis is necessary. The fundamental vibration mode shapes and corresponding frequencies are calculated to validating that the natural frequencies of the structure have enough difference comparing to the load frequency, so sympathetic vibration can be avoided.

由于龙门架还要在疲劳试验台中用来进行转向架的疲劳试验，因此对龙门架进行了模态分析，计算龙门架结构的固有频率和振型，确保龙门架的固有频率远离转向架疲劳试验的加载频率，避免在试验中发生共振。

Based on the fatigue test results of SAE 1045 medium carbon steel,the multi-axial fatigue life predication models for different ratios of torsional nominal stress amplitude to the axial one are studied respectively.

基于SAE 1045中碳钢的单-多轴疲劳试验结果，在研究了扭转名义应力幅与拉伸名义应力幅不同比值时的多轴疲劳寿命预测模型之后，建立了统一的多轴疲劳寿命预测模型。

Results The factors into the multiple regression model of physical fatigue include character and emotion.The factors into the multiple regression model of mental fatigue include obsession.The factors into the multiple regression model of total fatigue include character and emotion.

结果 进入躯体疲劳多元逐步回归模型的因素有性格和情绪，进入脑力疲劳多元逐步回归模型的因素有强迫症，进入疲劳总分多元逐步回归模型的因素有情绪和性格。

The present work focuses on delamintion failure of two-ply steel cord-rubber composite . The growth of fatigue damage, the modes of fatigue failure, the effect factors on fatigue life, the hysteretic loss and the variation of temperature are studied in detail.

因此，本文采用双层钢丝帘线／橡胶复合材料，重点研究了材料在循环载荷作用下的脱层破坏，对疲劳损伤的扩展、疲劳破坏模式、疲劳寿命影响因素、滞后损失和温升特性进行了详细分析。

The fatigue test of CFRP bars was carried out at the different cyclic stress, choose the 70% ultimate tensile stress of CFRP bar as the maximum cyclic stress, under the cyclic ratios of R=0.5 （the minimum-to-maximum stress ratio） and R=0 and the fatigue behavior of CFRP bars was investigated.

进行了不同循环应力下CFRP筋的常温疲劳试验，选取CFRP筋70％的极限拉伸应力作为最大循环应力，在R=0.5（最小循环应力与最大循环应力的比）和R=0的应力率下，测量了CFRP筋的疲劳寿命曲线，研究了CFRP筋的疲劳性能。

Had taken 10 old course when network game, game player group has matured and already developed almost to use up, hit unendingly at the same time upgrade to had made game player aesthetic and fatigue quite, and the core cohesive affinity that this kind of exhaustion will affect game finally, the net swims the enterprise should be blended in game more at the moment in, let game become truly significant recreation, eliminate aesthetic exhaustion of the player thereby, realize what the net swims to be able to develop continuously.

当网络游戏走过10多年历程，游戏玩家群体已经成熟并已开发殆尽，同时无休止的打怪升级已经让游戏玩家审美疲劳，而这种疲劳最终将影响到游戏的核心凝聚力，网游企业此刻更应该将文化概念融入到游戏之中，让游戏成为真正有意义的娱乐，从而消除玩家的审美疲劳，实现网游的可持续发展。

The accoustic emission induced by multi-pulse laser thermal shock was acquisited and used to determine the damage fatigue threshold and fatigue threshold.

根据声发射信号确定了不同载荷作用下的激光热疲劳损伤阈值和热疲劳寿命；用超声的方法确定了PMMC的激光热-力疲劳损伤参数。

Means the parent directory, so this command means to execute "toolchain.sh," which is in the current directory.

代表父目录，所以这个命令就是执行当前目录下的"toolchain.sh"。

Yes,In fact,I'm on our city ream.

是的。事实上我是我们市队的。