But the common linear fatigue damage cumulative rule neglects the fatigue damage which is brought by the high frequency and low stress.
一般的线性损伤累积理论忽略了高频率低疲劳应力所引起的构件疲劳损伤，致使预测结果与实际寿命相差很大。
New type of precision cropping machine utilizes variant frequency vibration to crop bar precisely with low stress.
新型下料机是利用变频振动实现低应力精密下料的。
A new type of precision cropping machine utilizes variant frequency vibration to crop bar precisely with low stress, an system of measure and control of vibration in the machine is necessary.
新型下料机是利用变频振动实现低应力下料的，针对需要建立振动的有效测控系统的问题。
Low frequency stress wave does more damage.
低频波比高频波的危害更大。
Based on the orthogonal test design, this paper studied the effect of low cycle stress, high-low cycle stress ratio , high cycle number and high cycle frequency on complex fatigue life.
在高低周复合疲劳研究中采用了正交试验设计的方法，并以此为基础综合研究了低周应力、高低周应力比、高周循环次数和高周循环频率对复合疲劳寿命的影响及其机理。
The main reason of inclined pipe fracture was low frequency stress fatigue failure at temperature field.
斜管开裂的主要原因是温度场下的低频应力疲劳破坏。
The main reason of inclined pipe fracture was low frequency stress fatigue failure at temperature field.
斜管开裂的主要原因是温度场下的低频应力疲劳破坏。
应用推荐