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Combined analytical and experimental approaches to rotor components stress predictions

机译:分析和实验相结合的转子部件应力预测方法

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摘要

A combined analytical and experimental approach is introduced to estimate the dynamic response of complex systems from a limited number of measurements. The method is based on the concept that modal information is sufficient to extrapolate the complete map of the response from experimental data through the reconstruction of modal loads. The capabilities of the algorithm are first verified via well-controlled lab experiments on a thin-walled aluminium-rotor blade. Numerical results from a comprehensive UH-60 multibody model are then compared with available experimental data. Significant improvements in the accuracy of the predicted results are achieved when simple airloads models are employed as inputs.
机译:引入了组合的分析和实验方法,以通过有限的测量来估计复杂系统的动态响应。该方法基于以下概念:模态信息足以通过模态载荷的重构从实验数据中推断出完整的响应图。该算法的功能首先通过在薄壁铝转子叶片上进行良好控制的实验室实验来验证。然后将来自全面的UH-60多体模型的数值结果与可用的实验数据进行比较。当使用简单的空载模型作为输入时,可以大大提高预测结果的准确性。

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