A control method of guide rolls in 3D-FE simulation of ring rolling

Recent development of ring rolling theory and technique

“…Some key modelling methods have been solved to obviously improve the precision and efficiency of numerical simulation, including elastic-plastic dynamic explicit algorithm (Utsunomiya et al, 2002;Sawamiphakdi et al, 2002;Luo et al, 2004;Zhang et al, 2007), mass scaling strategy (Qian et al, 2005), reconstruction and distortion control of grid (Davey and Ward, 2002a), adaptive control of guide rolls (Li et al, 2008;Zhang et al, 2012a), thermal-mechanical coupling skill (Song et al, 2002). In addition, some scholar have tried to use FE modelling methods to predict microstructure evolution of ring rolling, mainly utilising a FE software integrated a module to simulate microstructure evolution or developing a function in a FE software by compiling a subroutine, based on mathematical models of microstructure evolution Zhu et al, 2012;Henke et al, 2013;.…”

Modeling and application of ring stiffness condition for radial-axial ring rolling

“…15. (27) where FXg-max is the maximum allowed guiding force based on X-model, the coefficient (28) where FHg-max is the maximum allowed guiding force based on H-model, the coefficient…”

“…Hua et al [27] adopted a theoretical method to predict the motion rule of guide roll by calculating the ring size during cold radial ring rolling process of a groove ball ring. Li et al [28] proposed a method to control the guide rolls by adjusting the pressure of hydraulic mechanism in 3D-FE radial ring rolling simulation. Xu et al [29] put forward a plastic instability criterion for radial ring rolling and calculated the bending moment of ring under the action of guide rolls by the force method.…”

Numerical Modelling and Simulation of Radial-Axial Ring Rolling Process

“…For example, Yang et al (2008) investigated the effects of blank size on strain and temperature distribution during hot rolling of titanium alloy large rings by 3D coupled thermo-mechanical FE simulations; Guo et al (2005) revealed the plastic deformation behavior in cold ring rolling by FE simulation and proposed three kinds of plastic deformation behaviors of pure radial ring rolling process. Guo & Yang (2011) developed mathematical model of a steady forming condition for radial-axial ring rolling and demonstrated its validation by FE simulations; Li et al (2008) reported a control method of guide rolls in 3D-FE simulation of ring rolling; Wang et al (2009) revealed the coupled mechanical and thermal behaviours in hot rolling of large rings of titanium alloy using 3D dynamic explicit FEM, and so on. The relevant studies on the above metal forming technologies have attained supports of many national major research programs such as the Natural Science Foundation of China, National Basic Research Program of China ("973" Program), National Major Science and Technology Special Projects of China and National High Technology Research and Development Program of China (" 863" Program).…”

“…Any force imbalance and instability during the rolling process can be removed by the actions of the guide rolls if well-controlled. In the FE model shown in Fig.4, the guide rolls can be controlled adaptively by an adjustment mechanism which is modeled using the surface-based fluid cavities and connector element technologies in ABAQUS based on the method proposed by Li et al (2008).…”