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Topology optimization of transient thermo-mechanical problems using multiple materials

Günther-Hanssen, Olov LU (2020) In ISRN LUTFD2/TFHF-20/TFHF-5239-SE(1-67) FHLM01 20201
Department of Construction Sciences
Solid Mechanics
Abstract
Topology optimization is a powerful method for finding optimized designs for a variety of problems. In this work, thermo-mechanical problems are studied in particular and solved under transient conductive heat transfer using 2 materials plus void in the optimization.
In the first part of the thesis, the theoretical background for a generic transient thermo-mechanical topology optimization problem is introduced. The thermo-mechanical field is modeled using have a one-way coupling between the temperature field to the displacement field and is solved with the Finite Element Method for small deformations.
To render designs with a minimal length scale and clear boundaries, design
filtering is used together with a robust formulation, which is... (More)
Topology optimization is a powerful method for finding optimized designs for a variety of problems. In this work, thermo-mechanical problems are studied in particular and solved under transient conductive heat transfer using 2 materials plus void in the optimization.
In the first part of the thesis, the theoretical background for a generic transient thermo-mechanical topology optimization problem is introduced. The thermo-mechanical field is modeled using have a one-way coupling between the temperature field to the displacement field and is solved with the Finite Element Method for small deformations.
To render designs with a minimal length scale and clear boundaries, design
filtering is used together with a robust formulation, which is reliant on Heaviside projections.
The second part goes more into the details of the implementation in Matlab and the test cases used as well as a real-world application: optimizing a thermally actuated disassembly mechanism.
The results are verified against external previous results and are similar in the features.
The optimal design for the real-world application is from a topology optimization perspective satisfactory but shows very small displacements under the thermal load. As future work, large deformations are suggested to be implemented. (Less)
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author
Günther-Hanssen, Olov LU
supervisor
organization
course
FHLM01 20201
year
type
H3 - Professional qualifications (4 Years - )
subject
keywords
topology optimization, transient heat transfer, multi-material, thermal actuators
publication/series
ISRN LUTFD2/TFHF-20/TFHF-5239-SE(1-67)
report number
TFHF-5239
language
English
id
9030770
date added to LUP
2020-10-13 15:05:48
date last changed
2020-10-13 15:05:48
@misc{9030770,
  abstract     = {{Topology optimization is a powerful method for finding optimized designs for a variety of problems. In this work, thermo-mechanical problems are studied in particular and solved under transient conductive heat transfer using 2 materials plus void in the optimization.
In the first part of the thesis, the theoretical background for a generic transient thermo-mechanical topology optimization problem is introduced. The thermo-mechanical field is modeled using have a one-way coupling between the temperature field to the displacement field and is solved with the Finite Element Method for small deformations.
To render designs with a minimal length scale and clear boundaries, design
filtering is used together with a robust formulation, which is reliant on Heaviside projections.
The second part goes more into the details of the implementation in Matlab and the test cases used as well as a real-world application: optimizing a thermally actuated disassembly mechanism.
The results are verified against external previous results and are similar in the features.
The optimal design for the real-world application is from a topology optimization perspective satisfactory but shows very small displacements under the thermal load. As future work, large deformations are suggested to be implemented.}},
  author       = {{Günther-Hanssen, Olov}},
  language     = {{eng}},
  note         = {{Student Paper}},
  series       = {{ISRN LUTFD2/TFHF-20/TFHF-5239-SE(1-67)}},
  title        = {{Topology optimization of transient thermo-mechanical problems using multiple materials}},
  year         = {{2020}},
}