A general and efficient methodology has been developed to analyze dimensional variations of a welded 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 by 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-elastoplastic 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 taken into account 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 could provide a guideline for improving dimensional quality of the assembly.
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August 2009
Research Papers
Tolerance Analysis Considering Weld Distortion by Use of Pregenerated Database
Dongyul Lee,
Dongyul Lee
Ssangyong Motors Company
, Pyongtaek, Kyunggi, 459–711, Korea
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Ki Eak Kwon,
Ki Eak Kwon
B2GEN Inc.
, Seoul, 153-803, Korea
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Jaeyeol Lee,
Jaeyeol Lee
Xinnos Inc.
, Seoul, 137–839, Korea
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Haeseong Jee,
Haeseong Jee
Hongik University
, Seoul, 121–791, Korea
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Seong Wook Cho,
Seong Wook Cho
Chung Ang University
, Seoul, 156–756, Korea
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Jong-Gye Shin,
Jong-Gye Shin
Seoul National University
, Seoul, 151–744, Korea
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Gyubong Lee
Gyubong Lee
KITECH
, Cheonan, Kyunggi, 331–825, Korea
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Dongyul Lee
Ssangyong Motors Company
, Pyongtaek, Kyunggi, 459–711, Korea
Ki Eak Kwon
B2GEN Inc.
, Seoul, 153-803, Korea
Jaeyeol Lee
Xinnos Inc.
, Seoul, 137–839, Korea
Haeseong Jee
Hongik University
, Seoul, 121–791, Korea
Hyunjune Yim
Seong Wook Cho
Chung Ang University
, Seoul, 156–756, Korea
Jong-Gye Shin
Seoul National University
, Seoul, 151–744, Korea
Gyubong Lee
KITECH
, Cheonan, Kyunggi, 331–825, KoreaJ. Manuf. Sci. Eng. Aug 2009, 131(4): 041012 (8 pages)
Published Online: July 14, 2009
Article history
Received:
March 8, 2006
Revised:
December 3, 2007
Published:
July 14, 2009
Citation
Lee, D., Kwon, K. E., Lee, J., Jee, H., Yim, H., Cho, S. W., Shin, J., and Lee, G. (July 14, 2009). "Tolerance Analysis Considering Weld Distortion by Use of Pregenerated Database." ASME. J. Manuf. Sci. Eng. August 2009; 131(4): 041012. https://doi.org/10.1115/1.3160319
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