Browse > Article
http://dx.doi.org/10.3795/KSME-A.2005.29.10.1377

Development of an Efficient Method to Consider Weld Distortion in Tolerance Analysis  

Yim Hyunjune (홍익대학교 기계시스템디자인공학과)
Lee Dongyul (홍익대학교 대학원 기계공학과)
Lee Jaeyeol ((주)지노스)
Kwon Ki Eak ((주)비투젠)
Shin Jong-Gye (서울대학교 조선해양공학과)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.29, no.10, 2005 , pp. 1377-1383 More about this Journal
Abstract
A general and efficient methodology has been developed to analyze dimensional variations of an assembly, taking into account of weld distortion. Weld distortion is generally probabilistic because of the random nature of welding parameters such as the welding speed, maximum welding temperature, ambient temperature, etc. The methodology is illustrated through a very simple example of two perpendicular plates fillet-welded to each other. Two steps comprise the methodology: establishment of a weld-distortion database, and tolerance analysis using the database. To establish the database, thermo-elasto-plastic finite element analyses are conducted to compute the weld distortion for all combinations of discrete values of major welding parameters. In the second step of tolerance analysis, the weld distortion retrieved from the database is used in addition to the dimensional tolerances of the parts. As a result of such an analysis, sensitivities of the assembly's dimensional variations to the part tolerances and weld distortion are obtained, which can be help improve the dimensional quality of the assembly.
Keywords
Welding Assembly; Tolerance Analysis; Assembly Variation; Weld Distortion;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Hsieh, C.C. and Oh, K.P., 1997, 'A Framework for Modelling Variation in Vehicle Assembly Processes,' Int. J. of Vehicle Design, Vol. 18, No. 5, pp. 466-473
2 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, Vol.119, pp. 368-374   DOI   ScienceOn
3 Dimensional Control System, 2003, 3DCS Analyst User's Manual
4 Chase, K.W. and Parkinson, 1991, 'A Survey of Research in the Application of Tolerance Analysis to the Design of Mechanical Assemblies,' Research in Engineering Design, No. 3, pp. 23-27   DOI
5 Juster, N.P., 1992, 'Modelling and Representation of Dimensions and Tolerances: A Survey,' Computer Aided Design, Vol. 24, No. 1, pp. 3-17   DOI   ScienceOn
6 Hu, S. J. and Wu, S. M., 1992, 'Identifying Sources of Variation in Automobile Body Assembly Using Principal Component Analysis,' Trans. of NAMRI, Vol. 20, pp. 311-316