T. Phuor and G. H. Yoon. International Journal for Numerical Methods in Engineering (2022). In this paper, a novel algorithm for computing the derivatives of eigensolutions of asymmetric damped systems with distinct and repeated eigenvalues is developed without using second-order derivatives of the eigenequations, which has a significant benefit over the existing publish...
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관리자 2023-12-27 37
M. Shin, and G. H. Yoon. Computational Mechanics 70, no. 5 (2022): 993-1011. This research develops a new acoustic topology optimization scheme with a model order reduction called the Multifrequency Quasi Static Ritz Vector (MQSRV) method which effectively reduces the size of the system matrix for the calculating responses as well as sensitivity values in frequency domain. Computing the acc...
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관리자 2023-12-27 30
H. M. Lee, D. H. Kim, D. Y. Kim, M. S. Kim, J. Park, and G. H. Yoon. Composite Structures 295 (2022): 115755. In the present study, composite sandwich structures were investigated to evaluate the effects of porous foams and surface patterns on structural stability and mass reduction of the composite sandwich structures. The composite structures used in the experiments consisted of...
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관리자 2023-12-27 42
H. S. Koh, D. Y. Shin, and G. H. Yoon. International Journal of Impact Engineering 166 (2022): 104238. This research develops a new formulation for final penetration depth of projectile on granular material. Although several relevant researches exist to estimate final penetration depths of blunt projectiles, estimation of final penetration depth of sharp projectiles is still difficult. Dire...
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관리자 2023-12-27 48
D. Y. Kim, Y. J. Woo, K. Kang, and G. H. Yoon. Mechanical Systems and Signal Processing 172 (2022): 108914. This paper develops a new nonlinear transformation-based augmentation method for Convolutional Neural Network (CNN) approach with vibration signals of simple, small scale and elementary reference models for the classification or prediction of vibration signals of perplex healthy or da...
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관리자 2023-12-27 17
J. W. Kim and G. H. Yoon. Engineering Optimization 54, no. 4 (2022): 651-664. The present study presents the application of a structural optimization scheme for a Double Split Hollow Sphere (DSHS) based acoustic cloaking structure for irregular surfaces. For acoustic wave cloaking, many scientific devices utilizing phase differences have been developed. Considering the irregular surfaces of...
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관리자 2023-12-27 18
G. H. Yoon. Computer Methods in Applied Mechanics and Engineering 393 (2022): 114696. This study develops a new topology optimization scheme using coupled forward and coupled sensitivity analyses to manipulate and control time-varying particle trajectories in transient laminar flow, that is transient fluid–particle assemblies. It is an important scientific and engineering subject to m...
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2022 [115] Effect of Dynamic Loading Conditions on Maximizing Energy Dissipation of Metallic Dampers관리자 2023-12-27 39
J. W. Park, J. H. Yoon, G. H. Yoon, and Y. M. Lim. Applied Sciences 12, no. 6 (2022): 3086 Diversification of the optimum designs is practical for metallic dampers due to their advantages of low cost, stability, and ease of fabrication. Therefore, this paper presents a novel approach—dynamic optimization—to derive various optimum shapes of metallic dampers th...
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관리자 2023-12-27 37
J. Sung, H. M. Lee, G. H. Yoon, S. Bae, and H. So. International Journal of Precision Engineering and Manufacturing-Green Technology (2022): 1-12. Polymer surfaces with wettability gradient were fabricated using three-dimensional (3D) printing technology to control the velocity of droplets on the surfaces. A microscale pattern of a semicircular casting mold was created layer-by-layer using ...
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관리자 2023-12-27 42
K. H. Kim and G. H. Yoon. Structural and Multidisciplinary Optimization 65, no. 2 (2022): 47. In this study, we developed an acoustic topology optimization using moving morphable components (MMCs) for the design of two-dimensional sound reduction structures. MMC-based topology optimization has been developed for structural topology optimization; however, no extant ...
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관리자 2023-12-27 22
H. M. Lee, K. K. Lee, and G. H. Yoon. Thin-Walled Structures 171 (2022): 108686. Composite material has been widely used in the engineering field because of its excellent fatigue and corrosion resistance and good impact resistance. However, the structural instability of composite structure is observed due to the thermal buckling phenomena when applied wit...
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관리자 2023-12-27 20
S. Hur, H. Choi, G. H. Yoon, N. W. Kim, D.-G. Lee, and Y. T. Kim. Scientific Reports 12, no. 1 (2022): 1485. The development of a new ultrasonic transducer capable of improved focusing performance has become a necessity to overcome the limitations of conventional ultrasonic transducer technology. In this study, we designed and optimized a metasurface piezoelectric ...
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관리자 2023-12-27 9T. Phuor and G. H. Yoon. Structural Engineering and Mechanics 81, no. 4 (2022): 411-428. This paper presents the Campbell diagram analysis of the rotordynamic system using the full order model (FOM) and the reduced order model (ROM) techniques to determine the critical speeds, identify the stability and reduce the computational time. Due to the spin-speed...
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관리자 2023-12-27 41
B. Yi, G. H. Yoon, and X. Peng. Engineering Optimization 53, no. 12 (2021): 2088-2107. Coated structures are structures with a solid thin-walled coating enclosing substrates. Coated structures with porous substrates (infills) are often adopted in additive manufacturing to reduce the material cost and printing time, while improving robustness against local bucking, unknow...
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관리자 2023-12-27 40
S. G. Sim, Y. J. Woo, D. Y. Kim, S. J. Hwang, K. T. Hwang, C. H. Lee, and G. H. Yoon. Journal of the Mechanical Behavior of Biomedical Materials 124 (2021): 104801. Reliable fracture diagnosis monitoring and analyzing low-frequency transverse vibration data can be achieved through an in-depth understanding of the physical interactions between wave propagation and boundar...
