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Crippling analysis of composite stringers based on complete unloading method
- Authors
- Kweon, J.-H.
- Issue Date
- Nov-2002
- Publisher
- Pergamon Press Ltd.
- Keywords
- Arc-length method; Composite stringer; Crippling stress; Local buckling
- Citation
- Computers and Structures, v.80, no.27-30, pp 2167 - 2175
- Pages
- 9
- Indexed
- SCIE
SCOPUS
- Journal Title
- Computers and Structures
- Volume
- 80
- Number
- 27-30
- Start Page
- 2167
- End Page
- 2175
- ISSN
- 0045-7949
1879-2243
- Abstract
- This paper addresses a nonlinear finite element method for the crippling analysis of composite laminated stringers. For the finite element modeling, a nine-node laminated shell element based on the first order shear deformation theory is used. Failure-induced stiffness degradation is simulated by the complete unloading method. A modified arc-length algorithm is incorporated in the nonlinear finite element method to trace the post-failure equilibrium path after a local buckling. Finite element results show excellent agreement with those of previous experiment. A parametric study is performed to assess the effect of the flange-width, web-height, and stacking sequence on the buckling, local buckling, and crippling stresses of stringers. © 2002 Civil-Comp Ltd. and Elsevier Science Ltd. All rights reserved.
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