| 曲轴疲劳裂纹扩展模式的时序方法预测 |
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| 引用本文： | 周迅,俞小莉.曲轴疲劳裂纹扩展模式的时序方法预测[J].农业机械学报,2007,38(9):163-167. |
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| 作者姓名： | 周迅 俞小莉 |
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| 作者单位： | 1. 浙江大学动力机械与车辆工程研究所
2. 浙江大学动力机械与车辆工程研究所所长 |
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| 摘 要： | 在外界载荷和构件内部材料特性的共同作用下,机械构件的疲劳裂纹的扩展行为往往具有阶段性,在不同的阶段内伴随不同的行为特性。为了研究这种阶段性并对这种阶段性进行预测,对曲轴疲劳试验过程中谐振台架的振动加速度进行了测录,并采用经典时序方法对这一监测信号进行建模,计算了其在各个时间段中的异常度曲线。与曲轴疲劳裂纹扩展速率曲线进行对比,结果表明时序方法对裂纹扩展模式具有一定的预测能力。
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| 关 键 词： | 曲轴 疲劳裂纹 预测 时序方法 |
| 修稿时间： | 2006-06-05 |
Prediction of Crankshaft Fatigue Crack Growth Pattern by Time Series Analysis |
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| Zhou Xun,Yu Xiaoli.Prediction of Crankshaft Fatigue Crack Growth Pattern by Time Series Analysis[J].Transactions of the Chinese Society of Agricultural Machinery,2007,38(9):163-167. |
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| Authors: | Zhou Xun Yu Xiaoli |
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| Institution: | Zhejiang University |
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| Abstract: | By the influence of the environmental loads and the material characters, propagations of mechanical components' fatigue cracks usually have stage act. In each stage, the cracks propagate with different behavior features. For studying the behavior features and getting a method to predicting the stage transition, time series analysis method was utilized to process the vibration acceleration data, which were recorded to make identification and prediction for the fatigue crack growth behavior patterns in the fatigue test of engine crankshafts. By comparing with the test results of crack growth rate, the prediction capability of the time series analysis method for crack growth behavior pattern was verified. |
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| Keywords: | Crankshaft Fatigue crack Prediction Time series analysis method |
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