Enriched finite elements for the efficient prediction of impact-induced damage in composite laminates

2013 ◽  
Vol 79 ◽  
pp. 87-96 ◽  
Author(s):  
I. Guiamatsia ◽  
J.K. Ankersen ◽  
L. Iannucci ◽  
M. Fouinneteau
Keyword(s):  
Finite Elements ◽  
Composite Laminates ◽  
Efficient Prediction ◽  
Enriched Finite Elements

Experimental and numerical investigation of stiffener effects on buckling strength of composite laminates with circular cutout

2019 ◽  
Vol 54 (9) ◽  
pp. 1141-1160 ◽  
Author(s):  
T Shojaee ◽  
B Mohammadi ◽  
R Madoliat
Keyword(s):  
Composite Laminates ◽  
Composite Plates ◽  
Nonlinear Buckling ◽  
Perforated Plates ◽  
Finite Strip ◽  
Strip Method ◽  
Finite Strip Method ◽  
Buckling Behavior ◽  
Efficient Prediction ◽  
Circular Cutout

In the notched structures, to achieve maximum buckling resistance in comparison with structural weight, the optimal design of a stiffener is very important. In this research, after a review of the existing literature, nonlinear buckling behavior of composite plates containing the cutout with three different designs of stringer was investigated. The considered stiffeners are planer, longitudinal, and ring types. The buckling experiments were carried out on the stiffened plates containing a circular notch. Moreover, to achieve an efficient prediction of the buckling in the stiffened laminate with the hole, a finite strip method is developed based on the Airy stress function and von Karman’s large deformation equations. Studies show that there is a good agreement between the postbuckling behaviors derived from developed finite strip method with experimental results. Fast convergence of the considered finite strip method compared with the finite element results shows its efficiency for prediction of buckling behavior in laminated composites. The results show that the buckling load-bearing capacities of perforated plates with a longitudinal and planer stiffener are higher compared with the other stiffener, respectively. The detailed parametric study on the effects of thickness of the plate and stiffener and opening diameter on buckling behavior was performed using experiments and modeling.

scholarly journals Accounting for local capillary effects in two-phase flows with relaxed surface tension formulation in enriched finite elements

2018 ◽  
Vol 346 (8) ◽  
pp. 617-633 ◽  
Author(s):  
Loïc Chevalier ◽  
Julien Bruchon ◽  
Nicolas Moulin ◽  
Pierre-Jacques Liotier ◽  
Sylvain Drapier
Keyword(s):  
Surface Tension ◽  
Finite Elements ◽  
Two Phase Flows ◽  
Two Phase ◽  
Capillary Effects ◽  
Enriched Finite Elements
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