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Choi, Jae-Seok,Yoo, Jeong-Hoon,Nishiwaki, Shinji,Terada, Kenjiro 대한기계학회 2007 大韓機械學會論文集A Vol.31 No.3
Many engineering problems require the calculation of effective material properties of a structure which is composed of repeated micro-structures. The homogenization method has been used to calculate the effective (homogenized) properties of composites and several homogenization procedures for different physical fields have been introduced. This research describes the modified homogenization technique for magnetostatic problems. Assuming that the material is periodically repeated, its effective permeability can be prescribed by calculating the homogenized magnetic reluctivity using the finite element analysis of the micro unit cell. Validity of the suggested method is confirmed by comparing the results by the energy based method as well as the widely known homogenization method.
재료분포의 연속적인 근사를 이용한 위상최적설계 방법의 비교연구
임영석(YoungSeok Lim),민승재(Seungjae Min),유정훈(Jeonghoon Yoo),寺田賢二郞(Kenjiro Terada),西脇眞二(Shinji nishiwaki) 대한기계학회 2005 대한기계학회 춘추학술대회 Vol.2005 No.5
In this paper, continuous approximation of material distribution (CAMD) which is an effective to prevent numerical instabilities occurring is applied to topology optimization using simple isotropic material with penalization . The optimization problem is formulated to minimize the compliance such as general stiffness design problem. we confirm an effect of CAMD in SIMP and compare results of CAMD in HDM with that of CAMD in SIMP through two representative numerical examples.
니시무라, 신야,보다, 사토시,테라다, 신지,사쿠라이, 노리코,Nishimura, Shin-ya,Boda, Satoshi,Terada, Shinji,Sakurai, Noriko The Korean Housing Association 2015 한국주거학회 논문집 Vol.26 No.6
Since 1997, Dr. Shin-ya Nishimura has been developing an actual town planning project named the "Gangi Project". Students, inhabitants and local professionals walk around Omotemachi, examine the characteristics of the environment and the inhabitants' way of life, discuss plans and designs for traditional wooden arcades called locally "gangi". Students and inhabitants build the gangi together every year. The purpose of this study is to clarify how an experimental project aiming to preserve a living environment obtains sustainability as an actual town planning exercise. The research hypothesizes that sustainable town planning should include strategies for financial autonomy, active participation of inhabitants, supports from local professionals, an acceptance of changing environments, and responsible construction. The project has been carried out as a part of actual town planning, and continues to create a daily living environment based on the recent economical and industrial situation of the town. By focusing on the influences of the project on the town and inhabitants, the study has revealed the possibility of an actual town planning with small budget, and importance of a collaborative relationship with various participants in order to foster a sense of responsibility regarding the construction. The project also highlights the implication that sustainable town planning creates not only a participatory system but also a collaborative one in which participants take responsibility for the issues involved in the construction process.