Composite Vehicle Body Panel Structure for Lightweight Strength
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Solution Overview
Problem
Current methods for reducing the weight of motor vehicle body panels through thickness or density reduction in plastic materials face limitations due to appearance defects and mechanical performance degradation, offering only limited weight savings of approximately 5% to 15%.
Innovation Solution
A motor vehicle body panel design featuring a thin plastic coating (0.1-1.5 mm thick) fixed to a plastic support, allowing for significant weight reduction without compromising mechanical strength, achieved by using a lightweight plastic coating and support structure, which can include perforated or woven materials with elastic deformation capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If the thickness of plastic body panels is reduced to save weight, then weight is reduced, but mechanical strength and appearance quality deteriorate
Solution Approach 1:
The invention uses a composite structure combining a thin plastic covering (0.1-1.5mm) with a plastic support frame, creating a hybrid construction that achieves weight reduction while maintaining mechanical strength through the synergistic combination of materials and structures
Solution Approach 2:
The body panel is divided into two functional parts: a thin covering layer for weight reduction and aesthetic purposes, and a separate support structure for mechanical strength, allowing each component to be optimized independently for its specific function
2Weight of moving object
If the density of plastic material is reduced to save weight, then weight is reduced, but mechanical performance and appearance quality deteriorate
Solution Approach 1:
The invention combines a low-density thin covering with a structured plastic support to achieve weight reduction without compromising mechanical performance, as the support structure provides the necessary strength while the covering contributes minimal weight
3Weight of moving object
If lightening recesses are made by molding to reduce mass, then weight is reduced, but appearance defects occur
Solution Approach 1:
The invention separates the aesthetic covering layer from the structural support, allowing the support to contain molded recesses for weight reduction while the smooth covering layer maintains appearance quality by concealing the structural features
Data Source
Figure 1~3
Figure 4~5
AI summary
The invention relates to a motor vehicle body panel (2), comprising at least one coating (4) of a thickness between 0.1 and 1.5 millimeters, preferably between 0.3 and 0.7 millimeters, forming a main body of the body panel (2), the coating being fixed to at least one plastic support (10) forming at least in part a frame of the body panel (2).