Barrier System Energy Absorption Layer Design
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Solution Overview
Problem
Existing barrier systems for roadways, such as go-kart tracks, have limited ability to absorb impact energy and lack a significant crumple zone or spring travel, posing safety concerns for spectators and vehicles.
Innovation Solution
A barrier system with an energy absorption layer formed from flat strips laid in loops or a meandering manner, incorporating styrene-butadiene rubber with a fabric insert, and a multi-layer structure including HDPE or metal/wooden panels, which allows adjustable energy distribution and prevents vehicle slipping, along with a honeycomb structure for enhanced absorption properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If traditional barrier systems are used, then the structure is simple and easy to install, but the ability to absorb impact energy is limited
Solution Approach 1:
The barrier system uses composite materials including HDPE (high-density polyethylene) for the main barrier body, fabric inserts for reinforcement, and foam or honeycomb structures for energy absorption. This multi-material composite approach enables effective impact energy absorption while maintaining structural integrity.
Solution Approach 2:
The energy absorption layer incorporates foam or honeycomb structures with porous characteristics. These porous materials compress during impact, providing progressive energy absorption over an extended distance, thereby increasing the crumple zone effect without significantly increasing overall barrier complexity.
2Reliability
If the barrier body is rigid to prevent vehicle slipping, then safety against slipping is improved, but the crumple zone and spring travel are reduced
Solution Approach 1:
The barrier body is segmented into distinct functional layers: a rigid outer shell for preventing vehicle slipping, and an inner energy absorption layer with foam or honeycomb structure for crumple zone formation. This segmentation allows each layer to perform its specific function optimally without compromising the other.
Solution Approach 2:
Different parts of the barrier system have different mechanical properties tailored to their specific functions. The outer barrier body is made rigid with fabric inserts to prevent slipping, while the inner energy absorption layer is designed to be compressible to provide crumple zone distance. This local differentiation of material properties resolves the contradiction between rigidity and crumple zone capability.
3Duration of action of moving object
If the energy absorption layer uses foam or honeycomb structure, then the crumple zone is extended, but the device complexity increases
Solution Approach 1:
Foam and honeycomb structures are used as the energy absorption layer. These porous materials provide extended spring travel and crumple zone distance through their cellular structure that compresses progressively during impact, absorbing energy over a longer duration and distance.
Solution Approach 2:
The energy absorption layer combines foam or honeycomb structures with the HDPE barrier body and fabric inserts to create a composite system. This integration allows the porous energy absorption materials to function effectively within the overall barrier structure without requiring separate complex systems.
4Reliability
If fabric insert is added to prevent vehicle slipping, then reliability is improved, but the manufacturing complexity increases
Solution Approach 1:
Fabric inserts are embedded within the HDPE barrier body to create a composite structure. The fabric provides reinforcement and increases friction to prevent vehicle slipping, while the HDPE matrix provides structural support. This composite approach integrates multiple functions into a single manufacturable component.
Solution Approach 2:
The fabric insert and HDPE barrier body are combined into a single integrated component. The fabric is embedded during the manufacturing process, merging the slipping prevention function with the structural barrier function, thereby reducing the need for separate components and simplifying assembly.
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 system effectively absorbs and distributes impact energy, providing a longer crumple zone and improved safety by preventing vehicle slipping, allowing for customizable energy absorption based on installation location and route characteristics.
Implementation Method 1
the energy absorption layer is formed from one or more flat strips laid in loops or in a meandering manner... a corresponding crumple zone can be formed by the loops or bands laid in a meandering manner, which can be pressed in over a long distance
Implementation Method 2
The fabric ply stiffens the belt in a preferred direction... prevents or counteracts a vehicle hitting the body of the gang from slipping under the body of the gang
Implementation Method 3
the energy absorption layer is formed at least in sections by foam and/or a honeycomb structure... the properties of the absorption of the energy can also preferably be adjusted subsequently
Data Source
Figure 1~2
Figure 3~5
Figure 6
AI summary
Barrier system comprising at least one barrier body (1) with at least one support foot (2), wherein the barrier body is equipped with at least one energy absorption layer (12).