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Journal of mechanical science and technology v.22 no.2, 2008년, pp.276 - 286   피인용횟수: 1

Multibody approach for tolerance analysis and optimization of mechanical systems

Chun, Hyung-Ho    (Korean Materials and Components Industry Agency   ); Kwon, Sang-Jik    (Division of Electronics Eng., Kyungwon University   ); Tak, Tae-Oh    (Division of Mechanical and Mechatronics, Kangwon National University  );
  • 초록

    A multibody approach is suitable for tolerance analysis of mechanical systems since multibody formulation can directly consider part-level tolerance variables. In this study, procedures for performing tolerance analysis and corresponding sensitivity analysis for spatial multibody systems are proposed. First, statistical formulation for performing multibody system tolerance analysis is developed to obtain system level tolerance for given part-level tolerances. One very useful aspect of the proposed formulation is that in the process of computing system tolerance, the sensitivity of system tolerance with respect to part-level tolerances can be additionally obtained. The kinematics of spatial multibody systems has been redefined in terms of both generalized coordinates and part-level tolerance variables. Tolerances in geometry of a body are specified in terms of the variations in relative locations of joint definition points and relative distance between them. Tolerances in the joint kinematics are defined through variations in vector closure equations and orthogonality equations that are two fundamental constraint equations for most kinematic joints. To demonstrate the validity and effectiveness of the proposed tolerance analysis procedure, tolerance analysis of a spatial 4-bar mechanism and tolerance optimization are performed.


  • 주제어

    Multibody system .   Tolerance analysis .   Kinematic analysis .   Sensitivity analysis .   Optimization.  

  • 참고문헌 (17)

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  • 이 논문을 인용한 문헌 (1)

    1. Choi, Chan-Kyu ; Yoo, Hong-Hee 2009. "Statistical Performance Estimation of a Multibody System Based on Design Variable Samples" 大韓機械學會論文集. Transactions of the Korean Society of Mechanical Engineers. A. A, 33(12): 1449~1454     

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