Anthropometric Product Design Using Posture Sensitivity Analysis
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Solution Overview
Problem
Conventional anthropometric product design methods fail to adequately account for user posture diversity and do not incorporate design optimization to ensure comfortable product use postures, lacking systematic design sensitivity analysis.
Innovation Solution
An anthropometric product design method that performs design sensitivity analysis through computer simulations to optimize product design dimensions, incorporating various posture characteristics and human body variables to determine optimal design dimensions that minimize user posture discomfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional anthropometric product design methods use a single reference posture to determine product design dimensions, then the design process is simple, but the product does not accommodate user posture diversity
Solution Approach 1:
The patent applies dynamics by transitioning from a static single-reference-posture approach to a dynamic multi-posture simulation approach. The system simulates multiple postures (e.g., 5th, 50th, and 95th percentiles) and dynamically adjusts design dimensions to optimize comfort across all postures, making the design adaptable to posture diversity while managing complexity through systematic simulation.
Solution Approach 2:
The patent changes key design parameters by introducing posture loss scores as optimization criteria. It modifies design dimensions (seat height, depth, backrest angle, etc.) based on simulated posture data across multiple user percentiles, using parameter changes to balance adaptability to diverse postures with manageable design process complexity.
2Ease of operation
If design optimization is not performed, then the design process is faster, but user posture comfort is not optimized
Solution Approach 1:
The patent applies preliminary action by performing computer simulations of multiple postures before finalizing design dimensions. It calculates posture loss scores in advance for various design scenarios, allowing optimization of user posture comfort while managing design time through systematic pre-analysis rather than iterative trial-and-error.
Solution Approach 2:
The patent implements feedback by using posture loss scores to evaluate and refine design dimensions. The simulation results provide quantitative feedback on how design changes affect user comfort across different postures, enabling data-driven optimization that balances improved ease of operation with efficient use of design time.
3Manufacturing precision
If design sensitivity analysis is not conducted, then the design process is simpler, but optimal design dimensions cannot be determined
Solution Approach 1:
The patent replaces complex manual analysis with computer-based simulation systems. It uses computational methods to perform design sensitivity analysis, automatically calculating posture loss scores and evaluating design dimension optimizations, thereby achieving manufacturing precision through automated analysis while managing system complexity through software implementation.
Data Source
AI summary
Provided are an anthropometric product design method and a recording media storing a computer program for the same. The anthropometric product design method includes the operations of: (a) expressing the relationships between human body variables and design variables in equations, and establishing design equations for design variables, respectively, of a product to be designed; (b) generating a representative human model (RHM) for the product to be designed; (c) extrapolating postures according to changes in design dimensions through a computer simulation using the design equations and RHMs, and comparing data on the extrapolated postures with defined reference posture data to perform a design sensitivity analysis; and (d) determining optimal design dimensions for related design variables based on the design sensitivity analysis. Accordingly, because various human body dimensions and product use postures of users can be reflected in product designs through computer simulation, products that are better customized for users can be designed, and products can be designed that are optimized through design sensitivity analyzes of posture loss scores according to changes in design dimensions.