Numerical Investigation of Post Buckling Strength and Failure Modes in Advanced Grid Stiffened Structure under Thermal-Mechanical Loads

2007 ◽  
pp. 613-616
Author(s):  
Rui Xiang Bai ◽  
Bo Chen ◽  
Cheng Yan ◽  
Lin Ye ◽  
Ze Cheng Li ◽  
...  
Keyword(s):  
Numerical Investigation ◽  
Failure Modes ◽  
Mechanical Loads ◽  
Buckling Strength ◽  
Post Buckling

Numerical Investigation of Post Buckling Strength and Failure Modes in Advanced Grid Stiffened Structure under Thermal-Mechanical Loads

2007 ◽  
Vol 334-335 ◽  
pp. 613-616
Author(s):  
Rui Xiang Bai ◽  
Bo Chen ◽  
Cheng Yan ◽  
Lin Ye ◽  
Ze Cheng Li ◽  
...  
Keyword(s):  
Failure Modes ◽  
Mechanical Load ◽  
Progressive Failure ◽  
Shear Deformation Theory ◽  
Failure Behavior ◽  
Linear Deformation ◽  
Failure Characteristics ◽  
Buckling Strength ◽  
Stiffened Structures ◽  
Post Buckling

This work investigated the post buckling strength and failure behavior of advanced grid stiffened structures (AGS) under thermal-mechanical load using a finite element method. Based on the first order shear deformation theory (FSDT), Von Karman non-linear deformation assumption, and a progressive failure criterion, the buckling, large deformation，local failure modes in the AGS were studied. The thermal effect was also analyzed. By some numerical examples, the failure characteristics of the AGS were discussed.

Research on the post-buckling strength of screw composite thin plate with large deflection

Structures ◽  
2021 ◽  
Vol 32 ◽  
pp. 204-215
Author(s):  
Lei Zhang ◽  
Tianhua Zhou ◽  
Yanchun Li ◽  
Liurui Sang
Keyword(s):  
Thin Plate ◽  
Large Deflection ◽  
Buckling Strength ◽  
Post Buckling

Buckling and Postbuckling Analyses of a Skew Plate

2008 ◽  
Vol 24 (4) ◽  
pp. 347-355 ◽  
Author(s):  
H. W. Liao ◽  
H. Y. Huang
Keyword(s):  
Composite Laminates ◽  
High Order ◽  
Design Parameters ◽  
Aerospace Structures ◽  
Critical Buckling Load ◽  
Buckling Strength ◽  
Skew Plate ◽  
Post Buckling ◽  
Polynomial Expansions ◽  
Important Design

AbstractThe applications of skew plates in the construction of aerospace structures are well known. The critical buckling load and post-buckling strength are two important design parameters of skew composite laminates. In this study, the refined buckling and nonlinear postbuckling solutions of a homogenous isotropic skew plate based on polynomial expansions of various degrees have been examined. Numerical results based on high-order Rayleigh-Ritz solutions are presented for certain type of oblique plates.

Numerical investigation on strength and failure modes of thread-fixed one-side bolted T-stubs under tension

2018 ◽  
Vol 169 ◽  
pp. 15-36 ◽  
Author(s):  
Tuoya Wulan ◽  
Peijun Wang ◽  
Yang Li ◽  
Yang You ◽  
Funing Tang
Keyword(s):  
Numerical Investigation ◽  
Failure Modes

Post-Buckling Failure Modes of X65 Steel Pipe: An Experimental and Numerical Study

2018 ◽  
Vol 140 (5) ◽  
Author(s):  
Nima Mohajer Rahbari ◽  
Mengying Xia ◽  
Xiaoben Liu ◽  
J. J. Roger Cheng ◽  
Millan Sen ◽  
...  
Keyword(s):  
Internal Pressure ◽  
Cross Section ◽  
Failure Modes ◽  
Bending Test ◽  
Bending Load ◽  
Post Buckling ◽  
X65 Steel ◽  
Bending Loads ◽  
Buckling Failure ◽  
Longitudinal Strains

In service pipelines exhibit bending loads in a variety of in-field situation. These bending loads can induce large longitudinal strains, which may trigger local buckling on the pipe's compressive side and/or lead to rupture of the pipe's tensile side. In this article, the post-buckling failure modes of pressurized X65 steel pipelines under monotonic bending loading conditions are studied via both experimental and numerical investigations. Through the performed full-scale bending test, it is shown that the post-buckling rupture is only plausible to occur in the pipe wall on the tensile side of the wrinkled cross section under the increased bending. Based on the experimental results, a finite element (FE)-based numerical model with a calibrated cumulative fracture criterion was proposed to conduct a parametric analysis on the effects of the internal pressure on the pipe's failure modes. The results show that the internal pressure is the most crucial variable that controls the ultimate failure mode of a wrinkled pipeline under monotonic bending load. And the post-buckling rupture of the tensile wall can only be reached in highly pressurized pipes (hoop stress no less than 70% SMYS for the investigated X65 pipe). That is, no postwrinkling rupture is likely to happen below a certain critical internal pressure even after an abrupt distortion of the wrinkled wall on the compressive side of the cross section.

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