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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of the Computational Structural Engineering Institute of Korea
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Journal DOI :
The Computational Structural Engineering Institute
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Volume & Issues
Volume 21, Issue 6 - Dec 2008
Volume 21, Issue 5 - Oct 2008
Volume 21, Issue 4 - Aug 2008
Volume 21, Issue 3 - Jun 2008
Volume 21, Issue 2 - Apr 2008
Volume 21, Issue 1 - Feb 2008
Selecting the target year
Integration of CAE Data Management with PLM by using Product Views
Do, Nam-Chul ; Yang, Young-Soon ;
Journal of the Computational Structural Engineering Institute of Korea, volume 21, issue 6, 2008, Pages 527~533
This paper proposes a product data model and associated process for CAE activities in context of integrated product development. The data model and process enable Product Lifecycle Management(PLM) systems to integrate currently separated CAE activities into the main product development process. The product view concept in the proposed product data model supports independent CAE activities including analysis of various alternatives based on shared product structures with design departments and seamless translation of the CAE result to design product views. The proposed model is validated through an implementation of a prototype PLM system that can integrate and synchronize CAE process with the company-wide product development process.
A Framework for Preliminary Ship Design Process Management System
Jang, Beom-Seon ; Yang, Young-Soon ; Lee, Chang-Hyun ;
Journal of the Computational Structural Engineering Institute of Korea, volume 21, issue 6, 2008, Pages 535~541
As the concurrent engineering concept has emerged along with the support of optimization techniques, lots of endeavors have been made to apply optimization techniques to actual design problems for a holistic decision. Even if the range of design problems which the optimization is applicable to has been extended, most of ship designs still remain in an iterative approach due to the difficulties of seamless integration of all related design activities. In this approach, an entire design problem is divided into many sub-problems and carried out by many different disciplines through complicated internal interactions. This paper focuses on preliminary ship design process. This paper proposes a process centric integrated framework as the first step to establish a workflow based design process management system. The framework consists of two parts; a schedule management part to support a manager to monitor current progress status and adjust current schedule, and a process management part to assist a design to effectively perform a series of design activities by following a predefined procedure. Overall system are decomposed into modules according to the target to be managed in each module. Appropriate interactions between the decomposed modules are designed to achieve a consistency of the entire system. Design process model is also designed on a thorough analysis of actual ship design practice. The proposed framework will be embodied using a commercial workflow package.
Development of PLM Prototype for Conceptual Design of Marine Vessels
Lee, Chan-Woo ; Lee, Jang-Hyun ; Lee, Kyung-Ho ; Lee, Jae-Beom ; Kim, Dae-Seok ; Seo, Heung-Won ;
Journal of the Computational Structural Engineering Institute of Korea, volume 21, issue 6, 2008, Pages 543~553
Shipbuilding is a kind of ETO(Engineering To Order) industry which designs and produces a product in accordance to various requirement of customers, rules and regulations. Recently, the number of ordered ships has been increased by up to two or three times in each domestic shipyards. Most shipyards have been adopted 3D ship CAD, ERP(Enterprise Resource Planning) and APS(Advanced Planning System) to get an efficient product development and manufacturing system. However, not only the effective operation of 3D ship CAD, ERP and APS but also the production efficiency can be achieved only if product information management which can manages the product data is implemented in an integrated environment. Present study has suggested a systematic approach to implement a PLM system to manage the product data in early design shipbuilding. Also, a prototype of PLM is implemented to manage the product data in a basic ship-design. In the prototype system, a product structure and architecture of PLM is considered.
e-Engineering Framework to Support Collaborative Design of Automotive Suspension Systems
Park, Seong-Whan ; Lee, Jai-Kyung ; Lee, Han-Min ;
Journal of the Computational Structural Engineering Institute of Korea, volume 21, issue 6, 2008, Pages 555~561
This paper describes an e-Engineering framework to support collaborative design of automotive suspension systems developed at KIMM(Korea Institute of Machinery and Materials). The e-Engineering framework is proposed and developed on the base of the multi-layered software agents including engineering task agent which is generated from the domain knowledge of experts. The developed framework is aim to widely spread application to the small and medium enterprises by adopting open source technologies such as JADE (Java Agent Development Framework) and by using the independent characteristics related with applicant H/W and 81W system. This framework can provide an integrated design environment to support distributed personnel, design activities and engineering resources during product development process. For the validation of the system's applicability and efficiency, the several practical design processes for automotive suspension systems of RR/FR lower arms and RR cross member are applied and discussed.
Database Schema Design for Integrated Missile Design and Optimization
Lee, Jae-Woo ; Lee, Seung-Jin ; Choi, Seok-Min ; Cho, Guk-Hyun ; Kim, Kwang-Sik ; Lee, Jeong-Oog ; Jung, Karp-Joo ;
Journal of the Computational Structural Engineering Institute of Korea, volume 21, issue 6, 2008, Pages 563~569
In this paper, the missile database system for the multidisciplinary design and optimization framework has been designed and investigated. The requirements of the missiles database are analyzed and the database design concept has been defined first. The data flow among the analysis disciplines is investigated and the Entity-Relation diagram is constructed to develop the database table and to define the database schema. The developed database system is integrated into the missile design framework to perform the store, search and management of the design data during the design and analysis of the missile development, hence the efficiency and validity of the database designed in this study has been demonstrated.
