Composite Wheel Insert Load Distribution

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Solution Overview

Problem

Existing wheels made of composite materials lack sufficient load capacity relative to their weight, which affects their performance and durability, especially under varying loads and conditions.

Innovation Solution

A wheel design featuring a composite material wheel center with embedded inserts, including front and rear pads spaced apart and reinforced with fibers, which are mechanically interconnected to enhance load transmission and distribution. The pads can have additional mechanical elements like bushings, filaments, or pins to secure the wheel to a vehicle hub, and are embedded in a matrix material for added strength.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Weight of moving object

If wheels are made of composite materials to reduce weight, then weight is reduced, but load capacity is insufficient

Engineering Contradiction:
Improvewheel weightVSAvoidload capacity
Core Design Contradiction:
Weight of moving objectVSStrength

Solution Approach 1:

The wheel center is constructed using composite material consisting of a matrix material reinforced with reinforcing fibers, providing both weight reduction and enhanced mechanical strength. This composite structure allows the wheel to maintain low weight while achieving sufficient load capacity through the synergistic combination of lightweight matrix material and high-strength fibers.

Inventive Principle:
Principle #40Composite materials

Solution Approach 2:

Reinforcing fibers are strategically arranged in specific regions of the wheel center where load transmission is most critical. The fiber reinforcement is concentrated in the wheel center rather than uniformly distributed throughout the entire wheel, optimizing strength where needed while maintaining overall weight efficiency.

Inventive Principle:
Principle #3Local quality

2Ease of manufacture

If single-piece composite wheel construction is used to simplify manufacturing, then manufacturing complexity is reduced, but load distribution is insufficient

Engineering Contradiction:
Improvemanufacturing simplicityVSAvoidload distribution
Core Design Contradiction:
Ease of manufactureVSStrength

Solution Approach 1:

The wheel is constructed as an assembly of separate components (rim and wheel center) that are manufactured independently and then joined together. The wheel center itself is constructed as a layered composite structure with alternating layers of matrix material and reinforcing fibers. This segmented approach allows for optimized manufacturing of each component while achieving superior load distribution through the layered composite architecture.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP3038840B1Composite wheel and insert
Publication Date: 2022.03.16 MUBEA CARBO TECH GMBH
  • EP3038840B1 patent drawingFigure 1~2
  • EP3038840B1 patent drawingFigure 3
  • EP3038840B1 patent drawingFigure 4~6

AI summary

The invention is directed to wheel (1) comprising a rim (2) and a wheel center (3). The wheel center (3) comprises an insert (10) which at least comprises a front pad (11) and a rear pad (12) which are a distance apart with respect to each other and which are at least partially embedded in a composite material (6).