Stiffened Frame Supported Panel Load Capacity
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Solution Overview
Problem
Weaker, lighter, and thinner panels, such as those made of foam, face challenges in achieving sufficient load capacity and structural integrity, as existing techniques for increasing load capacity are costly or ineffective, and the potential for increased load capacity in panels with a continuous condition is not fully utilized, particularly with polyurethane foam composite panels.
Innovation Solution
The application of four new conditions: fixed/continuous, continuous/dropped, fixed/continuous/dropped, and enhanced continuous conditions, which involve re-configuring panel shapes and bonding to frame members to significantly increase stiffness and load strength, allowing for a dramatic increase in load carrying capacity, especially by combining fixed boundary and continuous conditions with a dropped section.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If stronger or thicker materials are used to increase load capacity, then load capacity is improved, but panel weight and cost increase
Solution Approach 1:
The patent applies composite materials by bonding foam panels to frame members, creating a composite structure that combines the lightweight properties of foam with the structural strength of the frame. This allows the panel to achieve higher load capacity without increasing the weight of the foam panel itself, as the frame members provide the additional structural support needed.
Solution Approach 2:
The patent segments the structural support function from the panel material by introducing separate frame members that the panel is bonded to. Instead of making the entire panel thicker or stronger, the structure is divided into the lightweight panel and the supporting frame system, allowing each component to be optimized independently for its specific function.
2Strength
If stronger or thicker materials are used to increase load capacity, then load capacity is improved, but manufacturing cost increases
Solution Approach 1:
The composite construction allows manufacturers to use inexpensive foam panels combined with standard frame members and bonding agents, rather than requiring expensive engineered wood or metal panels. This composite approach achieves structural performance at lower material costs.
Solution Approach 2:
The patent changes the structural parameters by introducing frame member spacing and bonding configurations as key design variables. By optimizing the spacing and arrangement of frame members rather than changing panel material properties, the design achieves cost-effective load capacity improvements through geometric optimization rather than material substitution.
3Strength
If the span between frame members is shortened to increase load capacity, then load capacity is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent uses parameter changes by optimizing frame member spacing and panel thickness as key design variables. By systematically varying these parameters, the design achieves optimal load capacity for different spanning requirements without fundamentally changing the structural system complexity.
4Reliability
If weaker, lighter, and thinner panels are used, then desirable properties such as insulation and moisture barrier are improved, but structural load capacity deteriorates
Solution Approach 1:
The patent creates a composite system where the foam panel provides insulation and moisture barrier functions while the bonded frame members provide structural load capacity. This allows the panel to be optimized for its non-structural functions (thinner, lighter foam) while the frame structure compensates for the reduced structural capacity of the individual panel.
Solution Approach 2:
The foam panel serves multiple functions: thermal insulation, moisture barrier, and structural component of the composite assembly. By making the panel multi-functional and combining it with the frame system, the design achieves both excellent insulation properties and adequate structural capacity without requiring separate systems for each function.
Data Source
AI summary
Frame supported panels with an increased load carrying capacity derived from inducing newly discovered conditions on panels made from weaker, lighter and thinner materials. The fixed/continuous/dropped condition can increase a panel's load capacity many times based on the panel's interaction with frame members. This enables foam panels, for example, to be used in structural applications. It also enables polyurethane foam with any cladding to provide a comprehensive, structural building panel that provides a finished exterior, continuous and cavity insulation, an air, moisture and vapor barrier and increased uplift resistance while eliminating condensation and thermal expansion/contraction.