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Topology optimised bolt placements

Steen, Håkon Berger
Master thesis
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no.ntnu:inspera:85298202:33283045.pdf (7.601Mb)
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https://hdl.handle.net/11250/2787199
Utgivelsesdato
2021
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  • Institutt for maskinteknikk og produksjon [3186]
Sammendrag
This thesis will focus on the use of optimization algorithms to suggest

an optimal bolt placement with regards to deflection. The work is

inspired by and supposed to be an addition to the design process that

Thomas Røkke and Henrik Hoen Hersleth have been automating. The

input and output of this program are based on this design process, and

these parameters will be defined and discussed later.

The program is supposed to suggest an optimal bolt pattern for subsea

manifold applications where the goal is to reduce the separation in and

around hydraulic tubes. The solution to this problem is not necessarily

a symmetric bolt pattern and this makes it challenging to establish

a simple model to calculate the different deflections. The main focus

of this thesis is to establish and design a model that can be used to

suggest a good bolt pattern. The model will be used to design an

objective function that tries to estimate the deformation in each tube,

and this objective function can be used in optimization algorithms to

find an optimal solution. The results of the different models will be

verified using Finite Element Method (FEM) in the ABAQUS CAE

tool.
 
This thesis will focus on the use of optimization algorithms to suggest

an optimal bolt placement with regards to deflection. The work is

inspired by and supposed to be an addition to the design process that

Thomas Røkke and Henrik Hoen Hersleth have been automating. The

input and output of this program are based on this design process, and

these parameters will be defined and discussed later.

The program is supposed to suggest an optimal bolt pattern for subsea

manifold applications where the goal is to reduce the separation in and

around hydraulic tubes. The solution to this problem is not necessarily

a symmetric bolt pattern and this makes it challenging to establish

a simple model to calculate the different deflections. The main focus

of this thesis is to establish and design a model that can be used to

suggest a good bolt pattern. The model will be used to design an

objective function that tries to estimate the deformation in each tube,

and this objective function can be used in optimization algorithms to

find an optimal solution. The results of the different models will be

verified using Finite Element Method (FEM) in the ABAQUS CAE

tool.
 
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