Product Shape Design Using Contact Pressure Analysis
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Solution Overview
Problem
Existing product design methods for human body contact products, such as masks and goggles, fail to optimize pressure distribution effectively using finite element analysis, leading to discomfort or inefficiencies in fit across various users.
Innovation Solution
A method and device that utilize finite element analysis to design product shapes by generating a virtual subject from body scan data, calculating contact pressure, and iteratively adjusting the product shape to ensure even pressure distribution within a preset reference range, using a receiving, generating, calculating, and designing part to refine the product shape based on contact pressure analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional product design methods are used without finite element analysis, then design process is simpler, but pressure distribution optimization is insufficient leading to discomfort
Solution Approach 1:
The patent performs preliminary finite element analysis during the virtual design phase to predict and optimize pressure distribution before physical manufacturing. This allows pressure optimization to be built into the design from the start, avoiding the need for complex post-manufacturing adjustments while achieving better pressure distribution.
Solution Approach 2:
The patent creates virtual copies of products and human bodies (through 3D scanning and modeling) to perform simulations in a virtual environment. This virtual copying allows complex FEA analysis to be conducted without physical prototypes, reducing the need for repeated physical testing while optimizing pressure distribution.
2Adaptability or versatility
If product shape is fixed without iterative adjustment, then manufacturing is easier, but contact pressure cannot be optimized for different users
Solution Approach 1:
The patent implements a dynamic design process where the product shape can be iteratively adjusted based on FEA results. The system allows multiple design iterations with automatic pressure analysis, enabling the product to be optimized for different user geometries while streamlining the iteration process through computational efficiency.
Solution Approach 2:
The patent establishes a feedback loop where finite element analysis results on contact pressure are fed back into the design modification process. This automated feedback mechanism allows the system to identify high-pressure areas and automatically adjust the product shape in subsequent iterations, optimizing fit for different users while reducing manual trial-and-error time.
3Measurement precision
If detailed finite element analysis is performed, then contact pressure calculation is more accurate, but computational time increases
Solution Approach 1:
The patent applies finite element analysis selectively to critical contact regions rather than uniformly across the entire product geometry. By focusing computational resources on areas where pressure analysis is most important, the system achieves accurate contact pressure calculations while reducing overall computational time and resource requirements.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enables the design of product shapes that provide appropriate pressure to the human body, ensuring comfort and optimal fit for a range of users, applicable to various products like masks, helmets, and VR headsets, by iteratively recalculating and adjusting contact pressures until they fall within a desired range.
Implementation Method 1
calculating contact pressure generated by contact of the virtual subject and the product shape using finite element analysis
Data Source
AI summary
Disclosed are a product shape design method using contact body pressure analysis and a device therefor. The product shape design method according to an embodiment of the present invention includes the steps of: receiving body scan data of a subject; generating a virtual subject corresponding to the subject on the basis of the received body scan data; contacting the generated virtual subject with a preconfigured product shape to be designed and calculating contact pressure generated by contact of the virtual subject and the product shape; and designing the product shape by changing the product shape on the basis of the calculated contact pressure.