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首页> 外文期刊>Zeitschrift fur Angewandte Mathematik und Mechanik >Numerical methods for parametric model reduction in the simulation of disk brake squeal
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Numerical methods for parametric model reduction in the simulation of disk brake squeal

机译:盘式制动器尖叫仿真中参数化模型简化的数值方法。

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摘要

We present numerical methods for model reduction in the numerical simulation of disk brake squeal. Automotive disk brake squeal is a high frequency noise phenomenon based on self excited vibrations. Our method is based on a variation of the proper orthogonal decomposition method and involves the solution of a large scale, parametric eigenvalue problem. Several important challenges arise, some of which can be traced back to the finite element modeling stage. Compared to the current industrial standard our new approach is more accurate in vibration prediction and achieves a better reduction in model size. This comes at the price of an increased computational cost, but it still gives useful results when the classical modal reduction method fails to do so. We illustrate the results with several numerical experiments, some from real industrial models, some from simpler academic models. These results indicate where improvements of the current black box industrial codes are advisable. (C) 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
机译:我们提出了在盘式制动器尖叫声数值模拟中用于模型简化的数值方法。汽车盘式制动器的尖叫声是基于自激振动的高频噪声现象。我们的方法基于适当的正交分解方法的变体,并且涉及大型参数化特征值问题的解决方案。出现了几个重要的挑战,其中一些挑战可以追溯到有限元建模阶段。与当前的工业标准相比,我们的新方法在振动预测方面更准确,并且可以更好地减小模型尺寸。这是以增加的计算成本为代价的,但是当经典模态归约方法无法做到这一点时,它仍然会提供有用的结果。我们通过一些数值实验来说明结果,其中一些实验来自真实的工业模型,一些实验来自简单的学术模型。这些结果表明,建议对当前的黑匣子工业法规进行改进。 (C)2016 WILEY-VCH Verlag GmbH&Co.KGaA,魏因海姆

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