• Title/Summary/Keyword: Integrated analysis

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Development of a Static and Dynamic Analysis System for Motor-Integrated High-Speed Spindle Systems Using Timoshenko Theory and Finite Element Method (Timoshenko 이론과 유한요소법을 이용한 모터내장형 고속주축계의 정특성/동특성 해석시스템 개발)

  • 이용희;김석일;김태형;이재윤
    • Journal of the Korean Society for Precision Engineering
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    • v.15 no.8
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    • pp.11-16
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    • 1998
  • Recently, the motor-integrated spindle systems have been used to simplify the machine tool structure, to improve the motion flexibility of machine tool, and to perform the high-speed machining. In this study, a static and dynamic analysis system for motor-integrated high-speed spindle systems is developed based on Timoshenko theory, finite element method and windows programming techniques. Since the system has various analysis modules related to static deformation analysis, modal analysis, frequency response analysis, unbalance response analysis and so on, it is useful in performing systematically the design and evaluation processes of motor-integrated high-speed spindle systems under windows GUI environment.

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Automated Finite Element Mesh Generation for Integrated Structural Systems (통합 구조 시스템의 유한요소망 형성의 자동화)

  • Yoon, Chongyul
    • Journal of the Earthquake Engineering Society of Korea
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    • v.27 no.2
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    • pp.77-82
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    • 2023
  • The structural analysis module is an essential part of any integrated structural system. Diverse integrated systems today require, from the analysis module, efficient real-time responses to real-time input such as earthquake signals, extreme weather-related forces, and man-made accidents. An integrated system may also be for the entire life span of a civil structure conceived during the initial conception, developed throughout various design stages, effectively used in construction, and utilized during usage and maintenance. All these integrated systems' essential part is the structural analysis module, which must be automated and computationally efficient so that responses may be almost immediate. The finite element method is often used for structural analysis, and for automation, many effective finite element meshes must be automatically generated for a given analysis. A computationally efficient finite element mesh generation scheme based on the r-h method of mesh refinement using strain deviations from the values at the Gauss points as error estimates from the previous mesh is described. Shape factors are used to sort out overly distorted elements. A standard cantilever beam analyzed by four-node plane stress elements is used as an example to show the effectiveness of the automated algorithm for a time-domain dynamic analysis. Although recent developments in computer hardware and software have made many new applications in integrated structural systems possible, structural analysis still needs to be executed efficiently in real-time. The algorithm applies to diverse integrated systems, including nonlinear analyses and general dynamic problems in earthquake engineering.

윈도우즈 GUI 환경을 이용한 모터내장형 고속주축계의 정특성/동특성 해석시스템 개발

  • 이용희;김석일;이재윤
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 1995.10a
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    • pp.836-840
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    • 1995
  • Recently, the motor-integrated spindle spindle systems have been used to simplify the machine tool structure, to improve the motion flexibility of machine tool, and to perform the high-speed machining. In this study, a static and dynamic analysis system for motor-integrated high-speed spindle systems is developed based on Timoshenko theory, finite element method and windows programming techniques. Since the system has various analysis modules related to static deformation analysis, modal analysis, frequency response analysis, unbalance response analysis and so on, it is useful in performing systematically the design and evaluation processes of motor-integrated high-speed spindle systems under windows GUI encironment.

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Analysis of Combined Yeast Cell Cycle Data by Using the Integrated Analysis Program for DNA chip (DNA chip 통합분석 프로그램을 이용한 효모의 세포주기 유전자 발현 통합 데이터의 분석)

  • 양영렬;허철구
    • KSBB Journal
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    • v.16 no.6
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    • pp.538-546
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    • 2001
  • An integrated data analysis program for DNA chip containing normalization, FDM analysis, various kinds of clustering methods, PCA, and SVD was applied to analyze combined yeast cell cycle data. This paper includes both comparisons of some clustering algorithms such as K-means, SOM and furry c-means and their results. For further analysis, clustering results from the integrated analysis program was used for function assignments to each cluster and for motif analysis. These results show an integrated analysis view on DNA chip data.

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An Analysis on Simulator Scenarios for the Integrated Evaluation when Applied to Teamwork by Deck and Engine Officers

  • Choi, Soon-Man
    • Journal of Advanced Marine Engineering and Technology
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    • v.30 no.7
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    • pp.782-790
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    • 2006
  • The evaluation systems in SHS(Ship Handling Simulator) or ERS(Engine Room Simulator) give trainees the opportunity to feedback how they responded suggesting them the operation result by scores. If SHS and ERS are integrated each other by network to enable the synchronous training for both deck and engine officers these systems need to include inherently the function of integrated evaluation which produces the evaluation score for the team play of deck and engine officers. The integrated evaluation is effective especially when assessing the responses at emergency situation of ship or the matter of efficiency of ship operation even if assessors feel difficult in editing simulation scenarios for integrated evaluation. This study focuses on the property of integrated evaluation and considerations when editing them. It suggests also a useful procedure to estimate whether a scenario for integrated evaluation is reasonable and balanced or not based on the analysis in the proprieties and reasonabilities which are to be prepared by assessors before testing trainees or examinees.

