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应用应力场强度理论,推导出随机扫描振动的应力函数和应力场强度,建立在500～2000 Hz频率段疲劳断裂寿命的经验计算模型。
Based on the theory of stress field strength, the stress function and stress field of random sweep vibration are deduced, and an empirical calculation model of fatigue fracture life at 500-2000 Hz is established.