• Journal of Aerospace System Engineering
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• v.18 no.4
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• pp.61-69
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• 2024

With increasing interest in aviation leisure sports, the demand for ultralight aircraft has increased, highlighting the necessity for robust structural design of the aircraft. In response, this study conducted static structural analysis and free-fall analysis of fuselage frame of ultralight aircraft. Robust design and crashworthiness under operational load conditions and vertical impact scenarios were evaluated by assessing maximum stress and safety factors. Analyses were performed using finite element method-based software ANSYS Workbench. Results including stress distribution and strain were analyzed to verify the safety of the designed fuselage frame. Additionally, this study predicted excessive deformation and failure locations of the fuselage frame during vertical drop impacts.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.35 no.3
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• pp.309-316
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• 2011

Canoes are usually made from wood or FRP. However, today environment-friendly materials are preferred, and hulls made of FRP are prohibited in some countries. Polyethylene can be recycled and so is suitable for synthetic canoe construction. We used 3D Boat-Design to determine the hydrostatic properties of the canoe. Flow-structure coupled analysis was performed using ANSYS Workbench R12.1. The hull pressure and passenger weight were considered as canoe loading factors. The key parameters for the canoe are the design variables. The constraints are as follows: (1) The maximum stress must not exceed 50% of the polyethylene yield stress; and (2) the canoe weight must not exceed 50 kg. The optimal structural conditions were obtained by the response optimization process. The components of the canoe hull were manufactured from polyethylene pipes and joined by thermal fusion methods. Tests showed that the polyethylene canoe had better performance than existing canoes.

• Journal of the Microelectronics and Packaging Society
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• v.24 no.2
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• pp.17-21
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• 2017

Horizontal thin-film thermoelectric cooler has been simulated using a commercial software (ANSYS Workbench Thermal-electric). The thermoelectric cooler consists of thin-film n-type $Bi_2Te_3$, p-type $Sb_2Te_3$ thermoelectric elements, and Au electrode, respectively. The hot spot was placed under the center of device which represents Joule heating. Numerical analysis was conducted by geometric variable, and a maximum temperature difference of $13^{\circ}C$ was obtained. As from the simulation parameters, we presented an optimized design for high efficiency cooling.

• Proceedings of the Korean Institute of Surface Engineering Conference
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• 2017.05a
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• pp.118.1-118.1
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• 2017

다이아몬드 코팅은 다이아몬드 자체의 우수한 경도 및 여러 장점을 가진 특성으로 엔드밀과 같은 공구강을 비롯하여 기존 물질의 물리적 경도를 향상 시키는 데 있어서 많은 분야에서 연구 되고 있다. 그 중에서도 활용 방면이 높은 분야는 탄소 섬유 강화 복합체(CFRP)와 같은 난삭재의 절삭가공기술에 있어서 매우 효과적인 성과를 보이고 있다. HF-CVD를 통한 다이아몬드 코팅을 함에 앞서, 전산 해석을 통해 다이아몬드의 코팅에 있어서 결정적인 요소인 온도와 압력을 우선적으로 계산을 하여 다이아몬드가 코팅이 되는 가정 적합한 온도와 압력을 찾은 뒤 실험을 진행 하였다. 전산 해석은 ANSYS Workbench를 이용하여 진행하였다. Workbench내의 프로그램 중 형상을 그리는 것은 Design Modeler, 격자를 구성하는 것은 Mesh, 계산은 FLUENT를 이용하여 진행하였다. 형상의 모델링은 HFCVD장비의 실제모습을 최대한으로 구현하였으며, 다이아몬드 증착 과정에서 일어나는 필라멘트의 온도와 챔버의 냉각 정도 그리고 공정 기체를 적용하여 시뮬레이션을 시행 하였다. 시뮬레이션 결과를 바탕으로 적정 온도 범위와 압력을 기반으로 HF-CVD를 통해 다이아몬드 코팅을 시행 하였다.

