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为考察某部件在随机振动下的疲劳可靠性,基于随机振动疲劳分析方法,依据标准IEC 61373-2010,采用有限元软件ABAQUS对其进行随机振动仿真计算,对其应力薄弱位置进行疲劳损伤评估,再结合实测数据对比分析有无车轮多边形的影响。结果表明:依据标准和无车轮多边形情况下,部件损伤小于1,满足安全运用要求,且用标准评估相对保守;车轮存在高阶多边形情况下,部件损伤大于1,不满足安全运用要求。.
In order to investigate the fatigue reliability of a component under random vibration, based on the random vibration fatigue analysis method, according to the standard IEC 61373-2010, the finite element software ABAQUS was used to carry out the random vibration simulation calculation to evaluate the fatigue damage of the component in the place of weak stress. Combined with the measured data to compare the presence or absence of wheel polygon. The results show that the damage is less than 1 according to the standard and the wheelless polygon, which meets the requirements of safe operation and is relatively conservative with the standard evaluation. In the case of high-order polygons, the damage of the part is greater than 1, which does not meet the requirements of safe operation. .