• Title/Summary/Keyword: 유한요소해석 소프트웨어

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Development of a Computer-based Training System for Finite Element Method (유한요소법의 컴퓨터 기반 교육시스템 개발)

  • 이재영
    • Journal of the Computational Structural Engineering Institute of Korea
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    • v.12 no.4
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    • pp.607-618
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    • 1999
  • 유한요소법의 강의와 학습을 지원하는 컴퓨터 기반 교육시스템(computer-based training system)을 개발하였다. 이 시스템은 유한요소해석을 요소 모델링에서부터, 최종결과의 계산에 이르기까지 여러 개념과 과정을 가시화하고, 사용자가 직접 상호작용 적으로 실습하고, 해석과정에 개입하여 모의 조작(simulation)하며, 그 반응을 관찰할 수 있는 여러 기능을 갖추고 있다. 이 시스템을 이용하여 실제적인 유한요소해석을 실행 할 수 있다. 따라서 이 시스템을 유한요소법의 보조 교육 재료로 활용할 뿐만 아니라 실제적인 유한요소해석 소프트웨어로 병용함으로써 유한요소법의 교육과 학습의 효과를 높일 수 있다.

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New Methods of Postprocessing for Finite Element Analysis of 3-dimensional Solids (3차원 고체 유한요소해석의 새로운 후처리 방법)

  • 이재영
    • Computational Structural Engineering
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    • v.6 no.4
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    • pp.107-118
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    • 1993
  • New methods of visualizing the data from finite element analyses of 3-dimensional solids were developed in this study. Their efficiency and practicality were examined through their application and implementation into a finite element analysis software. The major effort of the study was to provide a way of representing data inside of volume, which is the most difficult problem in the postprocessing of 3-dimensional solids. Section representation, volume slice and separation, and isosurface representation were proposed for this purpose.

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Improvement with Speed Response of Moving Magnet Type LDM (가동자석형 LDM의 속도응답특성 개선)

  • Maeng, In-Jae;Baek, Soo-Hyun;Kim, Yong;Yoon, Shin-Yong
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.14 no.5
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    • pp.19-26
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    • 2000
  • In this paper, to improve the mechanical response of the Moving Magnet Type LDM, the design of the LDM was optimized to achieve a large force to volume ratio without reduction the force. The model of the LDM and its optimization procedure were developed on the initial assumption that the magnetic circuit is linear. To analyze the magnetic flux distribution throughout the volume of the LDM and the slider back iron, a 2D finite element analysis of the LDM was performed.

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Analysis of Thrust Characteristics of Multi-winding LDM (다권선형 LDM의 추력특성 해석)

  • Maeng, In-Jae;Baek, Soo-Hyun;Kim, Yong;Yoon, Shin-Yong
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.14 no.4
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    • pp.57-64
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    • 2000
  • In this paper, to achieve the constant thrust force of the double side moving-magnet type LDM, the new armature winding of the LDM was proposed so as to restrain the saturation of the center yoke without increasing the mass of LDM. According to analyzing the magnetic flux distribution throughout the air-gap of the LDM, the magnet and winding width (1:0.84) was determined. The 2D finite element analysis was performed for force analysis on air-gap.

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Shape Design based on Topology Optimization for Manufacturing of Lightweight Valve Disc by 3-D Printing (3차원 프린팅에 의한 경량 밸브 디스크 제조를 위한 위상최적화 기반의 형상 설계)

  • Kim, Taehyung
    • Journal of Energy Engineering
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    • v.27 no.4
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    • pp.13-19
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    • 2018
  • In this study, the lightweight design of butterfly valve disc component for power plant based on topology optimization was performed. Here, commercial finite element (FE) analysis software was used. The external shape of the basic disc model was not deformed, and the internal element density was removed to make it lightweight. Optimal design was performed each other after the disc plate and two brackets attached on the surface of the disc were separated. Once the optimal shapes were selected, they were assembled to build up the 3-D lightweight valve disc model. After applying pressure to this model, FE analysis was performed to confirm the structural safety.

