Hanyang University · Engineering
Professor Gil Ho Yoon's research lab specializes in advanced topology optimization methods for multiphysics and structural-acoustic systems, focusing on innovative formulations that overcome numerical instabilities and interface representation challenges. The lab develops robust optimization frameworks—particularly the Element Connectivity Parameterization (ECP) method—for nonlinear and multiphysics problems, enabling efficient design of complex engineering systems without relying on traditional density-based approaches. Their work emphasizes monolithic, unified-domain formulations to improve computational efficiency and accuracy in fluid-structure interaction, acoustic-structure coupling, and thermomechanical systems. The lab also pioneers the integration of commercial finite element software with advanced optimization algorithms for practical engineering applications.
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Abstract The paper presents a gradient‐based topology optimization formulation that allows to solve acoustic–structure (vibro‐acoustic) interaction problems without explicit boundary interface representation. In acoustic–structure interaction problems, the pressure and displacement fields are governed by Helmholtz equation and the elasticity equation, respectively. Normally, the two separate fields are coupled by surface‐coupling integrals, however, such a formulation does not allow for free mat
Abstract This paper outlines a new procedure for topology optimization in the steady‐state fluid–structure interaction (FSI) problem. A review of current topology optimization methods highlights the difficulties in alternating between the two distinct sets of governing equations for fluid and structure dynamics (hereafter, the fluid and structural equations, respectively) and in imposing coupling boundary conditions between the separated fluid and solid domains. To overcome these difficulties, w
Abstract The application of the element density‐based topology optimization method to nonlinear continuum structures is limited to relatively simple problems such as bilinear elastoplastic material problems. Furthermore, it is very difficult to use analytic sensitivity when a commercial nonlinear finite element code is used. As an alternative to the element density formulation, the element connectivity parameterization (ECP) formulation is developed for the topology optimization of isotropic‐har
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