Failure Mode Analysis Of Kagome Lattice Structures

Ultralight weight structures are today’s essential need in aerospace, marine and automotive industries. Strength and stiffness optimization of load bearing structures is made possible with the evolution of additive manufacturing technologies through shape or topology optimization. Further composite...

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Main Authors: Rinoj, Gautam, Idapalapati, Sridhar, Feih, Stefanie
Other Authors: School of Mechanical and Aerospace Engineering
Format: Conference or Workshop Item
Language:English
Published: 2016
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Online Access:https://hdl.handle.net/10356/84555
http://hdl.handle.net/10220/41847
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-845552020-09-24T20:11:50Z Failure Mode Analysis Of Kagome Lattice Structures Rinoj, Gautam Idapalapati, Sridhar Feih, Stefanie School of Mechanical and Aerospace Engineering Proceedings of the 2nd International Conference on Progress in Additive Manufacturing (Pro-AM 2016) A*STAR SIMTech Singapore Centre for 3D Printing Kagome structures Fused deposition modelling Ultralight weight structures are today’s essential need in aerospace, marine and automotive industries. Strength and stiffness optimization of load bearing structures is made possible with the evolution of additive manufacturing technologies through shape or topology optimization. Further composite materials and sandwich constructions reduce the design weight. To fully realize the lightweight structure, core designs with low density and high strength are necessary for sandwich panel design. In this study, the performance of the 3D Kagome truss core structure in compression loading is experimentally investigated. These bio-inspired core structures are fabricated by Fused Deposition Modelling (FDM) with Acrylonitrile butadiene styrene (ABS) ABSplus® material for experimental validation purposes. The geometrical parameters of the Kagome structure in terms of its slenderness ratio are varied to study the switch of failure mechanism from yielding dominant behavior to buckling. The effective stiffness of the truss found from finite element modeling and based on experimental results are compared, and the reasons for their discrepancy are explored. The modulus of the Kagome unit-cell is found to be linearly related to its relative density. The result show that with the increase in the slenderness ratio (l/r), the strength of the Kagome structure decreases. MOE (Min. of Education, S’pore) Published version 2016-12-13T09:12:16Z 2019-12-06T15:47:08Z 2016-12-13T09:12:16Z 2019-12-06T15:47:08Z 2016 Conference Paper Rinoj, G., Idapalapati, S., & Feih, S. (2016). Failure Mode Analysis Of Kagome Lattice Structures. Proceedings of the 2nd International Conference on Progress in Additive Manufacturing (Pro-AM 2016), 91-96. https://hdl.handle.net/10356/84555 http://hdl.handle.net/10220/41847 en © 2016 by Pro-AM 2016 Organizers. Published by Research Publishing, Singapore 6 p. application/pdf
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic Kagome structures
Fused deposition modelling
spellingShingle Kagome structures
Fused deposition modelling
Rinoj, Gautam
Idapalapati, Sridhar
Feih, Stefanie
Failure Mode Analysis Of Kagome Lattice Structures
description Ultralight weight structures are today’s essential need in aerospace, marine and automotive industries. Strength and stiffness optimization of load bearing structures is made possible with the evolution of additive manufacturing technologies through shape or topology optimization. Further composite materials and sandwich constructions reduce the design weight. To fully realize the lightweight structure, core designs with low density and high strength are necessary for sandwich panel design. In this study, the performance of the 3D Kagome truss core structure in compression loading is experimentally investigated. These bio-inspired core structures are fabricated by Fused Deposition Modelling (FDM) with Acrylonitrile butadiene styrene (ABS) ABSplus® material for experimental validation purposes. The geometrical parameters of the Kagome structure in terms of its slenderness ratio are varied to study the switch of failure mechanism from yielding dominant behavior to buckling. The effective stiffness of the truss found from finite element modeling and based on experimental results are compared, and the reasons for their discrepancy are explored. The modulus of the Kagome unit-cell is found to be linearly related to its relative density. The result show that with the increase in the slenderness ratio (l/r), the strength of the Kagome structure decreases.
author2 School of Mechanical and Aerospace Engineering
author_facet School of Mechanical and Aerospace Engineering
Rinoj, Gautam
Idapalapati, Sridhar
Feih, Stefanie
format Conference or Workshop Item
author Rinoj, Gautam
Idapalapati, Sridhar
Feih, Stefanie
author_sort Rinoj, Gautam
title Failure Mode Analysis Of Kagome Lattice Structures
title_short Failure Mode Analysis Of Kagome Lattice Structures
title_full Failure Mode Analysis Of Kagome Lattice Structures
title_fullStr Failure Mode Analysis Of Kagome Lattice Structures
title_full_unstemmed Failure Mode Analysis Of Kagome Lattice Structures
title_sort failure mode analysis of kagome lattice structures
publishDate 2016
url https://hdl.handle.net/10356/84555
http://hdl.handle.net/10220/41847
_version_ 1681057214771494912