Multi-layer noise elimination/vibration reduction structure and method for manufacturing noise elimination/vibration reduction structure through 3D printing technology
A vibration-damping structure and technology, which is applied in the direction of gas shock absorbers, additive processing, etc., can solve the problems of narrow application fields of noise-absorbing/vibration-damping structures, and achieve a large sound absorption coefficient, not easy to aging, and broad application prospects Effect
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[0015] Specific embodiment one: combination figure 1 To illustrate this embodiment, the multi-layer noise reduction / vibration damping structure described in this embodiment includes a bottom plate (1), two side plates (2), multiple layers of longitudinal partition plates (3) of different heights, and multiple A horizontal partition plate (4), the bottom plate (1), side plate (2), longitudinal partition plate (3) and horizontal partition plate (4) are all metal-based materials, and the side plates (2) , Both the longitudinal partition plate (3) and the transverse partition plate (4) are provided with multiple micro holes;
[0016] Two side plates (2) are located on both sides of the bottom plate (1);
[0017] The longitudinal partition plate (3) is parallel to the side plate (2), and each layer of longitudinal partition plate (3) is equally spaced between the two side plates (2), and the two adjacent layers of longitudinal partition plate (3) The space is a horizontal partition pl...
Example Embodiment
[0019] Specific implementation manner two: combination figure 1 To explain this embodiment, this embodiment is a further limitation to the multi-layer noise reduction / vibration damping structure described in Embodiment 1. In this embodiment, the height of the multi-layer cavity decreases successively, and the width increases successively. .
Example Embodiment
[0020] Specific embodiment three: this embodiment is a further limitation of the multi-layer noise reduction / vibration damping structure described in the first and second embodiments. In this embodiment, the side plate (2) and the longitudinal partition plate (3) And the micro-holes on the transverse partition plate (4) include round holes and non-round holes, the hole diameter of the round holes is less than 1 or equal to mm, and the single hole area of the non-round holes is less than or equal to 0.785 mm 2 , The hole spacing is less than or equal to 17mm, and the porosity is 1%-10%.
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