Static and Dynamic Finite Element Analyses of a Bulk-Cement Trailer (벌크 시멘트 트레일러의 정동적 유한요소해석)

  • Kim, Jin-Gon;Lee, Jae-Gon
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.36 no.8
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    • pp.945-951
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    • 2012
  • In this study, we analyze the static and dynamic characteristics of a bulk-cement trailer with a simpler structure that carries powders. The commercial software ANSYS is used to prepare a detailed three-dimensional model of the chassis frame and tank body that bear most of the load of a bulk-cement trailer for the finite element analysis. Modal analysis is conducted to examine the dynamic characteristics of the trailer body, and static analysis shows weak links in the structure. Finally, we propose a method to increase the strength of vulnerable areas and to reduce the weight of the trailer by applying the Taguchi method.

Optimization of Fiber Ratio in Laminated Composites for Development of Three-dimensional Preform T-beam Structure (3차원 프리폼 T-빔 구조물의 개발을 위한 적층복합재료 섬유비율의 최적화)

  • Lee, Dong-Woo;Kim, Chang-Uk;Byun, Joon-Hyung;Song, Jung-Il
    • Composites Research
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    • v.30 no.5
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    • pp.297-302
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    • 2017
  • Finite element analysis of T-beam laminate structure under bending-torsional loading was conducted to prevent the delamination which is the major failure behavior on laminated composites. Three-dimensional preform, which is that fabric is braided through thickness direction, is suggested from the laminate analysis. The analysis aimed to optimize the fiber ratio in laminated composites. After it is suggested that guideline for design of T-beam structure using commercial software ANSYS Composites PrePost. The results show that strength of T-beam structure is increased 21.6% when the fiber density along with beam length direction is two times bigger than transverse direction. It is expected that development of high strength T-beam structure using designed three-dimensional preform.

A study on automation of modal analysis of a spindle system of machine tools using ANSYS (ANSYS를 활용한 공작기계 주축 시스템의 진동 모드 해석 자동화에 관한 연구)

  • Lee, Bong-Gu;Choi, Jin-Woo
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.16 no.4
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    • pp.2338-2343
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    • 2015
  • An analytical model was developed in this study and then implemented into a tool for automation of FEA (Finite Element Analysis) of a spindle system for natural frequencies and modes in the universal FEA software, ANSYS. VBA of EXCEL was used for the implementation. It allowed graphic user interfaces (GUIs) to be developed for a user to interact with the tool and, in addition, an EXCEL spreadsheet to be used for data arrangement. A code was developed in the language of ANSYS to generate the geometric model of the spindle system, sequentially to construct the analytical model based on the information in the GUIs, and finally to perform computation for the FEA. Its automation of the model generation and analysis can help to identify a near optimal design of the spindle system under design in minimum time and efforts.

Simplified Shock Response Analysis for Submerged Floating Railway against Underwater Explosion (수중폭발에 의한 해중철도의 간이 충격 응답 해석)

  • Seo, Sung-Il;Sa-Gong, Myung;Son, Seung-Wan
    • Journal of the Korean Society for Railway
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    • v.17 no.2
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    • pp.100-105
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    • 2014
  • To design a submerged floating railway that is safe against underwater explosions, railway behavior must be investigated and clarified. In this paper, shock waves and impulse pressures generated by a charge away from the submerged floating railway are expressed using experimental formulas. The submerged floating railway tethered by mooring lines is modeled as a simply supported beam with elastic springs. Finite element analysis for the beam model subjected to impulse loading is conducted so that the response of the submerged floating railway can be investigated. For design purposes, a simplified analysis method combined with dynamic load factor is proposed for the same model. Maximum deformation and internal forces are calculated and compared with the time dependent analysis results. It is shown that the simplified analysis results show good agreement.

Simulation Analysis of Spatially Arterial Pulse Wave using Two-dimensional Array Sensors with Magnetoresistive Device (2차원 배열 자기저항소자를 이용한 공간 맥진파형의 전산모사 분석)

  • Kim, M.S.;Kim, S.W.;Kim, G.W.;Lee, S.J.;Lee, S.G.;Lee, H.S.;Park, D.H.;Hwang, D.G.;Lee, S.S.
    • Journal of the Korean Magnetics Society
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    • v.15 no.6
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    • pp.307-310
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    • 2005
  • To get the spatial feature of arterial pulse, we designed spatial pulse diagnostic apparatus (SPDA) using a 2-dimensional magnetoresistive sensor array. The magnetic field distribution fur magnet may was simulated using finite element method. We recognized that the field distribution of parallel magnet mays was more sensitive and uniformed than that of perpendicular one. Also the spatial displacements of magnet array were agreed with the output signal of magnetic tunnel junction (MTJ) sensor array.