UHMWPE Bumper Absorbs Impact to Prevent ATV Frame Damage
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Solution Overview
Problem
Existing ATV bumpers either damage the vehicle's frame due to rigidity or require frequent replacement as they are designed to be indestructible, posing financial and time-consuming challenges.
Innovation Solution
A retrofitting bumper made of ultra-high-molecular weight polyethylene (UHMWPE) that absorbs impact force, preventing it from transferring to the ATV or rider, and features a collapsible design for reuse after impact, using a main structural bar and support bars attached to the ATV frame with a fastening mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a rigid bumper is used to protect the ATV from damage, then the protection capability is improved, but the frame of the ATV can be damaged upon impact
Solution Approach 1:
The bumper utilizes the viscoelastic properties of UHMWPE material, which allows it to exhibit both rigid and flexible characteristics depending on the timescale of the applied force. During impact, the material's molecular structure enables energy dissipation through viscous flow while maintaining structural integrity, thus protecting the frame without transferring excessive force
Solution Approach 2:
The invention employs ultra-high-molecular-weight polyethylene (UHMWPE), a specialized polymer material with unique properties combining high strength, toughness, and energy absorption capabilities. This material serves as a composite solution that integrates both protective rigidity and impact flexibility within a single bumper structure
2Object-affected harmful factors
If a foldable or breakable bumper is used to prevent frame damage, then the frame protection is improved, but the bumper requires frequent replacement
Solution Approach 1:
The UHMWPE material exhibits time-dependent mechanical behavior where it deforms viscoelastically during impact but recovers its original shape after the force is removed. This parameter change in material response allows the bumper to absorb impact energy without permanent deformation, eliminating the need for frequent replacement while maintaining frame protection
Solution Approach 2:
The bumper is designed to undergo controlled deformation during impact, converting the harmful kinetic energy into beneficial viscoelastic energy dissipation within the material structure. This controlled energy absorption protects the frame while the material's recovery properties ensure the bumper remains functional after impact
3Reliability
If an indestructible bumper is used to ensure bumper durability, then the reliability is improved, but the frame of the ATV can be damaged due to excessive force transfer
Solution Approach 1:
The UHMWPE material's viscoelastic parameters allow it to maintain structural integrity and resist destruction while simultaneously controlling force transmission. The material's molecular weight and chain structure enable it to absorb impact energy through internal friction and viscous flow, preventing both bumper failure and frame damage
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 UHMWPE bumper effectively absorbs impact forces, reducing the risk of frame damage and eliminating the need for frequent replacement, providing financial and time-saving benefits while ensuring rider and vehicle safety.
Implementation Method 1
the shape memory behavior of UHMWPE allows the user to reuse the present invention even after impact. When a force is applied on the main structural bar 1 by contacting an external surface, the UHMWPE creates a temporary shape by deforming the original shape of the main structural bar 1
Implementation Method 2
The shape memory behavior of UHMWPE allows the user to reuse the present invention even after impact. When an external stimulus is applied to the temporary shape, the main structural bar 1 undergoes a recovery process. The UHMWPE allows the original shape of the main structural bar 1 to be retained when the recovery process is complete
Data Source
AI summary
A retrofitting bumper that is intended to be used in motorsports and in the vehicular industry consists of a main structural bar, a first pair of support bars, and a second pair of support bars. Preferably, the main structural bar is manufactured from ultra-high-molecular-weight polyethylene (UHMWPE) so that the memory shape behavior allows the main structural bar to retain the original shape even after impact. The first pair of support bars and the second pair of support bars are terminally and angularly mounted along a structural body of the main structural bar. A fastening mechanism, a first pair of attachment brackets, and a second pair of attachment brackets are used to mount the main structural bar, the first pair of support bars, and the second pair of support bars onto the frame of the ATV.