Photonic crystal damping material plate
A technology of phononic crystals and damping materials, which is applied in the direction of lamination devices, laminations, and layered products, etc., can solve the problems of phononic crystals controlling low frequencies, achieve convenient use, reduce the risk of first-order resonance, and improve comfort. and safety effects
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[0036] Example 1
[0037] Suppose a 0.5mm thick aluminum sheet is selected to make the phononic crystal structure layer, the mass unit is circular, with a diameter of 35mm; when the length of the elastic unit is 15mm and the width is 5mm, the hole diameter is 45mm, and the phononic crystal structure layer unit is arranged with 4 holes, with a spacing of 20mm, magnetic The thickness of the damping layer is 1.5mm, and the thickness of the hot-melt damping layer is 1mm. In this state, the equivalent mass of the phononic crystal structure layer is 1.41g, the equivalent stiffness of the phononic crystal structure layer is 112233.47N / m, and the forbidden band frequency is 45Hz.
Example Embodiment
[0038] Example 2
[0039] Under the overall design state of Example 1, by adding 0.9g of aluminum sheet (thickness 0.5mm) to the mass unit, the equivalent mass is 2.31g, the equivalent stiffness is 112233.47N / m, and the band gap frequency is 35Hz .
Example Embodiment
[0040] Example 3
[0041] In the overall design state of Example 1, by adding 1.1g of aluminum sheet (thickness 0.5mm) to the mass unit, the equivalent mass is 2.51g, the equivalent stiffness is 112233.47N / m, and the forbidden band frequency is 34Hz.
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