• Korean Architects
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• s.556
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• pp.86-87
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• 2015

지난 회에서는 parametric tool의 근간이 되는 기본 개념에 대해 간략하게 논의 하였고, 이를 통하여 삼차원 프로그램상의 형태 구현의 논리와 방법이 어떻게 발전해 왔는지에 대해 이야기 해 보았습니다. 전회에 말씀드렸듯이 이번회에서는 최근 실무에서 가장 많이 사용되고 있는 parametric tool에 대해 간략히 알아보도록 하겠습니다. 참고로 이번 회를 마지막으로 parametric tool의 개략적인 소개는 마치도록 하고 현장감 있는 실무에서의 적용에 대해 이야기 해 보도록 하겠습니다.

• Korean Architects
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• s.554
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• pp.96-97
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• 2015

지난 편에서는 parametric design의 발생과 흐름에 대해 간략하게 이야기 해 보았습니다. 이번 편에서는 parametric design을 하기 위해 고안된 여러 가지 parametric tool들이 바탕을 두고 있는 기본적인 개념 및 그 구성요소 등에 대해 간략하게 이야기를 해보고자 합니다.

• Korean Architects
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• s.558
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• pp.166-171
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• 2015

지난 회까지 3회에 걸쳐서 parametric tool의 정의, 간략한 역사, 그리고 기본적인 구성에 대하여 알아 보았습니다. 이번회부터는 약속드렸듯이 parametric tool이 실제 건축 프로세스에 어떻게 적용이 되는지 각 회별로 사례를 통해 이야기해보도록 하겠습니다.

• Journal of The Korean Digital Architecture Interior Association
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• v.9 no.1
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• pp.31-40
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• 2009

This study is intended to suggest methodologies in theory that is dedicated to improve existing features in BlM tool sets and introduce a new horizon for developing new features in the future so that more functionality can be provided to the work process of architect. To be more utilized of BlM tool sets in a useful way, it is important to make sure to program a calculation method used in the design process which is based on the information provided by architect, such as design item with detailed process and transformed parametric information on warranty data. Finding pros and cons in the usability from the well-known 3D modeling applications and taking highly usable UI features from the existing applications, and using a common wording were carried out. Design architect identifies reusable parametric information and then finds an algorithm between each items so that BlM tool sets can contribute to design field in the future. Therefore, the formula has been developed for the items considering business aspects and architecturing size in the preliminary-design, and design aspects in the schematic design with idendifying inputs and outputs that is necessary to become fixed factors.

• International Journal of CAD/CAM
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• v.6 no.1
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• pp.29-40
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• 2006

The paper presents an optimization system which integrates a parametric design tool, 3D diffraction-radiation analysis and hydrodynamic performance assessment based on short and long term wave statistics. Controlled by formal optimization strategies the system is able to design offshore structure hulls with superior seakeeping qualities. The parametric modeling tool enables the designer to specify the geometric characteristics of the design from displacement over principal dimensions down to local shape properties. The computer generates the hull form and passes it on to the hydrodynamic analysis, which computes response amplitude operators (RAOs) for forces and motions. Combining the RAOs with short and long-term wave statistics provides a realistic assessment of the quality of the design. The optimization algorithm changes selected shape parameters in order to minimize forces and motions, thus increasing availability and safety of the system. Constraints ensure that only feasible designs with sufficient stability in operation and survival condition are generated. As an example the optimization study of a semisubmersible is discussed. It illustrates how offshore structures can be optimized for a specific target area of operation.

• Korean Architects
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• s.582
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• pp.120-129
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• 2017

