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LARGE SCALE EXPERIMENTAL MODAL TESTS: HOW AND WHY BUILDING A MODAL MODEL OF 200 MODES FOR 2000 DOFS?

机译:大规模实验模态测试:如何以及为何构建2000 DOF的200个模式的模态模型?

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摘要

This paper discusses various aspects of large scale experimental modal tests. As an example, a modal test on a passenger's car body-in-white is described. A modal model for its dynamic behaviour up to 240 Hz and in almost 2000 DOFs was derived experimentally. Practical problems during the data acquisition and modal parameter extraction phases are discussed. Furthermore, it describes some typical applications for such large scale tests, illustrated by experimental examples.
机译:本文讨论了大规模实验模态测试的各个方面。例如,描述了在乘客车身上的模态测试。实际推出了高达240 Hz和近2000分的动态行为的模型模型。讨论了数据采集和模态参数提取阶段的实际问题。此外,它描述了通过实验实施例所示的这种大规模测试的一些典型应用。

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