Motor Vehicle Front-Section Lattice Girder Reinforcement
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Solution Overview
Problem
Existing front-section structures of motor vehicles lack comprehensive reinforcement in longitudinal, transverse, and vertical directions, and do not effectively integrate a suspension unit mount for enhanced stability and force distribution.
Innovation Solution
A front-end transverse beam connected to longitudinal beams, with lattice-like longitudinal beams and suspension unit mounts, providing a stable reinforcement structure through angled transverse struts, lattice girders, and inclined support rods, which distribute forces and enhance stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a simple front-section structure is used, then manufacturing cost and device complexity are reduced, but structural strength and stability in longitudinal, transverse and vertical directions deteriorate
Solution Approach 1:
The front-section structure is divided into multiple functional components: longitudinal beams for longitudinal strength, transverse beam for transverse stability, lattice girders for vertical reinforcement, and suspension unit mount for localized load bearing. Each segment performs a specific reinforcement function, achieving comprehensive strength without requiring a monolithic complex structure.
Solution Approach 2:
The structure incorporates reinforcement elements in three orthogonal dimensions: longitudinal beams extend in the longitudinal direction, transverse beam provides transverse stability, and lattice girders add vertical reinforcement. This multi-dimensional approach achieves comprehensive structural strength by distributing reinforcement across different spatial dimensions rather than concentrating complexity in a single direction.
2Stability of the object's composition
If comprehensive reinforcement structure is added, then structural stability is improved, but weight and manufacturing complexity increase
Solution Approach 1:
The structure employs composite construction combining different material properties: aluminum or CFRP struts for high strength-to-weight ratio, plastic components for lightweight reinforcement, and steel for critical load-bearing elements. This composite approach achieves comprehensive stability while minimizing weight by selecting materials optimized for their specific functional requirements.
Solution Approach 2:
Reinforcement is distributed locally to where it is most needed: lattice girders concentrate vertical reinforcement at the suspension unit mount location, transverse struts provide localized stiffening of the transverse beam, and longitudinal beams focus strength at connection points. This localized quality approach achieves overall stability without uniformly increasing weight across the entire structure.
3Force
If lattice girders and transverse struts are added, then transverse stability and force distribution are improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The lattice girders and transverse struts are designed as modular, pre-fabricated components that can be independently manufactured and then assembled into the final structure. This dynamic assembly approach allows each component to be optimized for its specific manufacturing process while simplifying the overall production through standardized connection interfaces and sequential assembly steps.
Data Source
AI summary
For the reinforcement of a front section of a motor vehicle, a transverse beam is arranged between longitudinal beams of the body structure at the front side. The transverse beam is situated above the longitudinal beams and is adjoined by in each case one lattice girder. Each lattice girder extends in the longitudinal direction of the longitudinal beams and is connected at one side to the transverse beam and at the other side to a suspension unit mount.