Joint Tolerance Design by Minimum Sensitivity Theorem

최소민감도이론에 의한 조인트 부재의 공차설계

  • 임오강 (부산대학교 기계공학과 기계기술연구소) ;
  • 류재봉 (부산대학교 기계공학과) ;
  • 박배준 (삼성자동차) ;
  • 이병우 (동의공전 컴퓨터응용설계과)
  • Published : 1998.03.01

Abstract

A general formulation of the long cylinder tolerance design for the joint structure is here presented. The aim of this paper is to calculate the tolerance of joint by defining tolerance as a kind of uncertainty and to obtain the robustness of the joint structure. It is formulated on the bases of the minimum sensitivity theorem. The objective function is the tolerance sensitivity for the Von-Mises stress. It also took into full account the stress, displacement and weight constraints. PLBA(Pshenichny-Lim-Belegundu-Arora) algorithm is used to solve the constrained nonlinear optimization problem. The finite element analysis is performed with CST(Constant-Strain-Triangle) axisymmetric element. Sensitivities for design variables are calculated by the direct differentiation method. The numerical result is presented for the cylindrical structure where the joint tolerance is treated as random variables.

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