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Abstract

The SAFE Structural Analysis procedure is an idealisation error control methodology devised for linear static finite element analysis. This study examines the applicability of this process to non-linear problems. The studied case is the collapse analysis of an aircraft stiffened panel loaded in compression. This article presents the critical investigation of important modelling assumptions, including the joint modelling, boundary conditions, geometrical imperfections and scattering in material parameters. Potential error sources are identified and then analysed using the non-linear finite element solver ABAQUS. The analysis derived an improved finite element model and concrete idealisation error estimates. The finally simulated failure behaviour corresponds well to the data measured in the test.

Keywords

Finite element method modelling error control idealisation ABAQUS non-linear

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References

Heitmann

Horst

Fitzsimmons

. Effective stiffness of postbuckled stiffened metallic panels under combined compression and shear stress. J Strain Anal Eng Des 2003; 38(6): 539–555.

Lynch

Murphy

Price

. The computational analysis of fuselage stiffened panels loaded in compression. Thin-Walled Struct 2004; 42(10): 1445–1464.

Murphy

Price

Gibson

. Efficient non-linear idealisations of aircraft fuselage panels in compression. Finite Elem Anal Des 2004; 40(13-14): 1978–1993.

Hughes

Ghosh

Chen

. Improved prediction of simultaneous local and overall buckling of stiffened panels. Thin-Walled Struct 2004; 42(6): 827–856.

Sadovský

Ďuricová

Ivančo

. Imperfection measures of eigen- and periodic modes of axially loaded stringer-stiffened cylindrical shells. Proc IMechE, Part G: J Aerospace Engineering 2009; 224: 601–612.

Paik

Seo

. Nonlinear finite element method models for ultimate strength analysis of steel stiffened-plate structures under combined biaxial compression and lateral pressure actions – part II: stiffened panels. Thin-Walled Struct 2009; 47(8--9): 998–1007.

Morris

. The qualification of safety critical structures by finite element analytical methods. Proc IMechE, Part G: J Aerospace Engineering 1996; 210: 203–208.

Vignjevic

Morris

Belagundu

. Towards high fidelity finite element analysis. Adv Eng Software 1998; 29(7-9): 655–665.

Morris A. A practical guide to reliable finite element modelling. Chichester: John Wiley & Sons, 2008.

10.

Hetey

. Idealisation error control for aerospace virtual structural testing, PhD Thesis, Cranfield University, Cranfield, England, 2009.

11.

Campbell

Hetey

Vignjevic

. Non-linear idealisation error analysis of a metallic stiffened panel loaded in compression. Thin-Walled Struct 2012; 54: 44–53.

12.

Anonymous. ABAQUS/Standard user’s manual, Version 6.10. Rhode Island: Hibbitt, Karlsson and Sorensen, 2010.

13.

Ramberg W and Osgood WR. Description of stress-strain curves by three parameters. NACA techical note 902, 1943.

14.

Bickford JH and Nassar S. Handbook of bolts and bolted joints. New York: Marcel Dekker, 1998.

15.

Avallone EA, Baumeister III Th and Sadegh A. Mark's standard handbook for mechanical engineering. 11th ed. New York: McGraw-Hill Professional, 2006.

16.

ESDU. Metallic material data handbook. DEF STAN 00-932. ESDU International, 2006.

17.

DoD. Military standardization handbook. Metallic materials and elements for aerospace vehicle structures, MIL-HDBK-5J, USA: Department of Defence, 2003.

18.

Haugen EB. Probabilistic mechanical design. New York: John Wiley & Sons, 1980.

19.

Mateus

Witz

. A parametric study of the post-buckling behaviour of steel plates. Eng Struct 2001; 23(2): 172–185.

20.

Pradlwarter

Pellissetti

Schenk

. Realistic and efficient reliability estimation for aerospace structures. Comput Meth Appl Mech Eng 2005; 194(12-16): 1597–1617.

Non-linear idealisation error analysis of an aerospace stiffened panel loaded in compression

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