Optimization tolerancing of surface in flexible parts and assembly: Influence Coefficient Method with shape defects

 
 
 
  • Abstract
  • Keywords
  • References
  • PDF
  • Abstract


    Generally, a mechanical product must fulfill particular functions in accordance with the specification provided by the customer. A designer must find a solution with lower cost to answer the functional requirements. After the design stage, come the prototyping of the parts, but in case of the large structures of automotive and aeronautical parts, this step is impossible because of the large real dimension as well as the behavior of this type of parts during the positioning and during the assembly of all the mechanism.

    The aim of this article is to show the influence of geometrical shape differences in the assembly of flexible components in order to optimize the tolerancing of surface in flexible parts and assembly. first a presentation of the tolerance of deformable mechanisms through the illustration of the general problem, then we propose a new approach which takes into account shape defects based on the Influence Coeficient Method, after that we compare between a case study without takes into account shape defects and another one but this time taking into account shape defects always based on the Influence Coefficient Method.


  • Keywords


    Tolerance Analysis, Deformable Mechanisms, Influence Coefficients Method, Surface Contact, Shape Defects.

  • References


      [1] Liu, S. C., and Hu, S. J., 1997. “Variation Simulation for Deformable Sheet Metal Assemblies Using Finite Element Methods”. Journal of Manufacturing Science and Engineering, 119(3), Aug., pp. 368–374.

      [2] S.C. Liu, S.J. Hu, T.C. Woo, Tolerance analysis for sheet metal assemblies, ASME J. Mech. Des. 118 (1) (1996) 62–67.

      [3] Stricher, A., Champaney, L., Thiebaut, F., Fricero, B., and Chevassus, N., 2011. “Mod` ele simplifi ´ e pour la simulation d’assemblage de plaques planes avec d´ efauts de forme.”. In 12 ` eme Colloque National AIP PRIMECA, no. 1, pp. 1–9.

      [4] Stricher.A, “Tolérancement flexible d’assemblages de grandes structures aéronautiques,” École normale supérieure de Cachan - ENS Cachan, 2013.

      [5] Camelio, J. A., Hu, S. J., and Ceglarek, D., 2003. “Modeling Variation Propagation of Multi-Station Assembly Systems With Compliant Parts”. Journal of Mechanical Design, 125(4), pp. 673–681.

      [6] Dahlstrom .S, L. Lindkvist, “Contact modeling in method of influencecoefficient for variation simulation of sheet metal assemblies”, in: Proceedings of IMECE04, 2004 ASME International Mechanical Engineering Congress and Exposition, Anaheim, CA, USA, November 13–20, 2004 (Paper Number: IMECE2004-61550).

      [7] Dahlstrom. S, J.S. Hu, R. Soderberg, “Identifying variable effects on the dimensional quality of compliant assembly using computer experiments”, in: Proceedings of DETC’02, ASME 2002 Design Engineering Technical Conferences and Computers and Information in Engineering Conference,Montreal, Canada, September 29–October 2, 2002 (Paper Number:DETC2002/DAC-34035).

      [8] Hugues Favreliere“ Tolérancement modal : de la méthodologie vers les spécifications” Université de Savoie, 2009.Francais

      [9] Wooyoung, C, Hyun, C, “Variation Simulation of Compliant Metal Plate Assemblies Considering Welding Distortion” in Journal of Manufacturing Science and Engineering. Febuary 9, 2015 by ASME.

      [10] Xiaoyun , L, Gary Wang,G, “ Non-linear dimensional variation analysis for sheet metal assemblies by contact modeling”. Finite Elements in Analysis and Design 44 (2007) pp. 34 – 44.


 

View

Download

Article ID: 8470
 
DOI: 10.14419/ijet.v7i1.8470




Copyright © 2012-2015 Science Publishing Corporation Inc. All rights reserved.