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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Korean Journal of Computational Design and Engineering
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Journal DOI :
Society of CAD/CAM Engineers
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Volume & Issues
Volume 20, Issue 4 - Dec 2015
Volume 20, Issue 3 - Sep 2015
Volume 20, Issue 2 - Jun 2015
Volume 20, Issue 1 - Mar 2015
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Education and Application of Modeling on 3D Structure using Geogebra
Chung, Tae-Eun ; Kim, Tae-Hwan ;
Korean Journal of Computational Design and Engineering, volume 20, issue 2, 2015, Pages 93~103
DOI : 10.7315/CADCAM.2015.093
In this study, we organize and explain various ways to construct 3D models in the 2D plane using Geogebra, mathematical education software that enables us to visualize dynamically the interaction between algebra and geometry. In these ways, we construct three unit vectors for 3 dimensions at a point on the Cartesian coordinates, on the basis of which we can build up the 3D models by putting together basic mathematical objects like points, lines or planes. We can apply the ways of constructing the 3 dimensions on the Cartesian coordinates to modeling of various structures in the real world, and have chances to translate, rotate, zoom, and even animate the structures by means of slider, one of the very important functions in Geogebra features. This study suggests that the visualizing and dynamic features of Geogebra help for sure to make understood and maximize learning effectiveness on mechanical modeling or the 3D CAD.
Research on Deleting the Overlapped Geometric Entities of a Tire for Enhancing Analysis Performance
Lee, Kang-Soo ;
Korean Journal of Computational Design and Engineering, volume 20, issue 2, 2015, Pages 104~113
DOI : 10.7315/CADCAM.2015.104
In developing a tire, many CAE analyses are performed to make a better tire. But its meshing work is not easy, and it takes much time. One of the reasons of taking much time is that there are many overlapped geometric entities in CAD data that are modeled in CAD system by CAD engineers. In this study, we studied about the features of the overlapped geometric entities, and the method to find out and delete them. I developed a program using the proposed algorithm, and applied it in meshing tire pattern and tire case. I proved that the time in meshing a tire reduced dramatically by removing overlapped geometric entities by using the developed program.
A Study on the Technical Contents for BIM Design Support
Cho, Hyunjung ; Jang, Jinseok ; Kim, Yeonsoo ;
Korean Journal of Computational Design and Engineering, volume 20, issue 2, 2015, Pages 114~123
DOI : 10.7315/CADCAM.2015.114
The BIM libraries and technical contents in order to develop common technical standards that reflect the contents for a BIM design support should be based. It is essential to redress the technological burden on design office requirements. The technical contents consisted of Material Information, Standard Details and Cost Information are made by system of standard classification. By connecting BIM libraries with each of information including the contents, it derives the consistent BIM data application through the integrated model. In addition, we look forward to introducing and applying BIM more easily through securing common technical contents which remove the pressure of engineering developments of each individual architectural design office and prevent overlapping investments.
A Study for Automated Division of Composite Walls for Quantity Take-off in Construction Document Phase
Park, Seunghwa ; Kim, Heungsoo ; Yoon, Dooyung ;
Korean Journal of Computational Design and Engineering, volume 20, issue 2, 2015, Pages 124~132
DOI : 10.7315/CADCAM.2015.124
When Building Information Modeling (BIM) was introduced at the early stage, it was only utilized as a three-dimensional visualization tool. Nowadays, however, BIM is being studied for increasing design productivity and managing enormous information on building life cycle. One of the representative research is developing `common prototype BIM libraries`. BIM data made of common prototype libraries should be utilized in various ways, quantity takeoff, code checking, energy analysis and so on. However, common prototype BIM libraries are not enough to estimate accurate cost. For example, composite wall libraries should be divided into several single objects, wall structure and finishes, for the quantity takeoff and construction cost calculation. In this paper, we are suggesting an automated division algorithm of composite wall and developing a system prototype for it. This study is expected to reduce extra modeling work and contribute to fast and accurate cost calculation in the construction.
