Imperial College London
Portrait Picture

Professor Rob Hewson

Faculty of Engineering, Department of Aeronautics

Professor of Multidisciplinary Design Optimisation
 
 
 
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Contact

 

r.hewson Website

 
 
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Location

 

341City and Guilds BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Murphy:2021:10.1016/j.addma.2021.102385,
author = {Murphy, R and Hewson, R and Santer, M},
doi = {10.1016/j.addma.2021.102385},
journal = {Additive Manufacturing},
pages = {1--17},
title = {In-loop additive manufacturing constraints for open-walled microstructures},
url = {http://dx.doi.org/10.1016/j.addma.2021.102385},
volume = {48},
year = {2021}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The derivation and integration of novel in-loop additive manufacturing constraints for open-walled microstructures within a multiscale optimization framework is presented. Problematic fabrication features are discouraged in-loopthrough the application of an augmented projection filter and two relaxed binary integral constraints, which prohibit the formation of unsupported members,isolated assemblies of overhanging members and slender members during optimization. Through the application of these constraints, it is possible to deriveself-supporting, hierarchical structures with varying topology, suitable for fabrication through AM processes. Two classical compliance minimization problemsare solved using both the base framework with a prohibitive lower bound constraint applied on member radius to guarantee manufacturability and the baseframework with integrated in-loop AM constraints. In both cases, the presentwork leads to a significant increase in the mechanical performance.Keywords: Structural optimization, Multiscale methods, Design for additivemanufacturing, Length scale control, Overhang control
AU  - Murphy,R
AU  - Hewson,R
AU  - Santer,M
DO  - 10.1016/j.addma.2021.102385
EP  - 17
PY  - 2021///
SN  - 2214-8604
SP  - 1
TI  - In-loop additive manufacturing constraints for open-walled microstructures
T2  - Additive Manufacturing
UR  - http://dx.doi.org/10.1016/j.addma.2021.102385
UR  - https://www.sciencedirect.com/science/article/pii/S221486042100539X
UR  - http://hdl.handle.net/10044/1/92570
VL  - 48
ER  -
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