Inverse Design Machine for Impact-Mitigating Architectured Isotropic Structures
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Solution Overview
Problem
Conventional manufacturing methods fail to produce materials with enhanced impact mitigation properties, limiting the ability to create structures that effectively absorb and redirect mechanical loads during impacts.
Innovation Solution
An inverse design machine is used to generate a designer impact-mitigating architectured isotropic structure through selective pruning and node optimization, which modifies the primary structure of a manufactured article to achieve greater impact mitigation by adjusting its shear and bulk moduli, enabling the creation of materials with tunable mechanical properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional manufacturing methods are used, then production is simple and straightforward, but the materials cannot achieve enhanced impact mitigation properties
Solution Approach 1:
The structure is divided into a network of nodes and bonds, where each bond can be independently pruned or modified. This segmentation allows selective removal of bonds to achieve desired impact mitigation properties while maintaining overall structural integrity through the distributed network architecture.
Solution Approach 2:
Instead of starting with a solid material and removing material to create structure, the invention uses an inverse design approach where the desired impact mitigation properties are specified first, and the structure (node-bond network) is generated to achieve those properties. The pruning process then refines this generated structure.
2Strength
If the primary structure is modified to achieve greater impact mitigation, then mechanical load redirection improves, but the manufacturing process becomes more complex
Solution Approach 1:
The invention modifies structural parameters such as bond density, node positioning, and network topology through computational pruning algorithms. These parameter changes enable tuning of mechanical properties including shear modulus and bulk modulus to achieve enhanced impact mitigation while maintaining manufacturability through digital design and fabrication.
Solution Approach 2:
The invention replaces traditional mechanical design and analysis methods with computational algorithms that automatically prune and optimize the node-bond network. This substitution of mechanical trial-and-error design with computational optimization enables complex structural modifications to be achieved efficiently through software rather than physical prototyping.
3Adaptability or versatility
If selective pruning and node optimization are applied, then tunable mechanical properties are achieved, but computational resources and processing time increase
Solution Approach 1:
The pruning process selectively removes only the necessary bonds to achieve the desired mechanical properties, rather than considering all possible bond configurations. This partial action approach focuses computational effort on the most impactful modifications, reducing processing time while maintaining the ability to tune mechanical properties effectively.
Data Source
AI summary
An inverse design machine for making a manufactured article that includes a designer Impact-mitigating architectured isotropic structure includes: an input unit that receives a primary structure; a primary structure analyzer that receives the primary structure from the input unit and determines primary properties of the primary structure; a structure adjuster that receives the primary properties from the primary structure analyzer, receives impact-mitigating properties from a structural property manager, and produces the designer Impact-mitigating architectured isotropic structure from the impact-mitigating properties; and the structural property manager that provides the impact-mitigating properties to the structure adjuster.