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本文根据Miner的线性累积损伤原理和钎杆的工作载荷谱进行了钎杆的疲劳寿命估测,分析了材料特性和应力波峰值分布特性对疲劳损伤的影响,提出了钎杆疲劳寿命的电算程序,计算和实测结果基本相符。
According to the principle of linear cumulative damage of Miner and the work load spectrum of drill rod, the fatigue life of drill rod is estimated. The influence of material properties and the distribution of stress wave peak on the fatigue damage is analyzed. The fatigue life of drill rod is calculated Program, calculated and measured results are basically consistent.