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9.193 Lectures/texts in conference proceedings
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  • II International Conference on Simulation for Additive Manufacturing (Sim-AM 2019) Pavia, Italy, 11-13 September, 2019
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Numerical and experimental crushing behaviour investigation of EBM printed auxetic chiral lattices

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Gunaydin, Kadir
Gallina, Francesco G.
Airoldi, Alessandro
Sala, Giuseppe
Grande, Antonio M.
Document typeConference report
Defense date2019
PublisherCIMNE
Rights accessOpen Access
All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder
Abstract
In this study, Electron Beam Melting (EBM) is used to produce chiral auxetic lattices, and the compression of chiral auxetic lattice is investigated experimentally and numerically in the edgewise direction, where auxeticity can be experienced. Titanium Alloy (Ti6Al4V) metal- lic powder is used in this study. To understand mechanical behaviour and to characterize EBM printed parts, tensile tests are conducted. According to the tensile test results, a constitutive equation is selected, calibrated and adopted to represent the behaviour of the material. Further- more, a chiral unit cell is manufactured and tested with a compressive load profile to investigate its displacement limit by applying large displacements without experiencing permanent defor- mations, degradation or failures. The same scenarios explored in the experiments are then analyzed by means of non-linear computational models using a commercial finite element code to validate a numerical approach for optimal design and performance prediction.
CitationGunaydin, K. [et al.]. Numerical and experimental crushing behaviour investigation of EBM printed auxetic chiral lattices. A: Sim-AM 2019. "Sim-AM 2019 : II International Conference on Simulation for Additive Manufacturing". CIMNE, 2019, p. 408-416. ISBN 978-84-949194-8-0. 
URIhttp://hdl.handle.net/2117/334900
ISBN978-84-949194-8-0
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  • International Conference on Simulation for Additive Manufacturing - Sim-AM - II International Conference on Simulation for Additive Manufacturing (Sim-AM 2019) Pavia, Italy, 11-13 September, 2019 [44]
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