Realization and assessment of metal additive manufacturing and topology optimization for high-precision motion systems

Delissen, Arnoud; Boots, Elwin; Laro, D.A.H.; Kleijnen, Harry; Keulen, Fred van; Langelaar, Matthijs

doi:10.1016/j.addma.2022.103012

Cited by 7 publications

(2 citation statements)

References 32 publications

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“…They observed that, by applying symmetry and applying the other constraints, they were able to achieve a 7% reduction in the mass of the part, while its strength and stiffness remained unchanged. In contrast, another study [58] began with the design of the part by directly applying symmetry, and then carried out the topological study. It was not strictly necessary, but they observed that it is more convenient to have the center of gravity near the midpoint of the mandrel, which made them impose symmetry from the beginning.…”

Section: Use Of Symmetry For Design In Additive Metal Fabricationmentioning

confidence: 99%

Symmetry and Its Application in Metal Additive Manufacturing (MAM)

Uralde

Veiga

Aldalur³

et al. 2022

Symmetry

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Additive manufacturing (AM) is proving to be a promising new and economical technique for the manufacture of metal parts. This technique basically consists of depositing material in a more or less precise way until a solid is built. This stage of material deposition allows the acquisition of a part with a quasi-final geometry (considered a Near Net Shape process) with a very high raw material utilization rate. There is a wide variety of different manufacturing techniques for the production of components in metallic materials. Although significant research work has been carried out in recent years, resulting in the wide dissemination of results and presentation of reviews on the subject, this paper seeks to cover the applications of symmetry, and its techniques and principles, to the additive manufacturing of metals.

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Section: Use Of Symmetry For Design In Additive Metal Fabricationmentioning

confidence: 99%

Symmetry and Its Application in Metal Additive Manufacturing (MAM)

Uralde

Veiga

Aldalur³

et al. 2022

Symmetry

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“…To facilitate the use of general design domains with complex shape, such as guide vanes, and automate the mesh generation process, a voxelization technique [132] implemented in the computational library PETSc [106] is utilized herein. A similar voxelization technique has previously been used for domain initiation in PETSc using a Python wrapper [105], to construct lattice support structures [22], in buckling-constrained topology optimization [17], to represent magnetic actuators for design of high-precision motion systems [29], and for high-resolution topology optimization on a GPU [123]. However, the voxelization technique is not widely used in the TO literature, and no multiphysics applications have been found.…”

Section: Introductionmentioning

confidence: 99%

Internal Cooling Design Using Multiphysics Topology Optimization

Lundgren

2024

Linköping Studies in Science and Technology. Dissertations

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The author's contributionThe development of the topology optimization models employed in all papers was undertaken by the author in collaboration with co-authors. The author held the principal responsibility for conceptualizing, deriving, simulating, and analyzing the models and the results. All MATLAB implementations in Paper I and the majority of the PETSc/C++ implementations in Papers IV and V were programmed by the author. The CFD analyses in Papers IV and V were conducted by Hossein Nadali Najafabadi, and the numerical examples in Papers II and III were completed by Carl-Johan Thore, based on MATLAB implementations by the author. Papers I, IV and V are credited to the thesis author, reviewed by their respective co-authors, while Papers II and III are co-authored by the thesis author. xiv

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Integrated topology and controller optimization using the Nyquist curve

Delissen

Keulen

Langelaar

2023

Struct Multidisc Optim

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The design of high-performance mechatronic systems is very challenging, as it requires delicate balancing of system dynamics, the controller, and their closed-loop interaction. Topology optimization provides an automated way to obtain systems with superior performance, although extension to simultaneous optimization of both topology and controller has been limited. To allow for topology optimization of mechatronic systems for closed-loop performance, stability, and disturbance rejection (i.e. modulus margin), we introduce local approximations of the Nyquist curve using circles. These circular approximations enable simple geometrical constraints on the shape of the Nyquist curve, which is used to characterize the closed-loop performance. Additionally, a computationally efficient robust formulation is proposed for topology optimization of dynamic systems. Based on approximation of eigenmodes for perturbed designs, their dynamics can be described with sufficient accuracy for optimization, while preventing the usual threefold increase of additional computational effort. The designs optimized using the integrated approach have significantly better performance (up to 350% in terms of bandwidth) than sequentially optimized systems, where eigenfrequencies are first maximized and then the controller is tuned. The proposed approach enables new directions of integrated (topology) optimization, with effective control over the Nyquist curve and efficient implementation of the robust formulation.

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Realization and assessment of metal additive manufacturing and topology optimization for high-precision motion systems

Cited by 7 publications

References 32 publications

Symmetry and Its Application in Metal Additive Manufacturing (MAM)

Symmetry and Its Application in Metal Additive Manufacturing (MAM)

Internal Cooling Design Using Multiphysics Topology Optimization

Integrated topology and controller optimization using the Nyquist curve

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