Rail Vehicle Assembly with Interlocked Composite and Metallic Areas
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current rail vehicle assembly technologies face challenges in creating efficient and quick welded connections between metal and fiber-plastic composite parts due to the lack of suitable joining techniques, resulting in increased manual production effort and limited use of lightweight plastics in rail vehicle structures.
Innovation Solution
A rail vehicle assembly design that incorporates a fiber-plastic composite area connected to a metallic area with a positive fit, utilizing a seam or woven fibers to create a form-fitting connection, allowing for welded assembly with a metallic area that can be clamped and reinforced, enabling the use of lightweight materials while maintaining structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If fiber-reinforced plastic composite is used for rail vehicle assemblies, then weight is reduced, but joining capability with metallic assemblies is insufficient
Solution Approach 1:
The invention uses fiber-reinforced plastic composite materials (such as glass fiber, carbon fiber, or aramid fiber reinforced plastics) to construct rail vehicle assemblies like side walls, end panels, or roofs. These composite materials provide the desired weight reduction while maintaining structural integrity, directly addressing the contradiction between weight reduction and manufacturing ease by enabling the use of lightweight materials without sacrificing joinability through the integrated metallic area design.
Solution Approach 2:
The rail vehicle assembly is segmented into distinct functional areas: a fiber-reinforced plastic composite area for weight reduction and a metallic area for joining operations. This segmentation allows each material to be used where it provides the most benefit - plastics for structural panels and metals for connection points - thereby resolving the contradiction between using lightweight materials and maintaining ease of manufacture through proven metallic joining technologies.
2Extent of automation
If welding technology is used for connections, then automation suitability is improved, but applicability to plastic-metal connections is limited
Solution Approach 1:
The assembly is divided into a plastic composite area and a metallic area, with the metallic area specifically designed to serve as the welding interface. This segmentation enables automated welding processes to be applied to the metal components while the plastic components maintain their lightweight advantages, thus achieving both automation suitability and material compatibility by assigning different functions to different material zones.
Solution Approach 2:
The metallic area serves multiple functions: it provides structural support, enables automated welding connections with other assemblies, and interfaces with the fiber-reinforced plastic composite area through positive locking. This multi-functionality allows a single metallic component to address both the automation requirement (through weldability) and the adaptability requirement (through compatibility with both plastic and metal assemblies).
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
Rail vehicle assembly comprising at least one area made of fiber plastic composite (2) and at least one metallic area (1), the metallic area (1) being interlocked with the area made of fiber plastic composite (2).