• Journal of the Society of Naval Architects of Korea
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• v.35 no.4
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• pp.98-108
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• 1998

Hull design data is currently prepared by a 2D CAD system and re-input to 3D CAD systems specialized for detail design or to a structural analysis system. In this paper, sharing design data among different CAD systems has been studied. Based on STEP methodology, a neutral model is generated from 2D AutoCAD drawings. To handle a geometric data of this model, the non-manifold model of ACIS is used because it can support various CAD data representation such as 2D graphic entities, 3D wireframe, 3D surface model, and solid B-Rep/CSG model. It is observed that a mon-manifold model can easily be transformed to a 3-D wireframe model for the hull detail design system AutoDef or a FE model for the structural analysis system Nastran.

• Proceedings of the Korea Society of Design Studies Conference
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• 2004.10a
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• pp.34-35
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• 2004

• Korean Journal of Construction Engineering and Management
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• v.16 no.4
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• pp.30-40
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• 2015

Two-dimensional drawings are widely used as a communication tool in the construction industry, but they are still hard to be understood by engineers with less experience. A four dimensional CAD drawing is presented based on marker-based augmented reality, for visual assistance, detailed information, and prevention of misunderstanding among users. The developed drawing enables the users to easily understand its contents through the functions augmenting components, providing detailed construction information, and simulating construction process, using the marker in a 2D drawing. A questionnaire-based survey validates the capability of the developed drawing that it improves inexperienced engineers' understanding of the drawings.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.2 no.2
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• pp.33-37
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• 2001

The synthesis of gates of injection-molded parts has been done empirically, since it requires profound knowledge about the gate design,. which is not available to designers through current CAD systems. GATEWAY is a knowledge module which contains knowledge to Permit non-experts as well as mold design experts to generate acceptable gate design of injection-molded parts. A knowledge-based CAD system is constructed by adding the knowledge module, GATEWAY, for gate synthesis and appropriate CAE programs for mold design analysis to an existing geometric modeler to provide designers, at the initial stage, with comprehensive process knowledge for gate synthesis. Performance analysis and feature-based geometric modeling.

• Journal of the Korean Society for Railway
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• v.9 no.3 s.32
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• pp.43-47
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• 2006

• CDE review
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• v.3 no.2
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• pp.59-61
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• 1997

CAD/CAM 관련 자료들을 살펴보면 현재 국내에서 유통, 판매되고 있는 CAD S/W는 30여 가지에 이른다. 이렇게 많은 제품들이 각각의 장, 단점을 가지고 사용자들의 선택을 위해 계속적인 기능 향상을 앞다투고 있다. 이 때문에 물론 선택의 폭은 넓어졌지만, CAD S/W를 처음 도입하거나 기존에 사용중인 S/W를 교체하고자 하는 사용자들은 이렇게 다양한 제품 중에 어떤 것이 가장 적합한 것인가를 결정하기 위하여 많은 노력이 필요하게 되었다. CAD S/W는 그 가격과 기능의 다양함 뿐만 아니라, 일단 한 제품을 사용하는 것으로 결정한 후에는 다시 교체하기 위하여 많은 시간과 노력을 필요로 하기 때문에 그 평가와 선정작업은 매우 중요한 부분이라고 생각된다.

• Journal of the Korean Society for Precision Engineering
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• v.6 no.4
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• pp.32-42
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• 1989

An algorithm and its computer program are developed for the computer aided automatic conversion from 2 dimensional (2-D) design drawings to a 3 dimensional used to generate the tool path of NC machine. The algorithm and its computer program developed were applied to several real objects for their feasibility check and showed satisfactory results. As the results of this study, it was proved that a foundation work to prepare the data base for CAD/CAM integ- ration can be established so as to improve the productivity.

• Computational Structural Engineering
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• v.20 no.4
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• pp.63-68
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• 2007

• Proceedings of the Korea Society for Energy Engineering kosee Conference
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• 2000.04a
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• pp.91-94
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• 2000

• Proceedings of the Korea Society for Energy Engineering kosee Conference
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• 2000.04a
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• pp.131-136
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• 2000