摘要:为了定位二级涡轮叶片疲劳危险部位,采用CATIA、ANSYSWorkbench和CFX软件对二级涡轮叶片进行建模、流场仿真,利用Newton迭代法和Manson-Coffin公式对叶片流-热-固多场耦合等效应力应变进行计算,预测了叶片疲劳寿命,确定了叶片疲劳危险部位,然后通过FatigueTool软件仿真验证了这一局部应力应变预测方法所得结果的合理性与可行性。这一预测方法为后期对叶片的实验研究、设计及优化提供参考。
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