EUROPT 2024
Abstract Submission

286. SIMP-Based Topology Optimization Of 3D Magnetic Circuits With Mechanical Constraints

Invited abstract in session WD-7: Optimization applications II, stream Optimization applications.

Wednesday, 11:25 - 12:40
Room: M:I

Authors (first author is the speaker)

1. Zakaria HOUTA
ENSEEIHT, Laplace laboratory
2. Nicolas LEBBE
LAPLACE Laboratory
3. Thomas HUGUET
LAPLACE Laboratory
4. Frédéric MESSINE
LAPLACE-ENSEEIHT-INPT University of Toulouse

Abstract

A topology optimization problem is a problem where the variables allow to define optimally the structure of certain parts of an object. This type of optimization is essential in many applications, such as the design of the structure of aircraft wings or electric motors. In our case, we are interested in optimizing the design of a 3D magnetic circuit which resembles a hall effect thruster. This circuit contains a variable area, which is descretized into small elements, and the optimization has to decide if each of these elements is vacuum or iron. The objective function to be optimized is defined from the magnetic field calculated in a target area. This magnetic field must correspond as well as possible to a fixed objective field, to ensure proper thruster operation.

One of the difficulties encountered in manufacturing topologically optimized magnetostatic structures found by solving the problem described above, is that they are not necessarily mechanically stable. In order to take this mechanical constraint into account, we have developed a SIMP-based topology optimization algorithm which relies on gradient information and on numerical simulations of both the mechanical deformation and the magnetostatic behavior of the structure. By comparing the designs obtained with those from magnetostatic optimization alone, our approach proves effective in obtaining efficient and robust designs.

Keywords

Status: accepted

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