Volume 24, Issue 8 (August 2024)
Modares Mechanical Engineering 2024, 24(8): 485-498 |
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Jahangiri M A, Attarnejad R, Noei N. Topology Optimization of Structure in the Fluid-Structure Interaction Problem using the Level Set Method. Modares Mechanical Engineering 2024; 24 (8) :485-498
URL: http://mme.modares.ac.ir/article-15-75202-en.html
URL: http://mme.modares.ac.ir/article-15-75202-en.html
1- School of Civil Engineering, University of Tehran
2- School of Civil Engineering, University of Tehran ,attarnjd@ut.ac.ir
3- Leibniz Universität, Hannover, Germany
2- School of Civil Engineering, University of Tehran ,
3- Leibniz Universität, Hannover, Germany
Abstract: (674 Views)
This research focuses on topology optimization of fluid-structure interaction (FSI) problems using the level set method. To couple the fluid and structure equations, the Arbitrary Lagrangian-Eulerian (ALE) description is employed within a monolithic formulation. The use of ALE in FSI problems, while eliminating numerical instabilities caused by the convective term, enhances the speed and accuracy of finite element solutions in fluid-structure interaction. Additionally, considering the fluid in the unsteady state allows for the interpretation of optimal topology at any given moment of the analysis. The objective function of the optimal topology design problem is to minimize the structural compliance in the dry state, subject to a fixed volume of the design domain. To determine the normal velocity in the reaction-diffusion equation (RDE), adjoint sensitivity analysis based on pointwise gradients is used. The results obtained from this approach, compared to other topology optimization methods in the literature, demonstrate higher accuracy and clearer definition of structural boundaries.
Keywords: Topology Optimization, Fluid-Structure Interaction, Level Set Method, Adjoint Sensitivity Analisys, Reaction-Diffusion Equation, Finite Element Method.
Article Type: Original Research |
Subject:
Marine Structures
Received: 2024/05/19 | Accepted: 2024/10/20 | Published: 2024/07/31
Received: 2024/05/19 | Accepted: 2024/10/20 | Published: 2024/07/31
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