Ubiquitous Marine Structure Inspection System based on Mixed Reality
Lee, Kyung-Ho ; Lee, Jung-Min ; Kim, Dong-Guen ; Han, Young-Soo ;
Journal of the Computational Structural Engineering Institute of Korea, volume 21, issue 6, 2008, Pages 571~578
Ubiquitous has spotlighted in the industry in these days, and automotive industry has tried to build ubiquitous environment like as 'intelligent driver assistance system' in BMW Inc. even though in shipbuilding industry. As the part of Ubiquitous Technology for visualization, Mixed Reality has been adopted in this paper. Augmented reality, a part of mixed reality, could show the mixed real world, overlapping virtual objects. Therefore, it is more realistic than virtual reality that all generated by computer and it is very useful for displaying information. For this reason, we tried to apply augmented reality to inspect marine structure and we developed the inspection assistance system based on mixed reality
Ontology-based Semantic Searching Web Service and Integration with PDM
Hahm, Gyeong-June ; Suh, Hyo-Won ; Yang, Young-Soon ; Choi, Young ;
Journal of the Computational Structural Engineering Institute of Korea, volume 21, issue 6, 2008, Pages 579~587
In collaborative environment, since each agent generally uses different words for the same meaning, there is an obstacle for information sharing. In collaborative product development environment, each agent has different words for representing same product information. As a result, it is hard to share product information in this situation. For solving this problem, semantic-based product information is needed. In this paper, a ontology-based semantic searching system which is able to interact with legacy PDM systems is proposed for product information sharing in collaborative environment Product ontology is represented with OWL format, and the product ontology is processed by Pellet reasoning engine for semantic searching. The system is implemented as a web service which can be integrated with other systems. This paper also introduces the approach with which a PDM system provides a function of semantic search with this search system.
Dynamic Characteristic of A Bi-dirctional Damper Using A Tuned Mass Damper and A Tuned Liquid Column Damper
Lee, Sung-Kyung ; Min, Kyung-Won ; Park, Eun-Churn ;
Journal of the Computational Structural Engineering Institute of Korea, volume 21, issue 6, 2008, Pages 589~596
This study introduces the design of a bi-directional damper using a tuned mass damper(TMD) and a tuned liquid column damper(TLCD) and presents experimental verifications to confirm its control performance. The damper used in this study behaves as a TMD in a specific translational direction and acts as a TLCD in the other orthogonal direction. First, shaking table test is performed to investigate the coupled effect of control forces produced by TMD and TLCD. Then, the parameters that affect to dynamic characteristics of the proposed damper are quantitatively evaluated based on the experimental results. Testing results shows that the damper used in this study produces control forces coupled by TLCD and TMD, as it is excited by waves with an incident angle. Also, it is observed that the damper can be used to reduce bi-directional responses of building structures.
Feasibility Study of MR Elastomer-based Base Isolation System
Jang, Dong-Doo ; Usman, Muhammad ; Sung, Seung-Hoon ; Moon, Yeong-Jong ; Jung, Hyung-Jo ;
Journal of the Computational Structural Engineering Institute of Korea, volume 21, issue 6, 2008, Pages 597~605
The feasibility study of a newly proposed smart base isolation system employing magneto-rheological elastomers(MREs) has been carried out. MREs belong to a class of smart materials whose elastic modulus or stiffness can be adjusted by varying the magnitude of the magnetic field. The base isolation systems are considered as one of the most effective devices for vibration mitigation of civil engineering structures such as bridges and buildings in the event of earthquakes. The proposed base isolation system strives to enhance the performance of the conventional base isolation system by improving the robustness of the system wide stiffness range controllable of MREs, which improves the adaptability and helps in better vibration control. To validate the effectiveness of the MRE-based isolation system, an extensive numerical simulation study has been performed using both single-story and five-story building structures employing base isolated devices under several historical earthquake excitations. The results show that the proposed system outperformed the conventional system in reducing the responses of the structure in all the seismic excitations considered in the study.
Monitoring System For The Subway Structures Using Prestrained FBG Sensors Fixed With Partially Stripped Fibers
Kim, Ki-Soo ;
Journal of the Computational Structural Engineering Institute of Korea, volume 21, issue 6, 2008, Pages 607~613
A monitoring system for the subway structures using prestrained FBG sensors fixed with partially stripped fibers was developed. The sensor packages had pre-strain controllable fixtures. Tensile and compressive strain of the structure could be measured without slip. The FBG sensor system was applied to the concrete lining structure in Taegu subway. Near the structure, the narrow tunnel construction, for the electric power cables and telecommunication cables, started. We wanted to measure the deformations of the subway structures due to the construction by the FBG sensor. The applied sensors had the gauge length of 1 meter to overcome the inhomogeneity of the concrete material with enough length. In order to fix tightly to the structure, the partially stripped parts of the sensor glued to the package and slip phenomenon between fiber and acrylate jacket was prevented. Prestrain of the sensor was imposed by controlling the two fixed points with bolts and nuts in order to measure compressive strain as well as tensile strain. The behavior of subway lining structure could be monitored very well.
An Overview of Information Processing Techniques for Structural Health Monitoring of Bridges
Lee, Jong-Jae ; Park, Young-Soo ; Yun, Chung-Bang ; Koo, Ki-Young ; Yi, Jin-Hak ;
Journal of the Computational Structural Engineering Institute of Korea, volume 21, issue 6, 2008, Pages 615~632
The bridge health monitoring has become an important research topic in conjunction with damage assessment and safety evaluation of structures owing to the improvement of structural modeling techniques incorporating response measurements and the advancements in signal analysis and information processing capabilities. The bridge monitoring systems are generally composed of hardwares such as sensors, data acquisition equipment, data transmission systems, etc, and softwares such as signal processing, damage assessment, display and management, etc. In this paper, the research and development(R&D) activities on the information processing for structural health monitoring of bridges are reviewed. After a brief introduction to the process of bridge health monitoring, various information processing techniques including various signal processing and damage detection algorithms are introduced in detail. Several challenges addressing critical issues in the current bridge health monitoring system and future R&D activities are discussed.