Direction of Policy on Long-term Strategy Development for BIM
Kim, Hong-Su ; Kim, Yong Jun ;
Korean Journal of Computational Design and Engineering, volume 20, issue 2, 2015, Pages 133~144
DOI : 10.7315/CADCAM.2015.133
Introduction of BIM(Building Information Modeling) was led by public institutions, and all buildings over a certain size were obligated to apply BIM. However, through various attempt to apply BIM to actual practice, people had doubt whether it is a usable technology in reality appeared. Therefore, this study investigated cases about implementation strategies of foreign countries, and conducted survey on BIM performances and preparation in architectural design firms. On the basis of this, it suggests the long-term development strategy of BIM and the basic direction of road map to adopt BIM effectively to domestic architectural design market. After considering the cases abroad and the results of survey, it is identified that incentive policies supporting finance and education should be carried out together with partially obligation method led by government in order to introduce BIM into architectural design market effectively by reflecting current situation of architectural design firms.
Development of a System for Visualization of the Plant 3D Design Data Based on ISO 15926
Jeon, Youngjun ; Kim, Byung Chul ; Mun, Duhwan ;
Korean Journal of Computational Design and Engineering, volume 20, issue 2, 2015, Pages 145~158
DOI : 10.7315/CADCAM.2015.145
ISO 15926 is an international standard for the sharing and integration of plant lifecycle information. Plant design data consist of logical configuration, equipment specifications, 2D piping and instrument diagrams (P&IDs), and 3D plant models (shape data). Although 3D computer-aided design (CAD) data is very important data across the plant lifecycle, few studies on the exchange of 3D CAD data using ISO 15926 have been conducted so far. For this, we analyze information requirements regarding plant 3D design in the process industry. Based on the analysis, ISO 15926 templates are defined for the representation of constructive solid geometry (CSG) - based 3D design data. Since system environments for 3D CAD modeling and Semantic Web technologies are different from each other, we present system architecture for processing and visualizing plant 3D design data in the Web Ontology Language (OWL) format. Through the visualization test of ISO 15926-based 3D design data for equipment with a prototype system, feasibility of the proposed method is verified.
Digital Content Interactions Using RFID/NFC-based Tangible Interfaces in Augmented Reality Environments
Seo, Dong Woo ; Lee, Jae Yeol ; Kim, Jae Sung ;
Korean Journal of Computational Design and Engineering, volume 20, issue 2, 2015, Pages 159~170
DOI : 10.7315/CADCAM.2015.159
Radio-Frequency Identification (RFID) or Near Field Communication (NFC) technology has many advantages over other visual interfaces since it does not require line-of-sight alignment, can identify multiple tags simultaneously, and does not destroy the integrity of original objects. In addition, smart devices such as smartphone and smartpad have NFC/RFID readers which can provide mobile and natural interactions with digital and physical contents. Augmented reality has an excellent visual interaction capability with digital contents in a real environment by embedding digital contents into the physical world. In this paper, we propose a new approach to digital content interactions using RFID/NFC-based tangible interfaces in augmented reality environments that utilize invisible interfaces in addition to marker-based visual interfaces. By combining the advantages of invisible and visual interfaces, more intuitive interactions with digital contents can be provided, which can remove the difficulty of using typical AR paddles that are widely used in AR interactions. In particular, a semantic AR ontology is defined to provide more convenient interactions. Through the semantic ontology-based inferencing, physical querying and filtering are effectively supported. We will show the effectiveness and advantage of the proposed approach by demonstrating implementation results.
