TY - GEN
T1 - How roughness and defect structure affects mechanical response of additively manufactured lattices
AU - Jiang, Panwei
AU - Basu, Saurabh
N1 - Publisher Copyright:
© Proceedings of the 2020 IISE Annual. All Rights Reserved.
PY - 2020
Y1 - 2020
N2 - Additive manufacturing (AM) is a promising technique for building complex lattice structure with excellent strength-to-weight ratio. However, AM has inherent problems such as over/under-melt, and turbulent molten pools. Therefore, AM-fabricated parts suffer from porosity issues and rough surfaces. In this work, a plane stress Finite Element Method (FEM) was used to create a computational model with 2.5D lattice structures fabricated by AM. Typical defects such as surface roughness and pores were implemented into the lattice structures. The model is able to simulate the mechanical response of lattice structures under different (i) strut diameters, (ii) surface roughness, (iii) porosity, and (iv) pore locations. AlSi10Mg and Inconel 718 are used in the model to study the effect of strut diameters, surface roughness and porosity defects.
AB - Additive manufacturing (AM) is a promising technique for building complex lattice structure with excellent strength-to-weight ratio. However, AM has inherent problems such as over/under-melt, and turbulent molten pools. Therefore, AM-fabricated parts suffer from porosity issues and rough surfaces. In this work, a plane stress Finite Element Method (FEM) was used to create a computational model with 2.5D lattice structures fabricated by AM. Typical defects such as surface roughness and pores were implemented into the lattice structures. The model is able to simulate the mechanical response of lattice structures under different (i) strut diameters, (ii) surface roughness, (iii) porosity, and (iv) pore locations. AlSi10Mg and Inconel 718 are used in the model to study the effect of strut diameters, surface roughness and porosity defects.
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M3 - Conference contribution
AN - SCOPUS:85105652662
T3 - Proceedings of the 2020 IISE Annual Conference
SP - 896
EP - 901
BT - Proceedings of the 2020 IISE Annual Conference
A2 - Cromarty, L.
A2 - Shirwaiker, R.
A2 - Wang, P.
PB - Institute of Industrial and Systems Engineers, IISE
T2 - 2020 Institute of Industrial and Systems Engineers Annual Conference and Expo, IISE 2020
Y2 - 1 November 2020 through 3 November 2020
ER -