Expandable Adhesive Pillar Reinforcement for Crash Stress
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Solution Overview
Problem
Vehicle pillars and roof sections experience significant stress and deformation during crashes, necessitating enhanced structural reinforcement, particularly at joints where existing reinforcements fail to provide adequate support.
Innovation Solution
A structural reinforcement system comprising a rigid polymeric structure with integrated expandable adhesive material and rib structures, where the expandable material expands and cures upon exposure to specific temperatures, providing additional support and stability to critical vehicle areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If structural reinforcements are added to vehicle pillars and roof sections, then crash resistance and structural integrity are improved, but device complexity and weight increase
Solution Approach 1:
The patent combines multiple functions into a single integrated reinforcement unit: the rigid polymeric structure provides mechanical support, while the expandable adhesive material integrated onto its surfaces provides both bonding and energy-absorbing functions. This merging eliminates the need for separate mounting brackets and adhesive applications, reducing overall complexity while maintaining strength.
Solution Approach 2:
The reinforcement system uses a composite structure combining rigid polymeric material with expandable adhesive material. This composite approach allows the structure to exhibit both high structural integrity from the rigid polymer and energy absorption/cushioning properties from the expandable material, achieving enhanced crash resistance without excessive weight or complexity.
2Strength
If expandable adhesive material is applied to surfaces, then bonding strength and energy absorption are improved, but manufacturing complexity increases
Solution Approach 1:
The expandable adhesive material is pre-applied and cured onto the rigid polymeric structure during the molding process, forming an integrated composite component. This preliminary action eliminates the need for separate adhesive application and curing steps in assembly, simplifying manufacturing while ensuring consistent bonding strength and energy absorption properties.
Solution Approach 2:
The manufacturing process merges the structural component fabrication with the adhesive material application into a single integrated molding operation. The expandable adhesive material is incorporated onto the rigid polymeric structure during forming, combining two manufacturing steps into one and reducing overall manufacturing complexity.
3Stability of the object's composition
If ribs are added to the polymeric structure, then structural stability and stress distribution are improved, but manufacturing complexity increases
Solution Approach 1:
The rigid polymeric structure is segmented into multiple ribs that extend along its length, creating discrete load-bearing elements. This segmentation distributes applied stresses across multiple ribs rather than concentrating them, enhancing structural stability and crash resistance while the ribs are formed as integral features during the molding process, avoiding additional manufacturing steps.
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 enhances the structural integrity of vehicle pillars and roof sections by distributing stress and preventing deformation, thereby improving crash resistance and safety.
Implementation Method 1
an expandable adhesive material located onto a portion of each of the top and bottom surface of each of the upper and lower portions
Implementation Method 2
the expandable material expands and cures upon exposure to specific temperatures
Data Source
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AI summary
A structural reinforcement comprising a rigid polymeric structure having a longitudinal axis and including a lower portion and an upper portion each of the lower and upper portions including a top surface and bottom surface, an expandable adhesive material located onto a portion of each of the top and bottom surface of each of the upper and lower portions, wherein the rigid polymeric stricture includes a plurality of ribs and the top edge of one or more of the ribs is co-planar with the expandable adhesive material prior to activation of the expandable adhesive material.