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首页> 外文期刊>JSME International Journal. Series C, Mechanical Systems, Machine Elements and Manufacturing >Uncertainty in Cross Orthogonality Checks
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Uncertainty in Cross Orthogonality Checks

机译：交叉正交检查的不确定性

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摘要

Finite element structural dynamic models are typically validated using data obtained from a modal testing. Although it is known that test variability may affect the verification, the test variability is typically ignored in the verification process. This paper describes the sensitivities of cross orthogonality check to the test variability. The cross orthogonality check is one of correlation techniques which is gaining acceptance in the structural dynamics community, because of its improved accuracy over the standard modal assurance criterion. Then an uncertainty index of the cross orthogonality check is proposed based on the fact that the sensitivities are much dependent on sensor placement. The results of some artificially generated test cases are presented to demonstrate the applicability of the proposed approach.
机译：通常使用从模态测试获得的数据来验证有限元结构动力学模型。尽管已知测试可变性可能会影响验证，但通常在验证过程中会忽略测试可变性。本文介绍了正交检验对测试变异性的敏感性。交叉正交检查是一种相关的技术，由于其相对于标准模态保证标准的更高的准确性而在结构动力学界得到认可。然后基于灵敏度很大程度上取决于传感器放置的事实，提出了正交正交检查的不确定性指标。提出了一些人工生成的测试用例的结果，以证明所提出方法的适用性。

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