Double-Layer Vehicle Panel Ribs for Collision Energy Absorption
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Solution Overview
Problem
Existing vehicle panel structures face challenges in balancing collision safety performance and lightweight requirements, as they often fail to efficiently absorb energy during collisions due to deformation patterns that lead to a decrease in load-bearing capacity.
Innovation Solution
A double-layer panel structure with concave and convex ribs formed in a concavo-convex pattern, where ribs on each layer overlap and deform in opposite directions, allowing for controlled deformation and secondary collisions to increase energy absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a panel with large cross-section is used in the frame structure, then the structure can be lightweight, but the energy absorption capability during collision decreases
Solution Approach 1:
The patent applies curvature by forming convex and concave ribs on the panel surfaces. These curved rib structures guide the deformation path during collision, creating a more efficient energy absorption mechanism that prevents premature load reduction while maintaining the lightweight benefit of large cross-section panels.
Solution Approach 2:
The panel is segmented into multiple regions by the convex and concave ribs, creating a structured deformation pattern. This segmentation allows the panel to absorb energy through controlled progressive deformation across multiple segments rather than uniform crushing, thereby improving energy absorption capability while maintaining lightweight design.
2Loss of energy
If reinforcement ribs are added to the panel surface to improve collision performance, then energy absorption increases, but the structure complexity increases
Solution Approach 1:
The patent merges the reinforcement function with the panel surface itself by forming convex and concave ribs directly on the panel. This integration eliminates the need for separate reinforcement structures, reducing overall complexity while achieving improved energy absorption through the ribbed surface geometry.
Solution Approach 2:
The curved rib structures serve dual purposes: they reinforce the panel against deformation while simultaneously guiding the collision energy through controlled deformation paths. This curvature-based design achieves reinforcement without adding complex rigid support structures.
3Loss of energy
If the panel structure deforms during collision, then energy is absorbed, but the load-bearing capacity decreases after initial deformation
Solution Approach 1:
The convex and concave ribs create a curved deformation path that progresses through the panel structure in a controlled manner. This curvature-guided deformation prevents sudden collapse and maintains load-bearing capacity throughout the energy absorption process, allowing the structure to continue absorbing energy without premature load reduction.
Solution Approach 2:
The ribbed structure enables dynamic deformation behavior where the panel adapts its stiffness during collision. The convex and concave ribs allow the structure to progress through different deformation stages, maintaining optimal load-bearing capacity throughout the energy absorption process rather than experiencing sudden strength loss.
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 structure efficiently absorbs energy during collisions by stabilizing deformation and increasing load-bearing capacity, achieving both high energy absorption and lightweight design.
Implementation Method 1
the panel has concave ribs and convex ribs formed to be concavo-convex in a normal direction of the panel... when one of the corresponding first ribs and second ribs is one of the concave ribs and the convex ribs, the other one of the corresponding first ribs and second ribs is the other one of the concave ribs and the convex ribs
Implementation Method 2
by forming catenary-shaped concave ribs or convex ribs (circular curved concave ribs or convex ribs), the panel may move stably and significantly, triggering secondary collisions between the first panel and the second panel
Data Source
AI summary
A vehicle panel structure includes a panel, formed by a double-layer panel structure having a first panel and a second panel, where the panel has concave ribs and convex ribs formed to be concavo-convex in a normal direction of the panel, the concave ribs or the convex ribs formed on the first panel are first ribs, the concave ribs or the convex ribs formed on the second panel are second ribs, each first rib and each second rib correspond to each other respectively, and overlap in the normal direction of the panel, and when one of the corresponding first ribs and second ribs is one of the concave ribs and the convex ribs, the other one of the corresponding first ribs and second ribs is the other one of the concave ribs and the convex ribs.