Method of optimizing geometry of a seating element
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing seating designs, particularly in aircraft and group settings, fail to optimize for a wide range of body shapes and multiple postures, resulting in suboptimal comfort and weight distribution, as they lack mechanisms to adapt to individual variations in human anatomy.
Innovation Solution
A method is developed to define and optimize the geometry of seat membranes and frame members by converting three-dimensional body maps into two-dimensional shapes, calculating key parameters such as cell tangency, band lengths, and pressure multipliers to determine the optimal shape and elasticity of seat components for supporting multiple body shapes in various postures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a planar membrane is used as a seat bottom or seat back member, then the seat weight is reduced, but the comfort and weight distribution for a wide variety of body shapes is compromised
Solution Approach 1:
The patent applies preliminary action by pre-defining the membrane geometry in its relaxed state using optimized algorithms that anticipate the deformation patterns required for comfortable seating. The membrane is pre-configured with specific curvature and tension characteristics that will automatically adapt to various body shapes when loaded, eliminating the need for active adjustment mechanisms while maintaining comfort across diverse user populations.
Solution Approach 2:
The patent utilizes parameter changes by systematically varying the membrane's geometric parameters (curvature, tension distribution, boundary conditions) in the relaxed state to optimize performance. Through computational algorithms, the membrane's shape and elastic properties are adjusted to create optimal deformation patterns that accommodate different body shapes and seating postures, resolving the contradiction between lightweight design and adaptability.
2Ease of operation
If the membrane geometry is optimized for one body shape, then comfort for that shape is improved, but the ability to accommodate other body shapes is reduced
Solution Approach 1:
The patent achieves universality by developing a membrane geometry optimization methodology that creates a single membrane design capable of serving multiple body shapes effectively. The optimized membrane configuration incorporates geometric features and tension patterns that naturally adapt to various anatomical variations, allowing one membrane design to function optimally across a population diverse in size and shape rather than requiring customized designs for each individual.
3Ease of operation
If more cushioning and complex structures are added to improve comfort, then seating comfort is enhanced, but the seat weight increases
Solution Approach 1:
The patent applies flexible shells and thin films by utilizing a tensioned membrane structure that provides comfort through controlled deformation rather than thick cushioning layers. The membrane's elasticity and pre-configured geometry allow it to conform to body contours and distribute pressure effectively, achieving comfort comparable to heavily cushioned seats while maintaining significantly lower weight and simpler construction.
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 method enables the creation of seat membranes and frames that provide enhanced comfort and weight distribution across a range of body shapes and postures, improving passenger comfort while maintaining lightweight design criteria.
Implementation Method 1
When under load, the combined deformation of the overlying seat cushion and the membrane provide an enlarged surface area of contact with and reduced pressure on the posterior (i.e., buttocks), thighs and back of the seat occupant.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A method of optimizing the geometry of seating components for a range of individual body shapes in a single posture or a variety of postures. The method includes defining a two- dimensional shape of a membrane with given deformation or elasticity characteristics optimized for supporting a defined population in a given posture, or multiple postures.