UAV Performance Improvement Using Integrated Analysis and Design Optimization Technology (통합 해석 및 설계 최적화 기술을 이용한 무인기 성능 향상 연구)

  • Kim, Jimin;Nguyen, Nhu Van;Shu, Jung-Il;Maxim, Tyan;Lee, Jae-Woo;Kim, Sangho
    • Journal of the Korean Society for Aviation and Aeronautics
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    • v.21 no.1
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    • pp.30-38
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    • 2013
  • This paper describes the design optimization of Unmanned Aerial Vehicles(UAVs). An optimization framework has been developed and implemented for the conceptual design of UAVs. An integrated design analysis program was developed with several analysis modules such as propulsion, performance, mission, weight, and stability and control. A UAV configuration design optimization was performed by implementing the integrated analysis to enhance the endurance of UAVs. A SQP optimizer was utilized to build an optimization module for this program and sensitivity analysis was performed to determine the trends of shape variables for developing optimization objective. In conclusion, the results indicate that the resulting optimized UAVs configurations show performance improvements over the baseline design and reliable analysis results.

The Analysis Method of Integrated Logistic System using Evolution Strategies and Data Envelopment Analysis (진화전략과 DEA를 이용한 통합 물류 시스템 분석 방법)

  • Um In-Sup;Lee Hong-Chul;Kang Jeong-Yun
    • Journal of the Korea Society for Simulation
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    • v.13 no.4
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    • pp.17-29
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    • 2004
  • The focus of this study is to represent a methodology of analysis for integrated logistic system by means of the Evolution Strategies and Data Envelopment Analysis(DEA). The integrated logistic system is composed of AS/RS (Automated Storages and Retrieval System), AGVs(Automated Guided Vehicle System) and Conveyor System. We design the simulation alternatives with choosing the qualitative critical factors for the each subsystem. Evolution Strategies is used to optimize the quantitative critical factors and responses of each alternative. DEA is applied to measure the efficiency of the alternatives in order to select the optimal operation efficiency scheme. The method of analysis which combines Evolution Strategies with DEA can be used to analyze the qualitative and quantitative critical factors in the integrated logistic systems.

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An Analysis of Factors Affecting Intention of Farmers to Participate in Integrated Export Organizations

  • KIM, Dong-Hwan;CHUN, Chan-Ik
    • The Journal of Industrial Distribution & Business
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    • v.14 no.1
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    • pp.13-20
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    • 2023
  • Purpose: The integrated export organization for agricultural products is an export marketing organization established by joint participation of famers, farmer organizations, and exporters. The purpose of this study is to analyze the factors affecting the intention of farmers to participate in integrated export organizations. Research design, data and methodology: The multiple regression analysis was used to identify factors affecting intention of pear and mushroom farms to participate in the integrated export organizations. Results: It is shown that the lower farm age, the higher the need for consolidation of export companies, and the lower the government support for the integrated export organizations, the higher the willingness to participate in integrated export organizations. However, export experience, export scale, awareness level of integrated export organizations, and check price level did not significantly affect the intention to participate in integrated export organizations. Conclusions: It is desirable to promote export organizations of agricultural products among relatively young farmers and to reform their consciousness through emphasizing education for them. In addition, integrated export organizations should avoid disorderly competition by consolidating export companies. Lastly, governmental policies should be pursued in a direction that enables farmers and export companies to strengthen their competitiveness on their own.

Design of Integrated Address Analysis Mechanism for the Next-Generation Integrated Network (차세대 통합 망을 위한 통합형 주소분석 메커니즘 설계)

  • 신현순;조기성
    • Journal of the Institute of Electronics Engineers of Korea TC
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    • v.41 no.11
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    • pp.39-45
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    • 2004
  • This paper proposes an algorithm of address analysis for the next-generation networks. That is, we present integrated address analysis of the Numbering Plans of public telecommunication networks such as those of the ATM network. The purpose of implementing software for integrated address analysis is to actively and flexibly cope with a large change of information while operating the system and the network. By designing and implementing a database structure and an address analysis algorithm, interworking is possible among part (local) networks that each have a different Addressing Plan within an integrated network. Proposed relational model database structure has effect that do to manage address information of complicated network efficiently. Also, apply in real environment and proved excellency through interworking test to verify mechanism that propose.

Integrated Dynamic Simulation of a Magnetic Bearing Stage and Control Design (자기베어링 스테이지의 동적 거동 통합 시뮬레이션을 통한 제어 설계)

  • Kim, Byung-Sub
    • Journal of the Korean Society of Manufacturing Technology Engineers
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    • v.22 no.4
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    • pp.730-734
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    • 2013
  • The dynamic simulation of machine tools and motion control systems has been widely used for optimization, design verification, control design, etc. There are three main streams in dynamic simulation: structural dynamic analysis based onthe finite element method, dynamic motion analysis based on equations of motion, and control system analysis based on transfer functions. Generally, one of these dynamic simulation methods is chosen and employed for specific purposes. In this study, an integrated dynamic simulation is introduced, in which the structure, motion, and control dynamics are combined together. Commercially well-known software is used in the integrated dynamic simulation: ANSYS, ADAMS, and Matlab/Simulink. Using the integrated dynamic simulation, the dynamics of a magnetic bearing stage is analyzed and the causes of oscillation and noise are identified. A controller design for suppressing a flexible dynamic mode is carried out and verified through the integrated dynamic simulation.