Post-buckling and delamination propagation behavior of composite laminates with embedded delamination

2020 ◽  
Vol 34 (3) ◽  
pp. 1099-1110
Author(s):  
Abebaw Abie Mekonnen ◽  
Kyeongsik Woo ◽  
Minsong Kang ◽  
In-Gul Kim
Keyword(s):  
Composite Laminates ◽  
Propagation Behavior ◽  
Post Buckling ◽  
Delamination Propagation

scholarly journals Numerical Analysis of the Influences of Geometrical Deviation on Delamination in Composite Laminates around the Countersunk Hole

2018 ◽  
Vol 2018 ◽  
pp. 1-11
Author(s):  
Xueshu Liu ◽  
Yuxing Yang ◽  
Li Huang ◽  
Ping Zhang ◽  
Hang Gao
Keyword(s):  
Composite Laminates ◽  
Damage Model ◽  
Geometrical Parameters ◽  
Progressive Damage ◽  
Cohesive Element ◽  
Propagation Behavior ◽  
Transition Area ◽  
Progressive Damage Model ◽  
Hole Machining ◽  
Delamination Propagation

During countersunk hole machining, defects like geometrical deviation of the chamfer angle and delamination are easily introduced into the structure. To investigate the influences of geometrical deviation on delamination propagation around the countersunk hole during assembly, a progressive damage model (PDM) combining cohesive element was proposed and validated. Numerical analyses were then carried out to study delamination propagation behavior under the influences of geometrical parameters including delamination factor, chamfer angle, and location of delamination. The results show that when delamination appears at the transition area of the countersunk hole, the load causing the delamination evolution is much smaller than other cases.

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.

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