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Aperiodic Lattice Design Optimization for Multi-Functional Lightweight Aerospace Structures

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: 80NSSC20C0021
Agency Tracking Number: 183883
Amount: $754,962.00
Phase: Phase II
Program: STTR
Solicitation Topic Code: T3
Solicitation Number: STTR_18_P2
Timeline
Solicitation Year: 2018
Award Year: 2020
Award Start Date (Proposal Award Date): 2020-01-03
Award End Date (Contract End Date): 2022-01-02
Small Business Information
7755 South Research Drive, Suite 110, Tempe, AZ, 85284-1816
DUNS: 878899459
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Dhruv Bhate
 (765) 430-0186
 dhruv.bhate@asu.edu
Business Contact
 Nathan Huber
Phone: (480) 813-4884
Email: nathan.huber@padtinc.com
Research Institution
 Arizona State University-Tempe
 551 E. Tyler Mall St ERC RM 159
Tempe, AZ, 85281-3670
 Federally funded R&D center (FFRDC)
Abstract
The primary innovation proposed is the development of a lattice design tool that combines concepts from topology and parameter optimization to generate lattice materials that are aperiodic in nature and do not require a priori definition of cell size. With Additive Manufacturing, we can now specify detail to a degree previously not possible. In the context of cellular materials, however, it is not apparent how we can maximize this freedom to improve performance, and enable multi-functionality. This is the opportunity that our innovation addresses, by developing a lattice design optimization tool that does not require a priori knowledge of either cell shape or stochastic function, instead subjecting lattice connectivity itself to optimization, leveraging Bio-inspired design principles to effectively constrain the search. This capability does not exist in commercial code, these ideas are only hinted at in academic literature. We expect these new design capabilities to impact positively by at least 20-50%, all the domains traditionally occupied by cellular materials. Nesting our capability within commercial FEA software (ANSYS) will accelerate adoption. In addition to the software product itself, our deliverables include cellular material data for inclusion in NASArsquo;s open-source PeTaL platform, data analysis, experimental results, and 3D printed metal demonstration artifacts.

* Information listed above is at the time of submission. *

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