TY - JOUR
T1 - Combined optimization of part topology, support structure layout and build orientation for additive manufacturing
AU - Langelaar, Matthijs
PY - 2018
Y1 - 2018
N2 - Additive manufacturing (AM) enables the fabrication of parts of unprecedented complexity. Dedicated topology optimization approaches, that account for specific AM restrictions, are instrumental in fully exploiting this capability. In popular powder-bed-based AM processes, the critical overhang angle of downward facing surfaces limits printability of parts. This can be addressed by changing build orientation, part adaptation, or addition of sacrificial support structures. Thus far, each of these measures have been studied separately and applied sequentially, which leads to suboptimal solutions or excessive computation cost. This paper presents and studies, based on 2D test problems, an approach enabling simultaneous optimization of part geometry, support layout and build orientation. This allows designers to find a rational tradeoff between manufacturing cost and part performance. The relative computational cost of the approach is modest, and in numerical tests it consistently obtains high quality solutions.
AB - Additive manufacturing (AM) enables the fabrication of parts of unprecedented complexity. Dedicated topology optimization approaches, that account for specific AM restrictions, are instrumental in fully exploiting this capability. In popular powder-bed-based AM processes, the critical overhang angle of downward facing surfaces limits printability of parts. This can be addressed by changing build orientation, part adaptation, or addition of sacrificial support structures. Thus far, each of these measures have been studied separately and applied sequentially, which leads to suboptimal solutions or excessive computation cost. This paper presents and studies, based on 2D test problems, an approach enabling simultaneous optimization of part geometry, support layout and build orientation. This allows designers to find a rational tradeoff between manufacturing cost and part performance. The relative computational cost of the approach is modest, and in numerical tests it consistently obtains high quality solutions.
KW - Additive manufacturing
KW - Build orientation
KW - Design for manufacturing
KW - Overhang angle
KW - Printing direction
KW - Support structures
KW - Topology optimization
UR - http://www.scopus.com/inward/record.url?scp=85040780986&partnerID=8YFLogxK
UR - http://resolver.tudelft.nl/uuid:957510d2-5971-49b7-a7d6-78e3823e9bf4
U2 - 10.1007/s00158-017-1877-z
DO - 10.1007/s00158-017-1877-z
M3 - Article
SN - 1615-147X
VL - 57
SP - 1985
EP - 2004
JO - Structural and Multidisciplinary Optimization
JF - Structural and Multidisciplinary Optimization
IS - 5
ER -