Vibration Attenuating Resin Patch for Vehicle Panel Rigidity
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Solution Overview
Problem
Existing noise and vibration suppression methods for transportation vehicles, such as asphalt sheets and sheet-like metal members, either increase vehicle thickness and weight or fail to adequately improve vibration characteristics, leading to discomfort for occupants.
Innovation Solution
A panel member structure comprising a metal base plate and a patch member with a vibration attenuating resin layer, where the patch member is spot-welded to the base plate at specific deformation areas to enhance rigidity and attenuate vibrations without significantly increasing thickness or weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If an asphalt sheet is used to suppress noise and vibration, then the vibration suppression effect is improved, but the thickness and weight of the vehicle part are greatly increased
Solution Approach 1:
The invention uses a composite structure consisting of a metal base plate and a patch member with vibration attenuating resin layer. This composite material approach provides effective vibration suppression while maintaining reduced thickness and weight compared to conventional asphalt sheets alone.
Solution Approach 2:
The patch member is applied locally at specific positions on the base plate where vibration occurs, rather than covering the entire surface. This localized application of the vibration attenuating resin layer reduces overall material usage and weight while targeting specific vibration problems.
2Device complexity
If a sheet-like metal member is affixed on a dash panel to suppress noise, then the structure is simplified, but the vibration characteristic and rigidity are not sufficiently improved
Solution Approach 1:
The invention combines a metal base plate with a patch member containing vibration attenuating resin, creating a composite structure that provides both structural integrity and vibration suppression capabilities, overcoming the limitations of simple metal sheets.
Solution Approach 2:
The invention changes the material parameters by introducing a vibration attenuating resin layer with specific properties (viscoelastic characteristics) that dissipate vibration energy, thereby improving vibration suppression without significantly increasing overall complexity.
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
The solution effectively improves vibration characteristics of transportation vehicle parts by reducing noise and vibration transmission, maintaining a compact vehicle design while minimizing weight and thickness, thus enhancing occupant comfort.
Implementation Method 1
vibration can be attenuated by heat that is generated by deformation of the vibration attenuating resin layer
Implementation Method 2
by performing the spot welding on a main body and the patch member beforehand at a portion of the panel member to be deformed
Data Source
AI summary
A transportation vehicle part that includes: a patch member constructed of a plate-like metal patch panel, and a vibration attenuating resin layer provided along a surface of the patch panel; and a metal base plate closely adhered with the vibration attenuating resin layer of the patch member and affixed with the patch member; according to this configuration, the transportation vehicle part which has a superior vibration characteristic without greatly increasing the thickness and the weight of the transportation vehicle part is provided.