이번회에는 UIA 2017 Seoul의 Special Session에서 Digital Design and Fabirication섹션에서 Parametric Design이라는 주제로 발표한 내용을 토대로 재구성을 했습니다. 얼마전 한 인터뷰에서 Parametric design에 대하여 설명을 하라는 질문을 받은 적이 있습니다. Parametric tool을 건축설계에 응용한지 벌써 10여년이 흘렀고 저에게는 굉장히 친숙할뿐 아니라 설계와 디자인의 일부라고 생각했던, 그리고 동시에 너무도 많은 내용을 다루며 건축설계의 과정에서 광범위하게 사용되는 parametric design이란 내용을 짧은 시간안에 단 몇 문장으로 배경지식이 없으신 분들에게 설명을 해야 하였기에 조리있게 이야기를 해 드리지 못했던 그다지 유쾌하지 않은 기억이 있습니다. 처음 UIA 관계자로부터 연락을 받았을 때, 지난 10여년동안 경험했던 많은 내용 중 무엇을 말하는게 가장 좋을까 생각을 많이 했습니다. 결국은 몸담았던 회사들에서 참여 했던 화려한 프로젝트들보다는 건축이나 디자인에 종사하지만 parametric design에 대해서 막연한 생각을 가지고 있는 많은 분들이 parametric design이 가지고 있는 가장 근본적인 장점에 대해서 이해할 수 있수 있도록 중요한 개념과 또한 파라메트릭 디자인 프로세스를 적용한 간단한 예에 대해 잠시 살펴봄으로써 파라메트릭 디자인에 대한 이해를 돕고자 하는 바람으로 아래 소개할 프리젠테이션을 준비했습니다.

• Journal of Power System Engineering
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• v.13 no.5
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• pp.46-51
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• 2009

Recently, the shock resistance and dynamic characteristics of hard disk drives have become more important due to their highly increased storage density and miniaturization. In this study, we have developed an ANSYS/Mechanical/LS-DYNA based HDD vibration/shock simulation tool for design engineers. This simulation tool using ANSYS APDL can produce a parametric finite element modeling of HDD automatically and has GUI-based applications using the script program language Tcl/Tk. In the present tool, we adopt the reliable methodology of vibration/shock simulation, which is experimentally verified. It is expected that this simulation tool can make the repetitive computational efforts for the shock-proof design of HDD drastically reduced.

• Korean Journal of Computational Design and Engineering
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• v.14 no.5
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• pp.306-313
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• 2009

This paper presents the unique formation process of a volumetric space with the digital algorithm developed for Voronoi diagram in order to generate an effective parametric architectural form. By applying systematic parameters of architectural conditions within digital parametric tools, the interactions among sub-spaces developed by Voronoi diagram are enhanced by manipulating the spatial structures. In this paper, we discuss how the parametric distributing and zoning geometrical system can support designers in developing a free-formed space, and research on how this system creates a 3D volumetric space. With the in-depth research on the system and structure of Voronoi diagram, the approaches to the application of Voronoi diagram into architectural form generation are clarified to be an effective, creative and successful digital tool. The result of the application of the Voronoi diagram improves the design quality with systematic language in the sense that the sub-regions are created and controlled under the systematic and balanced hierarchy having dynamic relationships among each others with the restoration of the equilibrium of forces and tensions. This 3-dimensional Voronoi diagram provides another means for designers to solve architectural issues and to reinforce their design concepts.

• Korean Journal of Computational Design and Engineering
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• v.3 no.4
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• pp.293-303
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• 1998

The objective of this study is to develop a PC level freeform surface modeling system which explicitly represents information of part geometry. Surface modeler uses nonuniform rational B-spline (NURBS) function with nonuniform knot vector for the flexible modeling work. The results of this study are as follows. 1) By implementation surface modeler through applying representation scheme proposed to represent free-form surface explicity, the technical foundation to develop free-from surface modeling system using parametric method. 2) Besides the role to model geometric shape of a surface, geometric modeler is developed to model arbitrary geometric shape. By doing this, the availability of the modeling system is improved. Geometric modeler can be utilized application fields such as collision test of tool and fixture, and tool path generation for NC machine tool.

• Transactions of the Korean Society of Machine Tool Engineers
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• v.15 no.1
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• pp.39-48
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• 2006

In this paper, polymer composites based sandwich structures like beams and plates are optimised by using parametric study. The structures are composed of fibre reinforced composites for facial material and resin concrete and PVC foam for core materials. The stacking sequences and thickness of the composites are controlled as major parameters to find out the optimal condition for machine tool components. For the plate structure of machine tool bed composites-skined sandwich structure which has several ribs are proposed to enhance bending stiffnesses in two major directions at the same time. Dynamic robustness of a machine tool structure is investigated using modal analysis. From the results optimal configuration and materials for high precesion machine tools are proposed. And the plate was made of fiber reforced composite material and PVC foam.