J. H. Kim and G. H. Yoon. Journal of Mechanical Design 146.11 (2024). This study presents a novel framework for the optimal design of compliant mechanisms, specifically addressing the structural drawbacks of conventional single-point or de facto hinges. The hinges often lead to structural instability and stress concentration while deriving maximum motion. To overco...
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관리자 2024-08-05 98
L. Long, J. W. Kim, R. Zheng, G. H. Yoon and B. Yi. Computers & Structures 302 (2024): 107479 Multi-material phononic crystals hold promise for manipulating elastic wave propagation, enhancing the rigidity of the host structure, and realizing multifunctionality, including electric conduction, sound insulation, and heat diffusion. This paper presents a multi-material ...
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관리자 2024-08-05 96
G. H. Yoon. Computers & Structures 302 (2024): 107471. This study presents a new topology optimization method for transient two-phase fluid-structure interaction (FSI) problem. From a topology optimization point of view, it is formidable challenging to consider the mutual coupling with structure and two-phase flow and the evolution of sharp interface between two...
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관리자 2024-08-05 83
L. Long, J. W. Kim, G. H. Yoon and B. Yi. Smart Materials and Structures 33.8 (2024): 085013. Destructive interference-based metamaterials have shown excellent characteristics in elastic wave manipulation and vibration attenuation. Nevertheless, challenges persist in the application due to limited space and lightweight design, as current metastructures require additional...
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관리자 2024-08-05 80
Y. H. Choi and G. H. Yoon. Journal of Fluid Mechanics 986 (2024): A9. This study presents a new density filter for a pipe-shaped structure and its application to fluid topology optimization. A simple and straight pipe-shaped structure for fluid is preferred for many engineering purposes rather than the perplex manifold structure provided by the topology optimization meth...
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관리자 2024-08-05 82
D. Y. Kim, Y. J. Woo, S. G. Sim, and G. H. Yoon. Journal of Vibration Engineering & Technologies 12.3 (2024): 3213-3230. Purpose This study presents a nonlinear transformation-based data augmentation approach to diagnose delaminations such as interlaminar, through-hole and buckle, in relatively complex composites. The approach uses tailored vibration signal...
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관리자 2024-03-13 189
H. M. Lee, G. H. Yoon, J. Engqvist, M. Ristinmaa and M. Wallin. Mechanism and Machine Theory 195 (2024): 105605. This study considers deployable structures and presents a novel optimization method that aims to improve the stiffness at the fully deployed state. The considered structures consist of curved beams that deploy through buckling when rotated. The optimization ai...
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관리자 2024-03-13 231
T. Y. Ha and G. H. Yoon. Finite Elements in Analysis and Design 235 (2024): 104138. This study examines the phenomenon of intrinsic nature in wave mitigation, specifically focusing on the concept of destructive interference (DI). When waves interact, they can exhibit either destructive interference or constructive interference depending on the phase difference. In the case of mechanica...
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관리자 2024-03-13 161
H. S. Koh and G. H. Yoon. Structural and Multidisciplinary Optimization 67 (3), 33 This paper proposes a novel technique for large-scale partial topology optimization of dynamic engineering structures by utilizing substructuring techniques and repetitive geometry. Partial topology optimization refers to a design domain that only covers a part of the overall ana...
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관리자 2024-03-13 154
L. Long, J. W. Kim and G. H. Yoon. Composite Structures 117859. Vibration isolation is a promise to suppress mechanical vibration from a host structure, similarly, a mechanical vibration absorber, a simple but effective device to attenuate flexural wave propagation, which has been implemented in civil and mechanical engineering. This paper presents a type of composi...
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관리자 2024-03-13 179
H. M. Lee, S. J. Han, M. J. Kim and G. H. Yoon. Smart Materials and Structures 33.3 (2024): 035007. 4D printing has garnered significant attention within the field of engineering due to its capacity to introduce novel functionalities in printed structures through shape-morphing. Nevertheless, there persist challenges in the design and fabrication of intricate struct...
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관리자 2024-03-13 146
R. Zheng, B. Yi, X. Peng and G. H. Yoon. Applied Sciences 14.2 (2024): 657. This paper presents an efficient and compact Matlab code for 2D and 3D topology optimization of multi-materials. We extend a classical 88-line-based educational code to the multi-material problem using the mapping-based interpolation function, with which each material is modeled equally and ...
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관리자 2024-03-13 161
Y. H. Choi and G. H. Yoon. Structural and Multidisciplinary Optimization 66, no. 4 (2023): 91. This paper presents an educational code for topology optimization controlling the trajectory of particle in steady-state laminar fuid. To control the trajectory of particle, fuid motion is optimized by the fuid topology optimization. The one-way forward analysis between fuid and particle and the a...
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관리자 2024-01-15 146
H. S. Koh and G. H. Yoon. Finite Elements in Analysis and Design 227 (2023): 104023. We propose a new Ritz vector-based dynamic substructuring method which substitutes the unit pseudo-forces applied at the adjacent degrees of freedom (DOFs) using distributed forces. One of the main problems of the Ritz vector and unit pseudo-force-based dynamic substructuring method is t...
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관리자 2024-01-15 160
G. H. Yoon and M. K. Kim. Finite Elements in Analysis and Design 225 (2023): 104017. This study introduces a novel topology optimization method for transient two-phase fluid problem with continuous behavior, which remains a challenging task despite advances in computing capabilities. The application of gradient-based optimizer to continuous two-phase fluid systems is com...
