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- W2956077909 abstract "Multi-axis testing is growing in popularity in the testing community due to its ability to better match a complex three-dimensional excitation than a single-axis shaker test. However, with the ability to put a large number of shakers anywhere on the structure, the design space of such a test is enormous. This paper aims to investigate strategies for placement of shakers for a given test using a complex aerospace structure controlled to real environment data. Initially shakers are placed using engineering judgement, and this was found to perform reasonably well. To find shaker setups that improved upon engineering judgement, impact testing was performed at a large number of candidate excitation locations to generate frequency response functions that could be used to perform virtual control studies. In this way, a large number of shaker positions could be evaluated without needing to reposition the shakers each time. A brute force computation of all possible shaker setups was performed to find the set with the lowest error, but the computational cost of this approach is prohibitive for very large candidate shaker sets. Instead, an iterative approach was derived that found a suboptimal set that was nearly as good as the brute force calculation. Finally, an investigation into the number of shakers used for control was performed, which could help determine how many shakers might be necessary to perform a given test." @default.
- W2956077909 created "2019-07-12" @default.
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- W2956077909 date "2019-05-04" @default.
- W2956077909 modified "2023-09-24" @default.
- W2956077909 title "Strategies for Shaker Placement for Impedance-Matched Multi-Axis Testing" @default.
- W2956077909 cites W1973506511 @default.
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- W2956077909 doi "https://doi.org/10.1007/978-3-030-12676-6_18" @default.
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