Deformable Metallic Profile for Vehicle Impact Energy Absorption
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current vehicle containment systems for frontal impacts lack optimal energy absorption efficiency, durability, cost-effectiveness, and ease of repair, with existing solutions often being variable and prone to excessive deceleration or deformation, which can lead to injuries and increased maintenance costs.
Innovation Solution
A system comprising a wedge-shaped impact ram and a deformable metallic profile, where the ram is attached to a structural element that can move longitudinally along a statically fixed profile, causing progressive plastic deformation to absorb kinetic energy, with a longitudinal guide profile ensuring controlled deceleration and modular design for adjustable resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional energy absorption mechanisms (foam, airbags, plastic blocks) are used, then initial energy absorption is achieved, but durability and stable behavior over time are insufficient
Solution Approach 1:
The patent changes the material parameter from soft compressible materials (foam, plastic) to metallic material with controlled mechanical properties. The metallic profile maintains stable behavioral parameters (force-deformation characteristics) over time and across temperature variations, resolving the reliability issue while achieving durability through the inherent stability of metal properties.
Solution Approach 2:
The system combines the metallic deformable profile with the existing structural frame and energy absorption mechanisms, creating a composite structure that leverages the durability and stability of metal while maintaining the overall system's energy absorption function. This composite approach resolves the contradiction between new material properties and existing system requirements.
2Reliability
If complex energy absorption mechanisms are used to improve energy absorption efficiency, then better energy absorption is achieved, but manufacturing cost increases
Solution Approach 1:
The patent simplifies the energy absorption mechanism by changing from complex multi-component systems (airbags, foam, plastic blocks with metallic frames) to a single metallic deformable profile. This parameter change reduces manufacturing complexity and cost while maintaining reliable energy absorption through the metal's inherent deformability and energy dissipation properties.
3Loss of energy
If high energy absorption capacity is achieved through existing mechanisms, then kinetic energy is absorbed, but the system lacks durability and requires frequent replacement
Solution Approach 1:
The patent changes the material parameter from non-durable materials (foam, airbags, plastic) to durable metallic material. The metallic profile absorbs kinetic energy through controlled plastic deformation while maintaining structural integrity and durability, resolving the contradiction between energy absorption capacity and useful life.
4Adaptability or versatility
If variable energy absorption mechanisms are used, then adaptability to different impacts is achieved, but manufacturing precision and control become difficult
Solution Approach 1:
The patent achieves adaptability through changes in the deformation parameters of the metallic profile (geometry, cross-section, thickness) rather than through complex variable mechanisms. This approach maintains manufacturing precision and control while providing adaptability to different impact conditions through the metal's controlled plastic deformation behavior.
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 system achieves better controlled energy absorption, increased durability, lower costs, and easier repair, ensuring safe and efficient deceleration of vehicles while maintaining structural integrity and adaptability to varying impact conditions.
Implementation Method 1
the wedge-shaped forward part of the ram functioning as an attack surface producing plastic deformations propagating along the deformable profile
Data Source
Figure 1a~1b
Figure 2a~2b
Figure 3
AI summary
Mechanism for the absorption of the kinetic energy of a vehicle frontally impacting against a containment system, such as an impact attenuator or barrier terminal, by means of the longitudinal propagation of the plastic deformation of one or more longitudinal deformable metallic profiles produced by means of a rigid ram which is displaced along the deformable profile, intercepting part of its cross-section, joined to a structural element of the system which receives and transmits the impact of the vehicle being displaced along the containment system, the deformable profile being directly or indirectly fixed to the ground and therefore remaining static during the impact.