The investigation shows that the vertical shaft of the front fork is subject to fatigue flaw due to the cyclic stress, which leads to the fracture of the vertical shaft.
研究结果表明，前叉立管在周期应力作用的环境中使用，非常容易形成疲劳裂纹，由此导致了摩托车前叉立管的断裂现象。
The effects of quenched-in crystallites on the cyclic fatigue fracture of Zr-Al-Ni-Cu bulk amorphous alloy were investigated.
研究了带有淬态晶相块体非晶合金的对称循环疲劳断裂。
Moreover, the irreversible plastic deformation of rock increased, and at the same time, the fracture deformation of rock gradually increased, which was produced by cyclic load.
岩石的不可逆塑性变形随动应变增加而增大，同时由循环荷载引起的损伤变形也逐渐增加。
According to structural mechanics of cyclic fracturing length and the cyclic weighting interval for the rock beam fracture, Mechanical models and the motion equation are established.
根据岩梁周期裂断步距与周期来压步距的力学结构，建立了各自的力学模型，推导其运动方程。
According to structural mechanics of cyclic fracturing length and the cyclic weighting interval for the rock beam fracture, Mechanical models and the motion equation are established.
根据岩梁周期裂断步距与周期来压步距的力学结构，建立了各自的力学模型，推导其运动方程。
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