A novel W1,∞ approach to shape optimisation with Lipschitz domains

K Deckelnick, PJ Herbert, M Hinze - ESAIM: Control, Optimisation …, 2022 - esaim-cocv.org
This article introduces a novel method for the implementation of shape optimisation with
Lipschitz domains. We propose to use the shape derivative to determine deformation fields …

A continuous perspective on shape optimization via domain transformations

J Haubner, M Siebenborn, M Ulbrich - SIAM Journal on Scientific Computing, 2021 - SIAM
In this article we consider shape optimization problems as optimal control problems via the
method of mappings. Instead of optimizing over a set of admissible shapes, a reference …

[HTML][HTML] Distributed and boundary expressions of first and second order shape derivatives in nonsmooth domains

A Laurain - Journal de Mathématiques Pures et Appliquées, 2020 - Elsevier
We study distributed and boundary integral expressions of Eulerian and Fréchet shape
derivatives for several classes of nonsmooth domains such as open sets, Lipschitz domains …

Null space gradient flows for constrained optimization with applications to shape optimization

F Feppon, G Allaire, C Dapogny - ESAIM: Control, Optimisation and …, 2020 - esaim-cocv.org
The purpose of this article is to introduce a gradient-flow algorithm for solving equality and
inequality constrained optimization problems, which is particularly suited for shape …

Improved discrete boundary type shape gradients for PDE-constrained shape optimization

W Gong, J Li, S Zhu - SIAM Journal on Scientific Computing, 2022 - SIAM
We propose in this paper two kinds of continuity preserving discrete shape gradients of
boundary type for PDE-constrained shape optimizations. First, a modified boundary shape …

Shape optimization of Navier–Stokes flows by a two-grid method

J Li, S Zhu - Computer Methods in Applied Mechanics and …, 2022 - Elsevier
We consider the energy dissipation minimization constrained by steady Navier–Stokes
flows. The nonlinearity of the Navier–Stokes equation causes its numerical solver …

[HTML][HTML] Learning mesh motion techniques with application to fluid–structure interaction

J Haubner, O Hellan, M Zeinhofer, M Kuchta - Computer Methods in …, 2024 - Elsevier
Mesh degeneration is a bottleneck for fluid–structure interaction (FSI) simulations and for
shape optimization via the method of mappings. In both cases, an appropriate mesh motion …

First and second order shape optimization based on restricted mesh deformations

T Etling, R Herzog, E Loayza, G Wachsmuth - SIAM Journal on Scientific …, 2020 - SIAM
We consider shape optimization problems subject to elliptic partial differential equations. In
the context of the finite element method, the geometry to be optimized is represented by the …

[HTML][HTML] Crack propagation in anisotropic brittle materials: from a phase-field model to a shape optimization approach

T Suchan, C Kandekar, WE Weber, K Welker - Engineering Fracture …, 2024 - Elsevier
The phase-field method is based on the energy minimization principle which is a geometric
method for modelling diffusive cracks that are popularly implemented with irreversibility …

Parameter-free shape optimization: various shape updates for engineering applications

L Radtke, G Bletsos, N Kühl, T Suchan, T Rung… - Aerospace, 2023 - mdpi.com
In the last decade, parameter-free approaches to shape optimization problems have
matured to a state where they provide a versatile tool for complex engineering applications …