• 제목/요약/키워드: Spatial Form

검색결과 1,204건 처리시간 0.031초

Investigation and Numerical Analysis of Node Connectors in Free-Form Spatial Structures

  • Hwang, Kyung-Ju;Park, Don-U;Park, Sun-Woo;Knippers, Jan
    • 한국공간구조학회논문집
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    • 제7권3호
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    • pp.87-95
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    • 2007
  • The recent completions of free-form spatial structures provide us a very attractive form. To realize such an extraordinary shape, it is absolutely necessary that the connector systems have to be investigated the characteristics of the systems and analyzed with a practicable method. In this context, this research consists of not only literature research but also numerical analysis with selected connector systems, which was adopted in real free-form spatial structures. For numerical analysis, especially, finite element analysis (FEA) is performed with a various test parameter using a commercial program ANSYS. Consequently, the general characteristics of node connectors the moment-rotation-curves are presented by considering a large deformation effect as well as a multi-linear material properties.

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형태생성과 연관된 공간디자인의 형태어휘 추출 (A Study on the Extraction of Formal Vocabularies related with Form Generation in Space Design)

  • 최은희
    • 한국실내디자인학회논문집
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    • 제16권6호
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    • pp.65-76
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    • 2007
  • This research is progressed on the premise that there is a basic rule to organize a space in form generation process. In this study first, antecedent researches are inquired, and formal vocabularies related with form generation in space design are founded. Generally in the organizing process of spatial form designer could have selectively combined formal vocabularies consciously or unconsciously, and these formal vocabularies related with form generation are classified with 'formal elements' and 'spatial relationships'. First, as formal elements '2-dimensional line elements(rectilinear, oblique-linear, curvilinear)' are chosen. Second, formal vocabularies of 'spatial relationships' are 37 extracted from literatures related with architectural language or spatial language. Among them there are several vocabularies with similar or same meaning, they are unitized to representative one. Thereupon 20 vocabularies are finally selected as the formal vocabularies of 'spatial relationships', they are addition, subtraction, intersection, superimposition, juxtaposition, shifting, rotation, reflection, scaling, stretching, shear, bending, folding, distortion, articulation, deconstruction, symmetry, repetition, proportion, and asymmetry.

Delta-form-based method of solving high order spatial discretization schemes for neutron transport

  • Zhou, Xiafeng;Zhong, Changming;Li, Fu
    • Nuclear Engineering and Technology
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    • 제53권7호
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    • pp.2084-2094
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    • 2021
  • Delta-form-based methods for solving high order spatial discretization schemes are introduced into the reactor SN transport equation. Due to the nature of the delta-form, the final numerical accuracy only depends on the residuals on the right side of the discrete equations and have nothing to do with the parts on the left side. Therefore, various high order spatial discretization methods can be easily adopted for only the transport term on the right side of the discrete equations. Then the simplest step or other robust schemes can be adopted to discretize the increment on the left hand side to ensure the good iterative convergence. The delta-form framework makes the sweeping and iterative strategies of various high order spatial discretization methods be completely the same with those of the traditional SN codes, only by adding the residuals into the source terms. In this paper, the flux limiter method and weighted essentially non-oscillatory scheme are used for the verification purpose to only show the advantages of the introduction of delta-form-based solving methods and other high order spatial discretization methods can be also easily extended to solve the SN transport equations. Numerical solutions indicate the correctness and effectiveness of delta-form-based solving method.

A Form-finding Technique for Three-dimensional Spatial Structures

  • Lee, Sang Jin
    • Architectural research
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    • 제15권4호
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    • pp.207-214
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    • 2013
  • A form-finding technique is proposed for three-dimensional spatial structures. Two-step discrete finite element (FE) mesh generator based on computer aided geometric design (CAGD) is introduced and used to control the shape of three-dimensional spatial structures. Mathematical programming technique is adopted to search new forms (or shapes) of spatial structures. For this purpose, the strain energy is introduced as the objective function to be minimized and the initial volume (or the initial weight) is considered as constraint function. Numerical examples are carried out to test the capability of the proposed form-finding techniques and provided as benchmark tests.

건축공간-형태의 이론과 변천에 관한 연구 (A Study on the Theories and Changes of Architectural Spatial Form)

  • 이기승;윤도근
    • 한국실내디자인학회논문집
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    • 제13호
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    • pp.238-248
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    • 1997
  • The spatial form of architecture in the same era has its own common characteristic spatial form. This study is based on this proposition and is focused on how architectural spatial forms have been changed up to now after modern ages(from the beinging of 1900s to the early days of 1990s ; from early modern age, golden modern age, post modern, late modern architecture to recent experimental trend) and how architectural theories of spatial forms will be changed in the future is predicted.