• Journal of the Computational Structural Engineering Institute of Korea
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• v.24 no.6
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• pp.601-608
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• 2011

In order to design floating structures, it should be required to evaluate hydrodynamic motions and structural behavior under the wave loadings. Then, structural behavior of floating structures should be evaluated including the effects of wave-induced hydraulic pressure subjected to floating structures. However, there has been a problem to exactly evaluate structural behavior of floating structures since it was difficult to directly connect wave-induced hydraulic pressure resulting from hydrodynamic analysis with structural analysis model. In this study, in order to exactly evaluate structural behavior of floating structures under the wave loading, integrated analysis of hydrodynamic motion and structural behavior was carried out to the large-scaled floating structure. The wave-induced hydraulic pressure resulting from hydrodynamic analysis AQWA were directly mapped to structural analysis model ANSYS bia Workbench interface of ANSYS Inc.. As the results of this study, it was found that the integrated analysis of this study evaluate exactly structural behavior of floating structures under the wave loadings since this method can directly reflect wave-induced hydraulic pressure resulting from hydrodynamic analysis to structural analysis model. Also, as the results of structural behavior evaluation, it was found that the tensile stress on the top slab was maximized at the wave direction of $0^{\circ}$, and tensile stress on the bottom slab was maximized at the wave direction of $45^{\circ}$, respectively.

• Proceedings of the KAIS Fall Conference
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• 2011.05b
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• pp.966-969
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• 2011

본 논문에서는 자동차용 Battery Post Terminal Clamp의 응력감소를 위한 설계에 있어, ANSYS Workbench 11.0을 이용한 유한요소 구조해석을 하였다. 체결 시 볼트 조임에 따라 가해지는 힘에 따른 응력집중 및 변형을 고려하였고, Battery Post Terminal Clamp에 응력이 집중되어 소성변형이 예상되는 부분에 대한 형상을 변형 하였을 때, 발생 응력이 극한 인장 강도 이하로 감소됨을 확인하였다.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2006.10a
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• pp.465-466
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• 2006

• Journal of the Korean Society of Manufacturing Technology Engineers
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• v.19 no.2
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• pp.178-183
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• 2010

Base-mounted type(BMT) driving assembly in CNC machine tools is an indispensable part to improve productivity by reducing tool changeover time and to meet the ever-increasing demand of precision machine tools. This study aimed to perform finite element analysis and geometric parameter optimization to improve the efficiency of BMT driving assembly. First, simulations for three-dimensional structural and vibration analysis were performed using ANSYS/Workbench on the initial geometric models of BMT driving assembly. After analyzing stress and deformation concentration zones, several new geometrical models were designed and evaluated by design of experiments and ANSYS/DesignXplorer. Through a series of analysis-evaluation-modification cycles, it was seen that designed models were effective in determining optimal geometry of BMT driving assembly.

• Proceedings of the Korea Water Resources Association Conference
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• 2011.05a
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• pp.133-133
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• 2011

본 연구에서는 3차원 수치모형을 이용하여 댐붕괴파의 전파특성에 대한 모의를 수행하였다. 적용된 수치모형은 ANSYS CFX(v. 13) 모형으로 진보된 유동해석기법과 편리한 workbench 환경이 결합된 강력한 GUI 환경을 통해 작업하기 편리하며, 빠르고 정확한 해석결과를 제공하는 전산유체역학 도구로 국내외에서 이용되고 있다. 본 연구에서는 기존의 댐 붕괴파 특성 분석과 관련된 수리모형실험(Soares Frazao 등, 2004: Soares Frazao와 Zech, 2008) 자료를 이용하여 모의를 수행하였으며, 지점별 실측자료와 2차원 유한체적모형(정 등, 2009, 2010)에 의한 결과와의 비교를 통해 적용성 검증을 수행하였다. 또한 3차원 모형 적용 시 중요한 매개변수로 고려되는 수로바닥 및 벽면에서의 조도높이 따른 댐 붕괴파의 전파양상을 분석하였다.

• Journal of the Korean Society of Mechanical Technology
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• v.20 no.6
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• pp.929-935
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• 2018

This paper develops a flow control block for a hydraulic system of a tunnel boring machine. The flow control block is a necessary component to ensure stability in the operation of the hydraulic system. In order to know the pressure distribution of the flow control block, the flow analysis was performed using the ANSYS-CFX. It was confirmed that the pressure and flow rate were normally supplied to the hydraulic system even if one of the four ports of the flow control block was not operated. In order to evaluate the structural stability of the flow control block, structural analysis was performed using the ANSYS WORKBENCH. As a result, the safety factor of the flow control block is 1.54 and the structural stability is secured.