Marine Cabin Wall Air Gap Vibration Decoupling
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Solution Overview
Problem
Construction elements in ships face challenges in reducing noise pollution due to vibration transmission, which is not optimally addressed by current insulation methods that compromise acoustic insulation of low frequencies.
Innovation Solution
Incorporating an air gap between the thermally and acoustically insulating material and the metal wall, with an abutment member such as a bent rod or washer to decouple the two, thereby reducing vibration transmission and noise pollution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If the density of the thermally and/or acoustically insulating material is increased to reduce noise pollution, then vibration transmission is reduced, but sound insulation of low frequencies deteriorates
Solution Approach 1:
An air gap is introduced as an intermediary layer between the metal wall and the insulating material. This air gap acts as a decoupling element that interrupts the vibration transmission path from the wall to the insulating material, thereby reducing noise pollution without requiring increased material density that would harm low-frequency sound insulation.
Solution Approach 2:
The construction element is segmented into distinct layers: the metal wall, the air gap, and the insulating material. This segmentation creates physical separation that breaks the continuous vibration transmission path, allowing each layer to perform its specific function independently - the wall provides structural support, the air gap provides vibration decoupling, and the insulating material provides thermal and acoustic insulation.
2Object-generated harmful factors
If an air gap is introduced between the wall and the insulating material to reduce vibration transmission, then noise pollution is reduced, but the structural coupling is weakened
Solution Approach 1:
The air gap serves as a mediator that provides acoustic and vibrational isolation while allowing the structural components to remain functionally connected through the insulating material that is secured to the wall via rods, maintaining structural integrity without direct rigid coupling.
Solution Approach 2:
The insulating material acts as a flexible element that can accommodate the air gap while still providing structural connection. The material's flexibility allows it to bridge the air gap and maintain attachment to the wall through the rods, preserving structural coupling while enabling vibration decoupling.
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
Significantly reduces noise pollution by decoupling the wall from the insulating material, while maintaining effective thermal and acoustic insulation, and preventing chimney effects in case of fires.
Implementation Method 1
The presence of an air gap between the wall and the layer of thermally and/or acoustically insulating material makes it possible to decouple this wall from this layer of thermally and/or acoustically insulating material, and thus significantly reduce the transmission of vibrations
Implementation Method 2
at least one layer (130) of a thermally and/or acoustically insulating material
Implementation Method 3
at least one layer (130) of a thermally and/or acoustically insulating material
Data Source
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AI summary
The present invention relates to a construction element (100) for a marine cabin, comprising at least one wall (110), at least one layer of a thermally and/or acoustically insulating material (130), the at least one layer of the thermally and/or acoustically insulating material (130) being traversed by a rod (120) integral with the wall (110), an air gap (140) being provided between the wall (110) and the at least one layer of the thermally and/or acoustically insulating material (130), characterized in that at least one stop member (150) is provided on the rod (120), this at least one stop member (150) generating the air gap (140).