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낙동강변 하항취락의 공간구성에 관한 연구 -밀양시 삼랑진읍 상부(上部)마을을 대상으로- (A Study on the Spatial Form of the Port Settlement of Rivershore in Sangbu Village, Samrangjin)

  • 박중신;조성민;김태영
    • 한국농촌건축학회논문집
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    • 제9권2호
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    • pp.41-48
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    • 2007
  • This paper aims to clarify the Spatial Form of the Port Settlement of Rivershore in Nakdong-river. The web of road is composed of three basic elements, kyeongjeon-seon railroad, inner old coastal street, a narrow gauge railway. The basic road system is composed of Hon-machi dori (Main street) parallel to the coastal line and three perpendicular roads. According to these road patterns, plot of the lands in the block are formed into distinctive trapezoidal shape. To conclude, the Spatial Form of Samrangjin's Port Settlement might explain as a relation of Rivershore's shape and marketplace's spatial form.

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조선 전·중기 주택의 ㄱ자 꺾음부에서 공간기능에 따른 공간형식의 변화 (Change of Spatial Form according to Spatial Function at ㄱ-shaped Corner Spaces of Houses in Early·Middle Joseon Dynasty)

  • 권아송;전봉희
    • 대한건축학회논문집:계획계
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    • 제34권7호
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    • pp.79-88
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    • 2018
  • In the late Koryo Dynasty~early Joseon Dynasty, nationwide distribution of Ondol prompted the formation of ㄱ-shaped corner space. From this background, the spatial form changed according to the space function. In the case where the ondol is located in the bent portion, it would have formed a similar spatial form nationwide at the beginning of the 16th century. Until the middle of the 16th century the receptionists and the family rituals were carried out in the inner of the house, so ㄱ-shaped corner space gradually expanded. Also a special structure type using fultile rafters was used to cover the upper structure of the extended folded space. From the 17th century, ㄱ-shaped corner space was varied from wide and high to narrow and low. In addition to this, the space function of ㄱ-shaped corner is a small hall, a wooden floored room, and the kitchen. And Their spatial form also changes over time.

Reliability analysis of strip footing under rainfall using KL-FORM

  • Fei, Suozhu;Tan, Xiaohui;Gong, Wenping;Dong, Xiaole;Zha, Fusheng;Xu, Long
    • Geomechanics and Engineering
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    • 제24권2호
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    • pp.167-178
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    • 2021
  • Spatial variability is an inherent uncertainty of soil properties. Current reliability analyses generally incorporate random field theory and Monte Carlo simulation (MCS) when dealing with spatial variability, in which the computational efficiency is a significant challenge. This paper proposes a KL-FORM algorithm to improve the computational efficiency. In the proposed KL-FORM, Karhunen-Loeve (KL) expansion is used for discretizing random fields, and first-order reliability method (FORM) is employed for reliability analysis. The KL expansion and FORM can be used in conjunction, through adopting independent standard normal variables in the discretization of KL expansion as the basic variables in the FORM. To illustrate the effectiveness of this KL-FORM, it is applied to a case study of a strip footing in spatially variable unsaturated soil under rainfall, in which the bearing capacity of the footing is computed by numerical simulation. This case study shows that the KL-FORM is accurate and efficient. The parametric analyses suggest that ignoring the spatial variability of the soil may lead to an underestimation of the reliability index of the footing.

향단(香壇)의 건축공간(建築空間) 구성수법(構成手法) 연구(硏究) (A Study on the Spatial Composition of Hyangdan)

  • 노동성;홍대형
    • 건축역사연구
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    • 제8권3호
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    • pp.39-51
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    • 1999
  • The purpose of this study is to establish the theory of the spatial composition that is 'The Structure of Relation' in Korean traditional houses. This study has been focused on the spatial composition of Hyangdan. The form composition is an element defining primitive functions and space and producing aesthetical effects, where 'quality as a substance' is not important but 'quality as a relation' is essential. Quality as a meaningful relationship comes from realization and regulation of visual attributes among form elements. Each form compositional element establishes the hierarchical structure logically with the entire order, In order for the quality of all form compositional elements to be clarified as a meaningful relationship logically, 'compositional concept' which combines a series of form elements into the grammatical dependence to a specific direction, has to be assumed. If the intrinsic relationship among a series of form compositional elements fails to confront with the 'contextual concept' which eventually indicates unique conditions for a place according to the refined compositional concept, the result of form composition never leads to a specific solution

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