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Multi-material topology optimization involving simultaneous structural and thermal analyses

Gieljan Vantyghem (UGent) , Veerle Boel (UGent) , Marijke Steeman (UGent) and Wouter De Corte (UGent)
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Abstract
Traditionally, the design of building envelope components is primarily focused on meeting technical requirements rather than finding optimal design solutions. New components are typically generated using numerical models validated by experiments, and the general methodology mainly consists of extensive numerical parametric studies. Since the basic geometrical shape is chosen beforehand, it is not possible to know if an optimum is reached. In view of this, topology optimization has emerged as a new design technique which offers much more design freedom. In this work, topology optimization is used to simultaneously improve the mechanical and heat transfer characteristics of building components. The first study shows that using a density-based method intermediate densities can constitute part of the optimized solution and the choice of certain parameters in the interpolation functions becomes influential. The second study presents a multi-material topology optimization approach in which an additional predefined material is added to the optimization problem. The results of both studies are compared. Finally, a practical case is optimized using this multi-material, multi-physics approach, and an optimized brickwork support bracket is found. Results show that a combined structural and thermal topology optimization approach with multiple materials can provide interesting and innovative design solutions.
Keywords
Topology optimization, Building engineering, Thermal bridging, SIMP, Multi-material design, Interpolation schemes

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Please use this url to cite or link to this publication:

MLA
Vantyghem, Gieljan et al. “Multi-material Topology Optimization Involving Simultaneous Structural and Thermal Analyses.” STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION 59.3 (2019): 731–743. Print.
APA
Vantyghem, G., Boel, V., Steeman, M., & De Corte, W. (2019). Multi-material topology optimization involving simultaneous structural and thermal analyses. STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION, 59(3), 731–743.
Chicago author-date
Vantyghem, Gieljan, Veerle Boel, Marijke Steeman, and Wouter De Corte. 2019. “Multi-material Topology Optimization Involving Simultaneous Structural and Thermal Analyses.” Structural and Multidisciplinary Optimization 59 (3): 731–743.
Chicago author-date (all authors)
Vantyghem, Gieljan, Veerle Boel, Marijke Steeman, and Wouter De Corte. 2019. “Multi-material Topology Optimization Involving Simultaneous Structural and Thermal Analyses.” Structural and Multidisciplinary Optimization 59 (3): 731–743.
Vancouver
1.
Vantyghem G, Boel V, Steeman M, De Corte W. Multi-material topology optimization involving simultaneous structural and thermal analyses. STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION. Springer; 2019;59(3):731–43.
IEEE
[1]
G. Vantyghem, V. Boel, M. Steeman, and W. De Corte, “Multi-material topology optimization involving simultaneous structural and thermal analyses,” STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION, vol. 59, no. 3, pp. 731–743, 2019.
@article{8583215,
  abstract     = {Traditionally, the design of building envelope components is primarily focused on meeting technical requirements rather than finding optimal design solutions. New components are typically generated using numerical models validated by experiments, and the general methodology mainly consists of extensive numerical parametric studies. Since the basic geometrical shape is chosen beforehand, it is not possible to know if an optimum is reached. In view of this, topology optimization has emerged as a new design technique which offers much more design freedom. In this work, topology optimization is used to simultaneously improve the mechanical and heat transfer characteristics of building components. The first study shows that using a density-based method intermediate densities can constitute part of the optimized solution and the choice of certain parameters in the interpolation functions becomes influential. The second study presents a multi-material topology optimization approach in which an additional predefined material is added to the optimization problem. The results of both studies are compared. Finally, a practical case is optimized using this multi-material, multi-physics approach, and an optimized brickwork support bracket is found. Results show that a combined structural and thermal topology optimization approach with multiple materials can provide interesting and innovative design solutions.},
  author       = {Vantyghem, Gieljan and Boel, Veerle and Steeman, Marijke and De Corte, Wouter},
  issn         = {1615-147X},
  journal      = {STRUCTURAL AND MULTIDISCIPLINARY OPTIMIZATION},
  keywords     = {Topology optimization,Building engineering,Thermal bridging,SIMP,Multi-material design,Interpolation schemes},
  language     = {eng},
  number       = {3},
  pages        = {731--743},
  publisher    = {Springer},
  title        = {Multi-material topology optimization involving simultaneous structural and thermal analyses},
  url          = {http://dx.doi.org/10.1007/s00158-018-2095-z},
  volume       = {59},
  year         = {2019},
}

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