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Design of Lightweight Structural Components for Direct Digital Manufacturing

Ning, Xin and Pellegrino, Sergio (2012) Design of Lightweight Structural Components for Direct Digital Manufacturing. In: 53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference. American Institute of Aeronautics and Astronautics , Reston, VA, Art. No. 2012-1807. ISBN 9781600869372. https://resolver.caltech.edu/CaltechAUTHORS:20190826-092412796

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Abstract

The rapid growth in direct digital manufacturing technologies has opened the challenge of designing optimal micro-structures for high-performance components. Current topology optimization techniques do not work well for this type of problems and hence in this paper we propose a technique based on an implicit representation of the structural topology. The detailed microstructure is defined by a continuous variable, the size distribution field, defined over the design domain by chosen shape functions. We can optimize the structural topology by optimizing only the weights of the size distribution field and, for any given size distribution, we use standard meshing software to determine the actual detailed micro-structure. We have implemented the optimization loop using commercial CAD and FEA software, running under a genetic algorithm in MATLAB. Application this novel technique to the design of a sandwich beam has produced designs that are superior to any standard solid beam or even optimized truss structure.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.2514/6.2012-1807DOIArticle
ORCID:
AuthorORCID
Ning, Xin0000-0002-9432-3665
Pellegrino, Sergio0000-0001-9373-3278
Additional Information:© 2012 by Xin Ning and Sergio Pellegrino. Published by the American Institute of Aeronautics and Astronautics with permission. We thank Ted Nye for inspiring this research and gratefully acknowledge the financial support received from Northrop Grumman Aerospace Systems.
Group:GALCIT
Funders:
Funding AgencyGrant Number
Northrop Grumman Aerospace SystemsUNSPECIFIED
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Other Numbering System NameOther Numbering System ID
AIAA Paper2012-1807
Record Number:CaltechAUTHORS:20190826-092412796
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20190826-092412796
Official Citation:Design of Lightweight Structural Components for Direct Digital Manufacturing Xin Ning and Sergio Pellegrino 53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference. https://doi.org/10.2514/6.2012-1807
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:98221
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:26 Aug 2019 18:18
Last Modified:03 Oct 2019 21:39

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