A transient thermoelastic mathematical model for topology optimization of support structures in additive manufacturing

Funding Agencies|Fundao de Amparo Pesquisa do Estado de So Paulo
This study presents a Topology Optimization (TO) methodology for determining the optimal distribution of support structures in the powder bed fusion Additive Manufacturing (AM) fabrication technology. The support structures enhance thermal dissipation, reducing distortion on overhang surfaces during the build process and improving printability. A novel transient thermoelastic layer-by-layer model simulates the AM process, evaluating temperature and displacement in partially built structures with supports. We propose two new objective functions related to part distortion, perform their adjoint sensitivity analysis, and present a comprehensive set of numerical experiments with different geometries and levels of overhang complexity. The numerical results show non-standard optimal support structures obtained using the proposed TO-AM methodology for different model parameters, including support volume, thermal anisotropy, time discretization method, and building times for each layer.

TEKNIK OCH TEKNOLOGIER Maskinteknik Teknisk mekanik hsv//swe
ENGINEERING AND TECHNOLOGY Mechanical Engineering Applied Mechanics hsv//eng
Topology optimization; Additive manufacturing; Layer-by-layer process; Thermal conductivity; Optimal support structures; Transient thermoelasticity

Thore, Carl-JohanLinköpings universitet,Mekanik och hållfasthetslära,Tekniska fakulteten(Swepub:liu)carth26 (author)
Ausas, Roberto FedericoUniv Sao Paulo, Brazil (author)
Jakobsson, StefanArcam EBM Ctr Excellence, Sweden (author)
Haveroth, Geovane AugustoUniv Estadual Campinas UNICAMP, Brazil (author)
Cuminato, Jose AlbertoUniv Sao Paulo, Brazil (author)
Univ Estadual Campinas UNICAMP, BrazilMekanik och hållfasthetslära (creator_code:org_t)

In:Structural and multidisciplinary optimization (Print): SPRINGER67:31615-147X1615-1488

By the author/editor: Correa, Maicon R ...; Thore, Carl-Joha ...; Ausas, Roberto F ...; Jakobsson, Stefa ...; Haveroth, Geovan ...; Cuminato, Jose A ...

About the subject

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Mechanical Engin ...; and Applied Mechanic ...

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