Hourglass Control Methods in Numerical Simulation Code RingForm

Article Preview

Abstract:

Hourglass is obviously aroused in cold ring rolling simulation with reduced integration element because of ring vibrating violently and small contact area of ring and rollers. In the developed numerical simulation code named RingForm, two methods are used to control the hourglass. The first method is combination of artificial damping and artificial stiffness. The second is one-point quadrature element with hourglass control, which need not user-defined control parameters. Hourglass energy can be reduced to 3 percent of the internal energy. Using the latter, good elements are acquired, while computational efficiency is obviously lower than the former.

You might also be interested in these eBooks

Info:

Periodical:

Advanced Materials Research (Volumes 378-379)

Pages:

35-38

Citation:

Online since:

October 2011

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2012 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] K. Davey, M.J. Ward. An ALE approach for finite element ring-rolling simulation of profiled rings. J. Mater. Proc. Tech. 139(2003) 559–566.

DOI: 10.1016/s0924-0136(03)00537-5

Google Scholar

[2] H. Yang, L.G. Guo, M. Zhan, et al. Research on the influence of material properties on cold ring rolling processes by 3D-FE numerical simulation. J. Mater. Proc. Tech. 177(2006): 634-638.

DOI: 10.1016/j.jmatprotec.2006.03.209

Google Scholar

[3] L. Hua, L.B. Pan, J. Lan, et al. Simulation research on radial-axial large ring rolling technology. Chin. J. Mech. Eng. 17(2006): 2020-(2023).

Google Scholar

[4] Flanagan DP, Belytschko T. A uniform strain hexahedron and quadrilateral with orthogonal hourglass control, International Journal for Numerical Methods in Engineering 1981; 17: 679-706.

DOI: 10.1002/nme.1620170504

Google Scholar

[5] Hu YK, Nagy LI. An one-point quadrature eight-node brick element with hourglass control. Compufers & Strucrures 1997; 65: 893-902.

DOI: 10.1016/s0045-7949(96)00088-0

Google Scholar