3D-FE simulation of inhomogeneous stress and strain distributions in cold profiled ring rolling process under different hardening coefficients. (1st January 2012)

• Record Type: Journal Article
• Authors: Li, Lanyun; Li, Xiao; He, Zhi
• Is Part Of: International journal of material & product technology. Volume 44:Number 1/2(2012)
• Page Start: 47
• Page End: 66
• Publication Date: 2012-01-01
• Subjects: cold profiled ring rolling -- inhomogeneous stress and strain distribution -- hardening coefficient -- 3D-FE simulation; Manufacturing processes -- Periodicals; Materials -- Testing -- Periodicals; 620.11
• Languages: English
• ISSNs: 0268-1900

Abstract

Cold profiled ring rolling is an advanced continuous local metal forming technology widely used for manufacturing various seamless complex-section rings. Investigating the stress and strain distributions (SSD) is very significant for rapidly predicting the defects and improving the quality of deformed rings. The non-uniform SSD in T-shaped cold ring rolling with different hardening exponents are investigated based on 3D-FE simulation. The results show: 1 despite the difference in hardening exponent, the compressive effect of stress is larger near the outer-surface and decreases toward the core; it increases from the core to contact inner-surface but decreases from the core to the non-contact inner surface 2 the deformation around the groove fillet is larger and more non-uniform 3 the surface layer of the filling part near the fillet deforms a little smaller but still non-uniformly, the tensile principal stress components increases and the hydrostatic stress is positive, resulting in poor plasticity.