Effect of Strain Hardening on Monotonic and Cyclic Loading Behavior of Plate-Fin Structures with Two Pore Pressures


Article Preview

We perform finite element homogenization (FEH) analysis to investigate the effect of strain hardening on the monotonic and cyclic loading behavior of plate-fin structures with two pore pressures. As a typical base metal of plate-fin structures, 316 stainless steel is considered and assumed to be the viscoplastic material that obeys the Ohno-Wang kinematic hardening rule. The plate-fin structures are assumed to be periodic and subjected to uniaxial monotonic and cyclic loadings in the stacking direction. A periodic unit cell is used for FEH analysis. Results are compared with those based on three special cases derived from Hill’s macrohomogeneity equation. It is found that the mean pore pressure entirely affect the homogenized viscoplastic behavior. It is further found that the differential pore pressure causes the remarkable accumulation of ratcheting strain in the periodic unit cell, although this internal ratcheting gives no effect on macroscopic relations, resulting in providing a closed hysteresis loop for the plate-fin structures.



Edited by:

Yeong-Maw Hwang and Cho-Pei Jiang




S. Banno et al., "Effect of Strain Hardening on Monotonic and Cyclic Loading Behavior of Plate-Fin Structures with Two Pore Pressures", Key Engineering Materials, Vol. 626, pp. 133-138, 2015

Online since:

August 2014




* - Corresponding Author

[1] F. Kawashima, T. Igari, Y. Miyoshi, Y. Kamito, M. Tanihira, High temperature strength and inelastic behavior of plate-fin structures for HTGR, Nucl. Eng. Des. 237 (2007) 591-599.

DOI: https://doi.org/10.1016/j.nucengdes.2006.09.007

[2] W.C. Jiang, J.M. Gong, S.T. Tu, H. Chen, Effect of geometric conditions on residual stress of brazed stainless steel plate-fin structure, Nucl. Eng. Des. 238 (2008) 1497-1502.

DOI: https://doi.org/10.1016/j.nucengdes.2007.11.010

[3] Y. Mizokami, T. Igari, F. Kawashima, N. Sakakibara, M. Tanihira, T. Yuhara, T. Hiroe, Development of structural design procedure of plate-fin heat exchanger for HTGR, Nucl. Eng. Des. 255 (2013) 248-262.

DOI: https://doi.org/10.1016/j.nucengdes.2012.09.013

[4] N. Ohno, K. Ikenoya, D. Okumura, T. Matsuda, Homogenized elastic-viscoplastic behavior of anisotropic open-porous bodies with pore pressure, Int. J. Solids Struct. 49 (2012) 2799-2806.

DOI: https://doi.org/10.1016/j.ijsolstr.2012.02.014

[5] N. Ohno, K. Narita, D. Okumura, Homogenized elastic-viscoplastic behavior of plate-fin structures with two pore pressures, Int. J. Mech. Sci. (in press).

DOI: https://doi.org/10.1016/j.ijmecsci.2013.10.015

[6] N. Ohno, J.D. Wang, Kinematic hardening rules with critical state of dynamic recovery. 1. formation and basic features for ratcheting behavior. Int. J. Plast. 9 (1993) 375-390.

DOI: https://doi.org/10.1016/0749-6419(93)90042-o

[7] N. Ohno, D. Okumura, H. Noguchi, Microscopic symmetric bifurcation condition of cellular solids based on a homogenization theory of finite deformation, J. Mech. Phys. Solids 50 (2002) 1125-1153.

DOI: https://doi.org/10.1016/s0022-5096(01)00106-5

[8] Y. Takahashi, D. Okumura, N. Ohno, Yield and buckling behavior of Kelvin open-cell foams subjected to uniaxial compression, Int. J. Mech. Sci. 52 (2010) 377-385.

DOI: https://doi.org/10.1016/j.ijmecsci.2009.10.009