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Penalty regulation ...
Penalty regulation of overhang in topology optimization for additive manufacturing
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- Thore, Carl-Johan (författare)
- Linköpings universitet,Mekanik och hållfasthetslära,Tekniska fakulteten
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- Alm Grundström, Henrik (författare)
- Linköpings universitet,Mekanik och hållfasthetslära,Tekniska fakulteten
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- Torstenfelt, Bo (författare)
- Linköpings universitet,Mekanik och hållfasthetslära,Tekniska fakulteten
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- Klarbring, Anders (författare)
- Linköpings universitet,Mekanik och hållfasthetslära,Tekniska fakulteten
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(creator_code:org_t)
- 2019-02-09
- 2019
- Engelska.
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Ingår i: Structural and multidisciplinary optimization (Print). - : SPRINGER. - 1615-147X .- 1615-1488. ; 60:1, s. 59-67
- Relaterad länk:
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https://liu.diva-por... (primary) (Raw object)
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Several filter approaches that introduce additive manufacturing-related overhang constraints in topology optimization exist. However, a drawback of these is that exact satisfaction of overhang constraints produces sharp inward corners resulting in stress singularities. The present paper therefore modifies such filter approaches by a penalty formulation, where the choice of penalty factor regulates how closely the overhang constraint is satisfied. By appropriately choosing certain weight factors in the penalty function, the cost of support structures is also reflected in the formulation in a simple and computationally inexpensive way. The method is demonstrated by parameter studies using the classical MBB beam, using both structured and unstructured meshes.
Ämnesord
- NATURVETENSKAP -- Matematik -- Beräkningsmatematik (hsv//swe)
- NATURAL SCIENCES -- Mathematics -- Computational Mathematics (hsv//eng)
Nyckelord
- Topology optimization; Additive manufacturing; Support structure; Overhang penalty
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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