Experimental-numerical study into the stability and failure of compressed thin-walled composite profiles using progressive failure analysis and cohesive zone model

2021 ◽  
Vol 257 ◽  
pp. 113303
Author(s):  
P. Rozylo
Materials ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1506
Author(s):  
Patryk Rozylo ◽  
Katarzyna Falkowicz ◽  
Pawel Wysmulski ◽  
Hubert Debski ◽  
Jakub Pasnik ◽  
...  

The paper analyzes the stability and failure phenomenon of compressed thin-walled composite columns. Thin-walled columns (top-hat and channel section columns) were made of carbon fiber reinforced polymer (CFRP) composite material (using the autoclave technique). An experimental study on actual structures and numerical calculations on computational models using the finite element method was performed. During the experimental study, post-critical equilibrium paths were registered with acoustic emission signals, in order to register the damage phenomenon. Simultaneously to the experimental tests, numerical simulations were performed using progressive failure analysis (PFA) and cohesive zone model (CZM). A measurable effect of the conducted experimental-numerical research was the analysis of the failure phenomenon, both for the top-hat and channel section columns (including delamination phenomenon). The main objective of this study was to be able to evaluate the delamination phenomenon, with further analysis of this phenomenon. The results of the numerical tests showed a compatibility with experimental tests.


2007 ◽  
Author(s):  
Chian-Fong Yen ◽  
Thomas Cassin ◽  
Joel Patterson ◽  
Matt Triplett

2013 ◽  
Vol 95 ◽  
pp. 53-62 ◽  
Author(s):  
Diego Cárdenas ◽  
Hugo Elizalde ◽  
Piergiovanni Marzocca ◽  
Frank Abdi ◽  
Levon Minnetyan ◽  
...  

2006 ◽  
Vol 324-325 ◽  
pp. 847-850 ◽  
Author(s):  
Cedric Lequesne ◽  
A. Plumier ◽  
H. Degee ◽  
Anne Marie Habraken

The fatigue behaviour of the welded beam-to-column connections of steel moment resisting frame in seismic area must be evaluated. The cohesive zone model is an efficient solution to study such connections by finite elements. It respects the energetic conservation and avoids numerical issues. A three-dimensional cohesive zone model element has been implemented in the home made finite element code Lagamine [1]. It is coupled with the fatigue continuum damage model of Lemaître and Chaboche [2]. The cohesive parameters are identified by the inverse method applied on a three points bending test modelling.


2019 ◽  
Vol 28 (2) ◽  
pp. 956-966
Author(s):  
Zhigang Sun ◽  
Jianfen Sun ◽  
Yaning Chang ◽  
Weiyi Sun ◽  
Lu Qi ◽  
...  

2009 ◽  
Vol 417-418 ◽  
pp. 353-356 ◽  
Author(s):  
M. Rajendran ◽  
Ingo Schneider ◽  
Anuradha Banerjee

A new stress-state dependent cohesive zone model for thin walled structures is proposed. The model incorporates the stress-state explicitly within the traction-separation law using basic elasticity-plasticity equations combined with a model parameter. The numerical implementation of the model is able to reproduce ductile fracture observed in a pre-cracked C(T) specimen as well as a notched plate specimen of the same material.


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