Development of BIM-based Building Approval Submission System
Yoo, SeungEun ; Kim, KaRam ; Kim, InHan ; Yu, JungHo ;
Korean Journal of Computational Design and Engineering, volume 20, issue 2, 2015, Pages 171~181
DOI : 10.7315/CADCAM.2015.171
Building Information Modeling (BIM) provides many advantages when it is adopted in virtual design construction, to analyze constructability, etc. For this reason, advanced countries have made it mandatory to adopt BIM in public construction projects. The Korea Public Procurement Service announced that from 2016, BIM adoption will be mandatory in every construction project in Korea. Currently, however, it is not possible to fully adopt BIM in the building design process domestically because BIM-based systems have not been used broadly in Korea`s building approval system (Seumter). In this research, four challenges were drawn from a focus group interview. Focusing on tackling one challenge, this paper reviewed previous research into building approval systems and the building approval systems of Singapore, the U.K. and the U.S., and identified elements of the building approval application process and presents a system to create and manage the information. The system supports the creation and management of information and 2D drawings from an IFC-based BIM model. We expect that the system will encourage designers to use BIM from the beginning of the design process and ultimately increase the efficiency of design in a BIM-based project.
A Basic Study on an Application of Quantity Take-Off Requirements for Open BIM-based Schematic Estimation of Architectural Work
Kim, Inhan ; Um, Sung-Gon ; Choi, Jungsik ;
Korean Journal of Computational Design and Engineering, volume 20, issue 2, 2015, Pages 182~192
DOI : 10.7315/CADCAM.2015.182
In recent years, numerous studies have attempted to extract quantity data by using Building Information Modeling (BIM). In terms of open-BIM based quantity take-off at the early design stage, only few studies were conducted in the field of cost engineering. A lack of compatibility of open BIM for information exchange is postulated as the cause. The Industry Foundation Classes (IFC) extension model has been developed to accommodate the interoperability with quantity take-off software. Improvement of open BIM for quantity take-off needs exchange requirements and model guidelines. For this purpose, the quantity data of IFC models were analyzed using BIM analysis tools. This paper also provides a proposal of requirements on open BIM based quantity take-off at the early design stage. Further this study have been develop the interface system for open BIM based quantity take-off requirements with the results on this study.
Scheduling and Cost Estimation Simulation for Transportation and Installation of the Offshore Monopile Wind Turbines
Kim, Boram ; Son, Myeong-Jo ; Jang, Wangseok ; Kim, Tae-Wan ; Hong, Keyyong ;
Korean Journal of Computational Design and Engineering, volume 20, issue 2, 2015, Pages 193~209
DOI : 10.7315/CADCAM.2015.193
For reasons such as global warming, depletion of fossil fuels and the danger of nuclear energy the research and development of renewable energy is actively underway. Wind energy has advantages over another renewable energy in terms of location requirements, energy efficiency and reliability. Nowadays the research and development area is expanded to offshore because it can supply more wind reliability and free from noise pollution. In this study, the monopile offshore wind turbine transportation and installation (T&I) process are investigated. In addition, the schedule and cost for the process are estimated by discrete event simulation. For the simulation, simulation models for various means of T&I are developed. The optimum T&I execution plan with shortest duration and lowest cost can be found by using different mission start day and T&I means.
A Study on Development of Framework Based BIM Guideline System
Han, Jisu ; Lee, Seip ; Jo, Chanwon ; Kim, Gutaek ; Cho, Joowon ;
Korean Journal of Computational Design and Engineering, volume 20, issue 2, 2015, Pages 210~219
DOI : 10.7315/CADCAM.2015.210
As various contractors have been asking BIM data in the construction industry, BIM guidelines and standards has become increasingly important these days. Above all, BIM guidelines should be established properly because it is utilized at the earliest stage of BIM data creation. However, each of the existing BIM guidelines was totally different by contractors, disciplines or phases so that it caused problems about repetitious work, inefficient management and so on. In order to overcome these problems, we suggest integrated management system for BIM guidelines. We firstly collected and analyzed existing guidelines, secondly standardized guideline phrases and lastly constructed data structure of integrated management system. This integrated management system is expected to increase work efficiency to avoid working error for designers and enable easy creation or revision of BIM guidelines for contractors.