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 2024-01-15 147
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 2024-01-15 161
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...
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관리자 2024-01-15 126
H. M. Lee, D. Y. Shin, and G. H. Yoon. The International Journal of Advanced Manufacturing Technology (2023): 1-11. This study aims to design a stretchable metasurface system that can adaptively change its wettability using additive manufacturing. The system consists of a stretchable specimen with micro-surface patterns and a bi-layer actuator based on compliant mechanis...
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관리자 2024-01-15 126
D. Y. Kim, E. Park, K. Ku, S. J. Hwang, K.T. Hwang, C. H. Lee, and G. H. Yoon. Journal of the Mechanical Behavior of Biomedical Materials 146 (2023): 106077. This study presents a stacked autoencoder (SAE)-based assessment method which is one of the unsupervised learning schemes for the investigation of bone fracture. Relatively accurate health monitoring of bone fractu...
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관리자 2024-01-15 95
K. Ku, K. E. Silva, and G. H. Yoon. Computers & Structures 286 (2023) 107094. Statistical topology optimization (TO) scheme, which statistically records and analyzes local optima at random frequencies of the excitation force, is developed for material damage and open crack. To identify the alternations of stiffness, mass, and strength due to the damages, the structu...
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관리자 2024-01-15 104
J. H. Kim, Y. H. Choi, and G. H. Yoon. Engineering Optimization 55, no. 9 (2023): 1456-1476. This article develops a new topology optimization scheme for finding optimized joints for multiple components. As the optimized topologies for each component are determined by several structural conditions, simultaneously optimizing the joint location as well as the optimized top...
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관리자 2024-01-15 102
G. H. Yoon, M. Takalloozadeh, and P. Esmailpour. Mechanics Based Design of Structures and Machines 51, no. 9 (2023): 5141-5163. One of the effects of creep phenomena in structures is stress relaxation. Owing to this effect, the stiffness of each point is inversely related to the stress at that point, which causes a stress redistribution, a reduction of the maximum s...
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관리자 2024-01-15 117
H. M. Lee, T. H. Kim, and G. H. Yoon. Computational Particle Mechanics (2023): 1-15. In this study, the penetration behavior of a cone-shaped projectile into granular particles was analyzed using simulations based on the discrete element method (DEM). The rate-independent friction force and inertial drag force proportional to the squared projectile velocity are the princ...
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관리자 2024-01-15 127
H. M. Lee, S. J. Han, D. S. Kim, and G. H. Yoon. Journal of Vibration and Control 29, no. 13-14 (2023): 3038-3051. In this study, a genetic algorithm is introduced to determine optimal locations of pendulum dynamic vibration absorbers (PDVAs) in vibrating structures. A PDVA is composed of a pendulum system and spring-mass system, and aims to attenuate structural vibratio...
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관리자 2024-01-12 99
K. H. Kim and G. H. Yoon. Structural and Multidisciplinary Optimization 66, no. 6 (2023): 1-27. In this study, we explore the feasibility of the artificial neural network (ANN) model in the inverse problem that determines the voltage condition for implementing a desired deformation of the dielectric elastomer actuator (DEA). Our main focus is on the effectiveness of two ...
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관리자 2024-01-08 109
S. J. Han, D. H. Kim, and G. H. Yoon. Journal of Low Frequency Noise, Vibration and Active Control 42, no. 2 (2023): 935-951. In this study, an optimized dynamic vibration absorber (DVA) was applied to improve the sound absorption performance and simultaneously attenuate vibrations and structure-borne noise at multiple frequencies. As the size parameters and eigenfrequencies of a DVA demons...
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관리자 2024-01-08 110
J. Shin, Y. Kim, D. Y. Kim, G. H. Yoon, and T. Seo. International Journal of Precision Engineering and Manufacturing (2023): 1-16. Overcoming stairs is an important requirement for mobile robots. Therefore, many studies have been conducted to develop robots with novel stair-climbing mechanisms. A curved-spoke-based stair-climbing robot has been developed to overcome stairs, but had some lim...
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관리자 2024-01-08 114
H. M. Lee, D. Y. Kim, T. H. Kim, J. H. Kim, S. G. Sim, J. Moon, H. Kim, Y. Choi, and G. H. Yoon. Experimental Mechanics 63, no. 3 (2023): 415-427. Background The Japanese invasion of the Korean peninsula lasted from 1592 to 1598, where Japan had the upper hand in infantry warfare based on superior firepower. The representative portable personal firepower weapons were the Japanese Tanegashim...
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관리자 2024-01-08 87
G. H. Yoon. Computer Methods in Applied Mechanics and Engineering 403 (2023): 115729. This study presents a new topology optimization method for transient coupled fluid–structure interaction (FSI) problems. The transient FSI problem is formulated using the monolithic design approach combining the design variables and the governing equations. This new approach allows for the possibilit...
