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TOPSIS-Based Multi-Objective Shape Optimization for a CRT Funnel

TOPSIS 를 적용한 CRT 후면유리의 다중목적 형상최적설계

  • 이광기 (브이피 코리아) ;
  • 한정우 (한국기계연구원 시스템엔지니어링연구본부) ;
  • 한승호 (동아대학교 기계공학과)
  • Received : 2010.12.10
  • Accepted : 2011.04.13
  • Published : 2011.07.01

Abstract

The technique for order preference by similarity to ideal solution (TOPSIS) is regarded as a classical method of multiple attribute decision making (MADM), often used to solve various decision-making or selection problems. It is based on the concept that the chosen alternative should have the shortest distance from the positive ideal solution and the farthest distance from the negative ideal solution. The TOPSIS can be applied to a design process for carrying out multi-objective shape optimization wherein the best and worst alternatives are to be decided. In this paper, multi-objective shape optimization using the TOPSIS and Rational Bezier curve was applied to the funnel of a cathode-ray tube (CRT). In order to minimize the weight and first principal stress, a new multi-objective shape optimization methodology is proposed, wherein the relative-closeness coefficients of the TOPSIS are defined as the performance indices of a multi-objective function and evaluated by response surface models. This methodology enables the designer to decide on the best solution from a number of design specification groups by examining the various conflicts between the weight and the first principal stress.

Keywords

TOPSIS(Technique for Order Preference by Similarity to Ideal Solution);Multi-objective Shape Optimization;CRT Funnel;Design of Experiments;Rational Bezier Curve;MADM(Multi-Attribute Decision Making)

Acknowledgement

Supported by : 동아대학교

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