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Zakhama, R. (author), Abdalla, M.M. (author), Gürdal, Z. (author), Smaoui, H. (author)
Topology optimization of two and three dimensional structures subject to dead and wind loading is considered. The wind loading is introduced into the formulation by using standard expressions for the drag force, and a strategy is devised so that wind pressure is ignored where there is no surface obstructing the wind. A minimum compliance design...
journal article 2010
document
van de Ven, E.A. (author), Hooijkamp, E.C. (author), Langelaar, Matthijs (author), van Keulen, A. (author)
Designing transient thermal mechanical systems is a challenging task. Material can have many different functions: it can provide heat capacity, heat conduction, mechanical stiffness or even function as an actuator. Topology optimization can provide the engineer with valuable insight on such a problem. One of the most popular topology...
conference paper 2015
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Picelli, R. (author), Vicente, W.M. (author), Pavanello, R. (author), van Keulen, A. (author)
This article presents an evolutionary topology optimization method for mean compliance minimization of structures under design-dependent viscous fluid flow loads. The structural domain is governed by the elasticity equation and the fluid by the incompressible Stokes flow equations. When the modelling of a system consists in the interaction of...
conference paper 2015
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Gupta, D.K. (author), Langelaar, Matthijs (author), Barink, M (author), van Keulen, A. (author)
Free-form solar cells are cells of unconventional shapes (e.g. hexagonal, leaf-shaped etc). Their flexible shape adds to the aesthetics of the surroundings as well as allows to place them over objects where conventional solar cells might not fit. Evidently, these cells need to be efficient as well, and one of the important factors that...
journal article 2016
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Langelaar, Matthijs (author)
The potential of topology optimization to amplify the benefits of additive manufacturing (AM), by fully exploiting the vast design space that AM allows, is widely recognized. However, existing topology optimization approaches do not consider AM-specific limitations during the design process, resulting in designs that are not self-supporting....
journal article 2016
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Langelaar, Matthijs (author)
Advances in additive manufacturing (AM) allow economical production of components with unprecedented geometric complexity. This offers exciting opportunities for innovative designs, and particularly topology optimization has been identified as a key technique to fully exploit the capabilities of AM. However, also AM involves manufacturing...
conference paper 2016
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Picelli, R. (author), van Dijk, R. (author), Vicente, W.M. (author), Pavanello, R. (author), Langelaar, Matthijs (author), van Keulen, A. (author)
This paper presents an evolutionary structural topology optimization method for the design of completely submerged buoyant modules with design-dependent fluid pressure loading. This type of structure is used to support offshore rig installation and pipeline transportation at all water depths. The proposed optimization method seeks to identify...
journal article 2017
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Langelaar, Matthijs (author)
Additive manufacturing (AM) offers exciting opportunities to manufacture parts of unprecedented complexity. Topology optimization is essential to fully exploit this capability. However, AM processes have specific limitations as well. When these are not considered during design optimization, modifications are generally needed in post...
journal article 2017
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Ivashko, I. (author), Leus, G.J.T. (author), Yarovoy, Alexander (author)
In this paper, we tackle the problem of selecting the radar node positions to provide an estimate of the target state vector with a prescribed accuracy. The topology optimization problem is formulated as selection of a fixed number of radar node positions from a set of available ones, where the radar observations are modeled by a general non...
journal article 2017
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Verbart, A. (author), Langelaar, Matthijs (author), van Keulen, A. (author)
In this paper, we propose a unified aggregation and relaxation approach for topology optimization with stress constraints. Following this approach, we first reformulate the original optimization problem with a design-dependent set of constraints into an equivalent optimization problem with a fixed design-independent set of constraints. The next...
journal article 2017
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van de Ven, E.A. (author), Verboom, J.M. (author), Ayas, C. (author), Langelaar, Matthijs (author), Maas, Robert (author), van Keulen, A. (author)
abstract 2017
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Yang, Y. (author), Ayas, C. (author), van Keulen, A. (author)
abstract 2017
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Yang, Y. (author), Ayas, C. (author), van Keulen, A. (author)
abstract 2017
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Munro, D.P. (author), Ayas, C. (author), Langelaar, Matthijs (author), van Keulen, A. (author)
abstract 2017
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Langelaar, Matthijs (author)
abstract 2017
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van der Veen, G.J. (author), Langelaar, Matthijs (author), van der Meulen, Stan (author), Laro, Dick (author), Aangenent, Wouter (author), van Keulen, A. (author)
In pursuit of better accuracy, higher speed and larger scale, manufacturers of high-performance devices increasingly rely on components which have been designed with a multidisciplinary approach from the outset. In the context of motion systems, this means that for instance structural mechanics, control engineering and thermal analysis are...
journal article 2017
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Hakkaart, X.D.V. (author), Pronk, J.T. (author), van Maris, A.J.A. (author)
Understanding microbial growth and metabolism is a key learning objective of microbiology and biotechnology courses, essential for understanding microbial ecology, microbial biotechnology and medical microbiology. Chemostat cultivation, a key research tool in microbial physiology that enables quantitative analysis of growth and metabolism under...
journal article 2017
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Groen, J.P. (author), Langelaar, Matthijs (author), Sigmund, O (author), Ruess, M. (author)
This article presents a detailed study on the potential and limitations of performing higher-order multi-resolution topology optimization with the finite cell method. To circumvent stiffness overestimation in high-contrast topologies, a length-scale is applied on the solution using filter methods. The relations between stiffness...
journal article 2017
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Wu, J. (author), Clausen, Anders (author), Sigmund, Ole (author)
Additively manufactured parts are often composed of two sub-structures, a solid shell forming their exterior and a porous infill occupying the interior. To account for this feature this paper presents a novel method for generating simultaneously optimized shell and infill in the context of minimum compliance topology optimization. Our method...
journal article 2017
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Koppen, S. (author), van der Kolk, M. (author), van Kempen, F.C.M. (author), de Vreugd, J (author), Langelaar, Matthijs (author)
The stringent and conflicting requirements imposed on optomechanical instruments and the ever-increasing need for higher resolution and quality imagery demands a tightly integrated system design approach. Our aim is to drive the thermomechanical design of multiple components through the optical performance of the complete system. To this end,...
journal article 2018
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