http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
민승재(Seungjae Min),방승현(Seunghyun Bang) 대한기계학회 2004 대한기계학회 춘추학술대회 Vol.2004 No.4
New reliability-based topology optimization method is proposed by utilizing single-loop single vector approach, which approximate searching the most probable point in the probabilistic design domain analytically, to reduce the time cost and dealing with several constraints to handle practical design requirements. To examine uncertainties in the topology design of a structure, the modulus of elasticity of the material and applied loadings are considered as probabilistic design variables. The results of design examples show that the proposed method provides efficiency curtailing the time for the optimization process and accuracy satisfying the specified reliability.
김성훈(Seong Hoon Kim),민승재(Seungjae Min),이상헌(Sang Hun Lee) (사)한국CDE학회 2010 한국 CAD/CAM 학회 학술발표회 논문집 Vol.2010 No.1
Topology optimization has been widely used for the optimal structure design for weight reduction and high performance. Since the result of three-dimensional topology optimization is represented by the discrete material distribution in finite elements, it is hard to interpret from a design point of view. In this paper, the method for interpreting three-dimensional topology optimization result into a series of cross-sectional curve representation is proposed and interfaced with the existing CAD system for the practical use. The concept of node density and virtual grid is introduced to transform element density values into grid density and material boundaries in each cross section are identified based on the element volume rate to satisfy the amount of material specified in the original design intent. Design examples show that three-dimensional topology result can be converted into a form of curve CAD model and the seamless interface with CAD software can be achieved.
황의상(Eysang Hwang),민승재(Seungjae Min) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5
Weight reduction while maintain structural performance is one of the most challenging topics in automotive industry. Recent advances in manufacturing technology enable the automotive body structure to be built with multimaterial. In this paper, multiphase level set model is introduced to represent multi-material boundaries and the optimization problem for minimizing the strain energy is formulated. The proposed method is applied to the design of two-dimensional underbody structure and the usefulness is confirmed.
김성훈(Seong Hoon Kim),민승재(Seungjae Min),이상헌(Sang Hun Lee) (사)한국CDE학회 2009 한국CDE학회 논문집 Vol.14 No.4
Topology optimization has been widely used for the optimal structure design for weight reduction and high performance. Since the result of three-dimensional topology optimization is represented by the discrete material distribution in finite elements, it is hard to interpret from a design point of view. In this paper, the method for interpreting three-dimensional topology optimization result into a series of cross-sectional curve representation is proposed and interfaced with the existing CAD system for the practical use. The concept of node density and virtual grid is introduced to transform element density values into grid density and material boundaries in each cross section are identified based on the element volume rate to satisfy the amount of material specified in the original design intent. Design examples show that three-dimensional topology result can be converted into a form of curve CAD model and the seamless interface with CAD software can be achieved.