Morphing Panel Structure with Intersecting Web Core
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Solution Overview
Problem
Conventional morphing panel structures in aerospace applications are often resistant to in-plane deformation, compromising their ability to withstand out-of-plane bending or flexing deformation, which is crucial for aerodynamic functionality.
Innovation Solution
A core-based morphing panel structure with a composite facesheet and a stiffening core in an intersecting web configuration, featuring elastomeric matrix layers and reinforcing elements, allows for resistance to out-of-plane deformation while maintaining in-plane deformation capability, incorporating actuators for shape change.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional panel structures are used to provide structural support, then out-of-plane bending resistance is improved, but in-plane deformation capability deteriorates
Solution Approach 1:
The panel structure is divided into multiple discrete core members arranged in an intersecting web configuration, creating a segmented stiffening system. This segmentation allows the structure to provide out-of-plane support through the distributed core members while permitting in-plane deformation through the spaces between members and the compliant facesheet design.
Solution Approach 2:
The stiffening core provides localized structural support at specific positions where core members intersect and attach to the facesheet, while other regions maintain compliance for morphing. The core members are strategically positioned to provide support exactly where needed without restricting overall in-plane deformation capability.
2Strength
If stiffening core is added to resist out-of-plane deformation, then bending rigidity is improved, but weight increases
Solution Approach 1:
Rather than using a continuous solid core that would add significant weight, the structure employs segmented core members arranged in an intersecting web pattern. This segmentation reduces material usage while maintaining bending rigidity through the distributed stiffening effect of multiple discrete members.
Solution Approach 2:
The intersecting web configuration creates a porous or open-cell structure with core spaces between members. This porous architecture provides sufficient out-of-plane support through the distributed core members while minimizing weight by reducing material volume compared to a solid core construction.
3Strength
If composite facesheet with reinforcing layers is used, then structural strength is improved, but manufacturing complexity increases
Solution Approach 1:
The composite facesheet uses reinforcing layers made from the same material composition as the core members (foam, fabric, or composite material), creating a homogeneous structure throughout. This material homogeneity simplifies manufacturing by allowing consistent fabrication processes and material handling across different components.
Solution Approach 2:
The structure employs composite materials combining foam, fabric, or composite layers in both the facesheet and core members. This composite construction provides high structural strength-to-weight ratio while the use of similar composite materials throughout simplifies the manufacturing process through consistent material properties and fabrication techniques.
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
The solution enhances bending rigidity to resist aerodynamic pressures and buckling while minimizing weight, enabling efficient morphing deformations with minimal control energy, suitable for aerospace and other applications.
Implementation Method 1
a plurality of elastomeric matrix layers laminated with the reinforcing layers in the composite facesheet
Implementation Method 2
a stiffening core having a plurality of core members in an intersecting web configuration provided on the composite facesheet
Data Source
AI summary
A panel structure includes a composite facesheet and a stiffening core having a plurality of core members in an intersecting web configuration provided on the composite facesheet.