Journal of Applied Sciences1812-56541812-5662Asian Network for Scientific Information10.3923/jas.2008.3129.3138ZehsazM.ZakaviS.J.MahbadiH.EslamiM.R.122008818A series of 6 tests have been conducted using cylindrical
specimens having mean diameter/thickness ratios in the range 8≤D_{m}/t≤28.
Each cylinder is pressurized up to its calculated design pressure and
is loaded with an alternative bending moment at frequencies typical of
seismic events simultaneously. Ratchetting of the cylinder wall has been
observed and recorded in the hoop direction. A finite element analysis
with the nonlinear isotropic/kinematic (combined) hardening model has
been used to evaluate ratchetting behavior of the cylinder under mentioned
loading condition. The finite element results are compared with those
obtained from experimental set-up. The results show that initial the rate
of ratchetting is large and then it decreases with the increasing of cycles.
The results also show that the FE method and analytical solutions give
over estimated values comparing with the experimental data.]]>Abdel-Karim, M. and N. Ohno, 2000Abdel-Karim, M.,2005Armstrong, P.J. and C.O. Frederick,1966Bari, S. and T. Hassan, 2000Bari, S. and T. Hassan, 2001Bari, S. and T. Hassan, 2002Beaney, E.M.,1990Beaney, E.M.,1991Chaboche, J.L.,1991Chaboche, J.L.,1994Chen, X.and R. Jiao, 2004Chen, X., R. Jiao and S.K. Kwang, 2005English, W.F., 1988Eslami, M.R. and H. Mahbadi, 2001Johansson, G., M. Ekh and K. Runesson, 2005Lubliner, J., 1990Mahbadi, H. and M.R. Eslami,2006Mendelson, A.,1960Moreton, D.N., K. Yahiaoui, D.G. Moffat, H.C. Machin and L.A. Amesbury, 1994Moreton, D.N., K. Yahiaoui, D.G. Moffat and M. Zehsaz, 1996Moreton, D.N., M. Zehsaz, K. Yahiaoui and D.G. Moffat,1998Prager, W., 1956Ranganath, S., H. Hwang and S.W. Tagart,1989Yahiaoui, K., D.G. Moffat and D.N. Moreton, 1992Moreton, D.N., M. Zehsaz, K. Yahiaoui and D.G. Moffat, 1988