Monolithic Multi-Layer Structure for Impact Absorption
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Solution Overview
Problem
Conventional impact-resistant structures composed of multiple materials face manufacturing complications and inherent weaknesses due to material separation over time, leading to reduced performance and potential failure.
Innovation Solution
A mono-structure comprising multiple layers with molecular continuity, where each layer has distinct mechanical properties, such as hardness or elastic modulus, formed from the same polymer material, providing a single-piece, cast structure that maintains structural integrity and absorbs impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If multiple materials are joined together to create impact-resistant structures, then the mechanical properties can be optimized for both damping performance and structural integrity, but the manufacturing process becomes more complex and the structure may separate over time
Solution Approach 1:
The patent merges multiple materials into a single monolithic structure where different regions exhibit different mechanical properties. This is achieved by using a single material (such as a polymer or metal) with spatially varying properties, eliminating the need for joining multiple materials while maintaining the benefits of optimized damping and structural integrity in different zones of the structure.
Solution Approach 2:
The patent applies local quality by creating regions within the monolithic structure that have different mechanical properties tailored to specific functional requirements. For example, certain regions may have higher density or stiffness for structural support, while other regions have lower density for energy absorption, all within a single continuous material structure.
2Reliability
If multiple materials are joined together to create impact-resistant structures, then the damping performance and structural integrity can be optimized, but the structure may separate over time reducing performance
Solution Approach 1:
The patent eliminates material separation by combining multiple materials into a single monolithic structure. The continuous material throughout the structure ensures no interfaces exist where separation could occur, thereby maintaining reliability and durability over time while preserving the optimized damping and structural properties.
3Ease of manufacture
If a single material is used throughout the structure, then manufacturing is simplified and structural integrity is maintained, but the ability to optimize different mechanical properties in different regions is limited
Solution Approach 1:
The patent resolves this contradiction by implementing local quality within a monolithic structure. Different regions of the single material are engineered to have different mechanical properties (such as varying density, stiffness, or damping characteristics) through controlled variations in the material's microstructure or composition during manufacturing, allowing regional optimization while maintaining manufacturing simplicity and structural integrity.
Data Source
AI summary
A mono-structure including a first layer and a second layer. The first layer has molecular continuity with the second layer. Each of the first layer and second layer have a characteristic mechanical property. The value of the characteristic mechanical property of the first layer is different to the value of the characteristic mechanical property of the second layer.