Acoustic Mount With Convex Damper Geometry for Wide Load Damping
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Solution Overview
Problem
Existing acoustic mounts in the building industry exhibit ineffective sound damping at varying load ranges, particularly at light loads, due to their linear load-compression relationship, which requires multiple products for different applications and fails to provide adequate damping beyond specified load ranges.
Innovation Solution
The development of an acoustic mount featuring a vibration damper with elongated, resiliently compressible elements that reduce in cross-sectional area and possess a convex outer surface, exhibiting non-linear axial deflection characteristics, allowing effective vibration damping across a wide range of loadings, including light loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional resilient mounts with linear load-compression relationship are used, then the product is simple to manufacture and install, but the vibration damping effectiveness is poor at light loads and beyond specified load ranges
Solution Approach 1:
The damper element employs a convex curved outer surface (parabolic, elliptical, or spherical geometry) instead of a linear cylindrical shape. This curvature creates a non-linear load-compression relationship where the contact area between the damper and mounting surface changes progressively with compression, providing effective vibration damping across light to heavy load ranges without requiring multiple different products
Solution Approach 2:
The invention changes the geometric parameters of the damper element by using a convex surface profile that varies the contact area as a function of compression depth. This parameter change transforms the linear stiffness characteristic into a non-linear one, enabling the single damper design to adapt its effective stiffness to match varying load conditions and maintain reliable vibration damping performance
2Reliability
If multiple resilient mount products with different specifications are produced to cover different load ranges, then each product can be optimized for its specific application, but the device complexity and product range increases
Solution Approach 1:
The convex-shaped damper element is designed to perform multiple functions across different load ranges within a single product. The non-linear geometry allows the same damper to provide effective vibration damping whether supporting light plasterboard ceilings or heavier structural applications, eliminating the need for suppliers to produce multiple specialized products for different building construction scenarios
3Ease of operation
If resilient mounts are used beyond their optimum specified loading range, then installation flexibility increases, but ineffective sound damping occurs
Solution Approach 1:
The damper element's convex geometry creates a dynamic stiffness characteristic that adapts to the applied load. As the compression force increases, the contact area and effective stiffness change non-linearly, allowing the damper to maintain optimal vibration damping performance whether installed at light, medium, or heavy loads within its design range, providing installation flexibility without sacrificing sound damping reliability
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables effective vibration damping and isolation across a substantial range of loadings, accommodating various building constructions and reducing noise transmission, with a single product capable of covering over 95% of ceiling applications, unlike existing mounts that often require multiple products.
Implementation Method 1
the vibration damper being resiliently compressible in the axial direction
Implementation Method 2
so as to damp vibrations and thereby limit the transmission through the vibration damper of the vibrations in one of the structures to the other of the structures
Data Source
AI summary
An acoustic mount is described for damping vibrations between a primary structure of a building and a secondary structure of a building and which has a vibration damper interposed in use between the primary and secondary structures. The vibration damper is resiliently compressible in the axial direction and has at least one resiliently compressible damper element which is elongated in the axial direction so that the axial length of the damper element is greater than half of a transverse width thereof. The damper element reduces in cross sectional area in the axial direction; has a convex outer surface in planes containing the axial direction; and possesses non-linear axial deflection or compression characteristics under a range of static loading conditions enabling effective vibration damping or vibration isolation for a substantial range of loadings of the acoustic mount in use. Damper elements have a continuous convexity of outer surface extending to a tip and the continuous convex outer surface in a plane containing the axial direction has a curved shape defined by a quadratic equation, including segments of ellipses, parabolas, hyperbolas.