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First, the high modal density is controllable with the design modification of a pack component.
Modal density is an important parameter in Statistical Energy Analysis SEAA) based response estimation.
In each frequency band there exists a fibre orientation for which the modal density is minimized.
The modal density is shown to be insensitive to boundary conditions.
From this equation the expression for the modal density is derived.
Honeycomb plates are much stiffer than uniform plates of similar mass and consequently their modal density is relatively low.
Similar(45)
Systems with high modal density are characteristic of mid and high frequency problems where, for the sake of robustness, energy is often preferred to local response in order to describe the behavior of vibrating systems.
These effects persist over arbitrarily large frequency bands and are particularly strong when the modal densities are equal or when one is zero, rather less so when one is twice the other.
The critical input datum to the SEA model is the wind tunnel's modal density, which is calculated by the method presented.
A weighted multi-modal sampling density is used to account for the contribution of different regions in the sampling domain to the system failure probability.
The modal density, which is typically defined as the number of modes per unit Hertz in a frequency band, is a fundamental parameter when applying SEA.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com