A Parametric studies of welding distortion in fillet welded structure based on FEA using...
Title of Paper:
A Parametric studies of welding distortion in fillet welded structure based on FEA using...
Journal:
Sci. and Tech. of Welding and Joining
Summary:
Abstract
A three-dimensional elastic–plastic finite element model was used to investigate the relative effects of different joint forms on the welding
distortion and residual stresses in an automotive differential assembly due to deep-penetration high-energy welding. Numerical studies were
carried out to determine optimal selections of heat generation rate and the number of weld segments to ensure both computational efficiency and
accuracy of the calculation. To model the constraints and boundary conditions realistically, contact elements were used at the mating surfaces of
different structural components and the shrink fit between the gear and differential case was modeled using couple sets. Two situations representing
welded gear-case assemblies where the weld joints were oriented at 0◦ and 30◦ with respect to the radial direction were analyzed. Predicted welding
distortions and residual stresses are compared and discussed in detail. The results indicate that the residual tensile stresses in the 0◦ radial joint are
larger than those in the 30◦ angled joint and that residual distortion is sensitive to joint form.
Co-author:
Zhang LJ, Zhang JX, Serizawa, Murakawa. H
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