Vehicle Body Assembling Structure Impact Load Distribution
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Solution Overview
Problem
Current vehicle body assembling structures are uneconomical and ineffective in distributing impact loads during collisions, as they rely on high-strength materials for all components, which increases manufacturing costs and does not adequately disperse impact forces to ensure passenger safety.
Innovation Solution
The proposed assembling structure includes side sill members, a dash cross member, reinforcing members, A-pillar members, and cowl beams, with varying thicknesses and materials to form annular structures that absorb and disperse impact forces, connecting center and side members to create efficient load paths and enhance safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high-strength materials are used for all components to improve safety, then passenger safety is improved, but manufacturing cost increases
Solution Approach 1:
The patent applies different material strengths to different components based on their specific safety requirements. High-strength materials are used for components that directly protect passengers (A-pillar, B-pillar, floor pan), while standard-strength materials are used for less critical components (dash cross member, cowl beam). This localized approach to material selection optimizes the balance between safety and manufacturing cost.
2Strength
If all members are made of high-strength material to ensure safety, then impact resistance is improved, but load path distribution becomes ineffective
Solution Approach 1:
The patent creates a differentiated material strength structure where critical load-bearing components use high-strength materials while non-critical components use standard materials. This differentiation enables effective load path distribution by allowing the structure to naturally route forces through the most appropriate components, rather than uniformly distributing loads across all members regardless of their structural role.
3Ease of manufacture
If uniform thickness is used for all members to simplify manufacturing, then ease of manufacture is improved, but impact force dispersion is reduced
Solution Approach 1:
The patent implements variable thickness design where critical components (A-pillar, B-pillar, floor pan) have greater thickness for enhanced impact resistance, while less critical components (dash cross member, cowl beam) have smaller thickness. This localized thickness variation optimizes impact force dispersion by directing forces through thicker, more resistant components while maintaining manufacturing feasibility through systematic design variations.
Data Source
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AI summary
An assembling structure of a vehicle body includes side sill members (220) provided in a length direction of a vehicle at both side portions of a lower portion of the vehicle body, respectively, a dash cross member (100) provided in a width direction of the vehicle, both side end portions thereof being assembled to front end portions of the side sill members, center members (120) provided in the length direction of the vehicle between the side sill members and a central portion of the vehicle body, front end portions thereof being assembled to a lower end portion of the dash cross member, and reinforcing members (210) provided in the width direction of the vehicle between the center members and the side sill members, a first end portion of each reinforcing members being assembled to the center members and a second end portion of each reinforcing members being assembled to the side sill members.