• Proceedings of the Korean Geotechical Society Conference
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• 1991.10a
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• pp.271-288
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• 1991

SMAP-S2 is an advanced too-dimensional , static finite element computer program developed for the geometric and material nonlinear structure-medium interaction analysis. The program has specific applications for modeling geomechanical problems associated with multi-staged excavation or embankment. Theoretical formulations and computational algorithms are presented along with the description of elasto-plastic material models. Nonlinear features of the code are verified by comparing with known solutions or experimental test results. Capabilities of per- and post-processing programs are discussed.

• Journal of the Korean Society for Precision Engineering
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• v.11 no.1
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• pp.157-165
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• 1994

A general-purpose program for automatic two-dimensional finite-element modelling with quadrilateral elements was developed in this research. The conventional looping method employed in the program was introduced with emphasis on a new splitting criterion and a splitting scheme developed for improving the method. Some application examples were given, which show versatility and applicability of the developed program.

• Proceedings of the Computational Structural Engineering Institute Conference
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• 2011.04a
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• pp.388-391
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• 2011

이 논문에서는 인도의 BARC에서 가압중수형 격납건물의 선형탄성 거동 및 균열의 발생형상과 극한내압 평가를 위해서 건설한 1/4 축소모델 격납건물에 대하여 실험한 결과와 유한요소 해석에 의한 결과를 비교 분석하였다. 유한요소 해석은 상용프로그램인 ABAQUS를 이용하였고 각각의 구조재료에 대한 수치 해석모델을 작성하여 내압해석을 수행하였다.

• The korean journal of orthodontics
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• v.27 no.5 s.64
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• pp.815-824
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• 1997

The purpose of this study is to develop the basic algorithm for the finite element method modeling of individual malocclusions. Usually, a great deal of time is spent in preprocessing. To reduce the time required, we developed a standardized procedure for measuring the position of each tooth and a program to automatically preprocess. The following procedures were carried to complete this study. 1. Twenty-eight teeth morphologies were constructed three-dimensionally for the finite element analysis and saved as separate files. 2. Standard brackets were attached so that the FA points coincide with the center of the brackets. 3. The study model of a patient was made. 4. Using the study model, the crown inclination, angulation, and the vertical distance from the tip of a tooth was measured by using specially designed tools. 5. The arch form was determined from a picture of the model with an image processing technique. 6. The measured data were input as a rotational matrix. 7. The program provides an output file containing the necessary information about the three-dimensional position of teeth, which is applicable to several finite element programs commonly used. The program for a basic algorithm was made with Turbo-C and the subsequent outfile was applied to ANSYS. This standardized model measuring procedure and the program reduce the time required, especially for preprocessing and can be applied to other malocclusions easily.

• Explosives and Blasting
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• v.37 no.2
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• pp.1-13
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• 2019

In this study, Rock deformation on the splitting surface was investigated by using the finite element code relating to the blasting in urban area. The maximum principal strain according to the blasting detonation pattern was analyzed by the modeled blast section, and deformation of the splitting surface formed by the numerical analysis and the real blasting were compared. As a result, it was found that the maximum principal strain was observed a difference according to the blasting detonation pattern on the splitting surface, and the splitting surface was showed a similar waveform both the numerical analysis and the real blasting.

• Proceedings of the KIEE Conference
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• 2008.07a
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• pp.846-847
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• 2008

본 논문에서는 유한요소법을 이용한 전력용 변압기의 기초 설계에 대하여 다루고자 한다. 전력용 변압기 설계 및 해석을 위해 원하는 사양의 전력용 변압기 치수결정이 선행되어야 한다. 본 논문에서는 전력용 변압기의 치수결정을 위해 장하분배법을 기반으로 하는 기초 설계 프로그램를 제작하였다. 설계 프로그램을 이용해 결정한 치수에 의해 전력용 변압기를 모델링 하였고, 유한요소법을 이용하여 자계해석을 하였다. 유한요소해석에 의한 각 사양별 전력용 변압기의 자기적 특성값과 장하분배법에 의한 기초 설계 계산값을 비교.검토하였다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.10
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• pp.5950-5954
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• 2014

FEM analysis of cleaning machine was performed. A cleaning machine was designed and measured to develop a cleaning machine with highly improved performance and a real configuration. 3D modeling was conducted using the 3-D design program CATIA V5. In addition, FEM analysis was conducted on the modeled cleaning machine using the ANSYS finite element analysis program and the pressure changes in internal fluid flow were visualized. This result was applied to the new product development of cleaning machines.

• Journal of the Computational Structural Engineering Institute of Korea
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• v.16 no.1
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• pp.59-68
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• 2003

An optimization Program is developed to produce new topologies of plane structures under multiload case. A four-node finite element is used in the response analysis to reduce the computation time and to ultimately achieve practical topology optimization. The bilinear finite element is prone to produce chequer-boarding phenomenon and a simple filtering process is therefore adopted. An artificial material model is employed to represent the structural material and the resizing algorithm based on the optimality criteria is adopted to update the material density parameter during optimization process. With newly developed optimization program, the comparison study has been made between single and multiload cases and its results are described in this paper. From numerical results, it appears that multiload case should be considered to achieve the practical topology optimization.

• Journal of the Society of Naval Architects of Korea
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• v.31 no.4
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• pp.99-108
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• 1994

As a consequent result of our previous paper, "Development of Automatic Data Generation Program for Finite Element Structural Analysis of Oil Tankers"[1], the objective of this paper is to develop an automatic modeling program for the three-dimensional finite element structural analysis of hull modules of general commercial ships, especially oil tankers, bulk carriers, and container ships. Based on the proposed algorithm in [1], the followings are newly added: general applicability for three ship types, automatic mesh division interface with MSC/NASTRAN, direct wave load calculation interface, and Graphic User Interface technology in the process of input data preparation. The usefulness of this procedure is verified by calculation examples. examples.

• Journal of the korean Society of Automotive Engineers
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• v.13 no.1
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• pp.46-56
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• 1991

자동차가 고르지 않은 도로를 주행할시 차체의 각 부분에 일어나는 진동을 고려하기 위해서는 차체 각 부분의 탄성효과를 고려하여야 만족할 만한 결과를 얻을 수 있다. 이 논문에서는 범용 유한요소해석 프로그램과 범용 기구해석 프로그램을 이용하여 자동차의 주행시 일어나는 차체 내의 진동에 대하여 연구하였다. 예제로는 승용차를 이용하였고 차체의 유한요소해석을 한후 그 결과를 범용 기구해석 프로그램에 이용하여 기구해석에 가장 많이 쓰이는 강체 모델의 결과와 탄성을 고려한 모델의 결과를 비교하였다.