基于当目标函数及相关运动学制约已经制定时的最大疲劳寿命。
Based on maximum fatigue life as objective function and associated kinematic constraints have been formulated.
疲劳寿命与最大应力近似呈对数线性关系。
The fatigue life was linear to the logarithmic maximum stress.
计算发现，夹杂物周围的最大剪切应力是不含夹杂物时的1.2～1.7倍，这对钢轨疲劳寿命造成有害影响。
The calculation indicates that the maximum shear stress around inclusion is 1.2-1.7 times of that without inclusion, which has a harmful effect on the fatigue endurance of rail.
结果表明：最大凹陷深度的增加使立管的疲劳寿命大大减少；
The results showed that:fatigue life significantly reduced as the maximum depth of dent increase;
根据疲劳试验结果，获得了TC 11钛合金焊接接头的疲劳特性，即最大加载应变与疲劳寿命的关系曲线。
According to the result of fatigue experiment, it gets fatigue traits of ti alloy TC11, which is the relationship curve of the maximum loading strain range with fatigue life.
最后分析在恒幅疲劳载荷作用下，不同的最大凹陷深度和凹陷影响区域的长度对楔形凹陷立管的疲劳寿命的影响。
Finally, the effect of different maximum depth and length of the dent on the fatigue life of dented riser under the constant amplitude fatigue loads was studied.
当弯曲试板上的最大应变等于波纹管的最大局部应变时，板的弯曲疲劳试验寿命即可代替波纹管的试验寿命。
The fatigue test of the bellows expansion joints is replaced by the bent fatigue test of plates when the maximum strain of bent test plates equals to the local strain of bellows expansion joints.
通过分析指出，高速运转机构的应力集中导致的疲劳对机构的寿命产生很大影响，减少最大应力和应力幅度能有效地延长机构的寿命。
The analysis shows that the stress convergence in high-speed machine would cause the machine fatigue and influence the life of the machine, the decrease of the maxim…
板簧专用应力抛丸机的使用，最大限度的提高了板簧的疲劳寿命；
And the stressing polishing machine for springs improves their anti-fagging ability and life-span.
板簧专用应力抛丸机的使用，最大限度的提高了板簧的疲劳寿命；
And the stressing polishing machine for springs improves their anti-fagging ability and life-span.
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