Computational study of the mechanical behavior of steel produced by selective laser melting

Abstract

A two-dimensional numerical analysis of the evolution of grain structure observed during selective laser melting and of the mesomechanical behavior of additive manufactured specimens is performed. Cellular automata finite-difference model is developed to simulate the evolution of grain structure. A heat equation is solved with the use of the classical finite-difference scheme. The cellular automata model for the simulation of microstructural development is based on the approach put forward by Rappaz and Gandin. The Goldak double ellipsoid heat source model is adopted to describe the heat input during laser additive manufacturing process. An elastoplastic constitutive model including isotropic strain hardening is used to describe the mechanical response of additive manufactured specimens. A dynamic boundary-value problem in a plane strain formulation is solved numerically with the use of a Wilkins-type finite-difference scheme. The mesoscopic stress-strain state of additive manufactured specimens subjected to the uniaxial tension is analyzed. The focus is on the role of the inhomogeneous material microstructure in the evolution of the stress-strain state. A combined effect of grain structure and boundary conditions is investigated.

Original language	English
Title of host publication	Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016: Proceedings of the International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016
Publisher	American Institute of Physics Inc.
Volume	1783
ISBN (Electronic)	9780735414457
DOIs	https://doi.org/10.1063/1.4966529
Publication status	Published - 10 Nov 2016
Event	International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016 - Tomsk, Russian Federation Duration: 19 Sep 2016 → 23 Sep 2016

Conference

Conference	International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016
Country	Russian Federation
City	Tomsk
Period	19.9.16 → 23.9.16

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1063/1.4966529

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Zinovieva, O., Zinoviev, A., Ploshikhin, V., Romanova, V., & Balokhonov, R. (2016). Computational study of the mechanical behavior of steel produced by selective laser melting. In Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016: Proceedings of the International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016 (Vol. 1783). [020235] American Institute of Physics Inc.. https://doi.org/10.1063/1.4966529

Computational study of the mechanical behavior of steel produced by selective laser melting. / Zinovieva, O.; Zinoviev, A.; Ploshikhin, V.; Romanova, V.; Balokhonov, R.

Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016: Proceedings of the International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016. Vol. 1783 American Institute of Physics Inc., 2016. 020235.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Zinovieva, O, Zinoviev, A, Ploshikhin, V, Romanova, V & Balokhonov, R 2016, Computational study of the mechanical behavior of steel produced by selective laser melting. in Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016: Proceedings of the International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016. vol. 1783, 020235, American Institute of Physics Inc., International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016, Tomsk, Russian Federation, 19.9.16. https://doi.org/10.1063/1.4966529

Zinovieva O, Zinoviev A, Ploshikhin V, Romanova V, Balokhonov R. Computational study of the mechanical behavior of steel produced by selective laser melting. In Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016: Proceedings of the International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016. Vol. 1783. American Institute of Physics Inc. 2016. 020235 https://doi.org/10.1063/1.4966529

Zinovieva, O. ; Zinoviev, A. ; Ploshikhin, V. ; Romanova, V. ; Balokhonov, R. / Computational study of the mechanical behavior of steel produced by selective laser melting. Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016: Proceedings of the International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016. Vol. 1783 American Institute of Physics Inc., 2016.

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