起重机结构寿命的模拟估算
Prediction of Fatigue Life of Crane Structures
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摘要: 根据已有的试验和研究成果,总结推荐了桥门式起重机焊接箱形梁的疲劳参数取值。以等幅载荷疲劳 裂纹稳定扩展阶段的计算公式为基础,针对起重机承受随机载荷的特点,运用时间循环法,估算了桥门式起重机 焊接箱形梁的疲劳裂纹扩展寿命。Abstract: Based on test data and research achievement available in literature, the fatigue parameters of welded boxes of overhead and gantry cranes are recommended. By using the equations for the stable propagation period of constant amplitude loading fatigue cracks, the fatigue life of the welded box girders of bridge gantry cranes is estimated.
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Key words:
- welded structures /
- crack propagation /
- fatigue life /
- cranes
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