Numerical and Experimental Study on Ratcheting Behavior of Steel Cylindrical Shells with/without Cutout Under Cyclic Combined and Axial Loading

Subject Areas : Engineering

M Shariati ¹ , K Kolasangiani ² , H.R Epakchi ³ , H Chavoshan ⁴

1 - Department of Mechanical University, Ferdowsi University of Mashhad
2 - Department of Mechanical University, Shahrood University of Technology
3 - Department of Mechanical University, Shahrood University of Technology
4 - Department of Mechanical University, Shahrood University of Technology

Received: 2013-04-30 Accepted : 2013-06-20 Published : 2013-09-30

Keywords: Cylindrical shell, Numerical and experimental study, Cyclic combined and axial loading, Cutout,

Abstract :

Ratcheting behavior of steel 304L cylindrical shell under cyclic combined and axial loading are investigated in this paper, numerically. Cylindrical shells were fixed oblique at angle of 20° and normal with respect to the longitudinal direction of the shell and subjected to force-controlled cycling with non-zero mean force, which causes the accumulation of plastic deformation or ratcheting behavior. Numerical analysis was carried out by ABAQUS software using nonlinear isotropic/kinematic hardening model. Numerical results compared to experimental data that was performed by an INSTRON 8802 servo hydraulic machine. Simulations show good agreement between numerical and experimental results. Also, the effect of length, angle of cylindrical shell and existence of cutout are studied with finite element method. Seen, the bending moment plays a strong role in increase of plastic deformation. It is observed that there is more plastic deformation for cylindrical shell under combined loading in comparison to cylindrical shell under uniaxial loading. Ratcheting behavior is sensitive to cutout and showed that creating the cutout increases the plastic deformation.

References:

[1] Ozgen U.C., 2008, Kinematic hardening rules for modeling uniaxial and multiaxial ratcheting, Material & Design 29: 1575-1581.

[2] Isobe N., Sukekawa M., Nakayama Y., Date S., Ohtani T., Takahashi Y., Kasahara N., Shibamoto H., Nagashima H., Inoue K., 2008, Clarification of strain limits considering the ratcheting fatigue strength of 316FR steel, Nuclear Engineering and Design 238: 347-352.

[3] Sih G.C., 1991, Mechanics of Fracture Initiation and Propagation, Kluwer Academic Publisher, Boston.

[4] Chang K.H., Pan W.F., Lee K.L., 2008, Mean moment effect of thin-walled tubes under cyclic bending, Structural Engineering and Mechanics 28(5): 495-514.

[5] Rahman S.M., Hassan T., Corona E., 2008, Evaluation of cyclic plasticity models in ratcheting simulation of straight pipes under cyclic bending and steady internal pressure, International Journal of Plasticity 24: 1756-1791.

[6] Chang K.H., Pan W.F., 2009, Buckling life estimation of circular tubes under cyclic bending, International Journal of Solids and Structures 46: 254-270.

[7] Zakavi S.J., Zehsaz M., Eslami M.R., 2010, The ratcheting behavior of pressurized plain pipework subjected to cyclic bending moment with the combined hardening model, Nuclear Engineering and Design 240: 726-737.

[8] Kang G., Liu Y., Dong Y., Gao Q., 2011, Uniaxial ratcheting behaviors of metals with different crystal structures or values of fault energy: macroscopic experiments, Journal of Material Science and Technology 27(5): 453-459.

[9] Kang G.Z., Gao Q., Yang X.J., 2004, Uniaxial and non-proportionally multiaxial ratcheting of SS304 stainless steel at room temperature: experiments and simulations, International Journal of Non-linear Mechanics 39: 843–857.

[10] Mizuno M., Mima Y., Abdel-Karim M., Ohno N., 2000, Uniaxial ratcheting of 316FR steel at room temperature, Journal of Engineering Materials and Technology 122(1): 29–34.

[11] Shariati M., Hatami H., 2012, Experimental study of SS304L cylindrical shell with/ without cutout under cyclic axial loading, Theoretical and Applied Fracture Mechanics 58: 35-43.

[12] Shariati M., Hatami H., Yarahmadi H., Eipakchi H.R., 2012, An experimental study on the ratcheting and fatigue behavior of polyacetal under uniaxial cyclic loading, Materials and Design 34: 302–312.

[13] Jiao R., Kyriakides S., 2009, Ratcheting , wrinkling and collapse of tubes under axial cycling, International Journal of Solids and Structures 46: 2856-2870.

[14] Sun G.Q., Shang D.G, 2010, Prediction of fatigue lifetime under multiaxial cyclic loading using finite element analysis, Materials and Design 31(1): 126-133.

[15] Dong J., Wang S., Lu X., 2006, Simulations of the hysteretic behavior of thin-wall cold-formed steel members under cyclic uniaxial loading, Structural Engineering and Mechanics 24(3): 323-337.

[16] Shariati M., Hatami H., Torabi H., Epakchi H.R., 2012, Experimental and numerical investigations on the ratcheting characteristics of cylindrical shell under cyclic axial loading, Structural Engineering and Mechanics 44(6): 753-762.

[17] ABAQUS 6.10.1 PR11 user’s manual.

[18] ASTM A370-05, Standard test methods and definitions for mechanical testing of steel products.

[19] Li Z., Yu J., Guo L., 2012, Deformation and energy absorption of aluminum foam-filled tubes subjected to oblique loading, International Journal of Mechanical Science 54: 48-56.