What is it about?
Plates are often used in engineering structures, both large and small. Based on their dimensions and material properties, the plate will hate natural frequencies of vibrations. In some applications (such as a musical instrument), it is desired to design the plate to have certain chosen frequencies of vibrations. This article examines if this is doable with the addition of a brace. The short answer is yes but with a flat brace only one frequency can be controlled.
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Why is it important?
This article gives a scientific analysis and explanation as to why luthiers (guitar builders) have been shaping their braces for years. With a flat brace, you can only control one frequency of the plate-brace combination. With a scalloped brace, several frequencies can be simultaneously controlled with the one brace.
Perspectives
In this article, we finally demonstrate analytically what luthiers have long known heurestically. It turns out that scalloping a brace gives a luthier greater control over several frequencies with only a single brace by changing the shape of the brace.
Natalie Baddour
University of Ottawa
Read the Original
This page is a summary of: Can a brace be used to control the frequencies of a plate?, SpringerPlus, October 2013, Springer Science + Business Media,
DOI: 10.1186/2193-1801-2-558.
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