A Finite Element Investigation into the Effect of a Skew Insert in a Double-Cantilever Beam Specimen on Calculating Mode I Delamination Fracture Energy of Unidirectional Composites

2001 ◽  
Vol 29 (2) ◽  
pp. 199
Author(s):  
DR Petersen ◽  
RE Link ◽  
F Javidrad ◽  
MM Mashadi
Keyword(s):  
Finite Element ◽  
Fracture Energy ◽  
Cantilever Beam ◽  
Double Cantilever Beam ◽  
Mode I ◽  
Beam Specimen ◽  
Double Cantilever Beam Specimen ◽  
Unidirectional Composites ◽  
Delamination Fracture ◽  
Mode I Delamination

scholarly journals Experimental Study On Fracture Property Of Double Cantilever Beam Specimen With Aluminum Foam

2015 ◽  
Vol 60 (2) ◽  
pp. 1151-1154
Author(s):  
Y.C. Kim ◽  
H.K. Choi ◽  
J.U. Cho
Keyword(s):  
Fracture Energy ◽  
Cantilever Beam ◽  
Adhesive Joint ◽  
Aluminum Foam ◽  
Fracture Property ◽  
Double Cantilever Beam ◽  
Beam Specimen ◽  
Double Cantilever Beam Specimen ◽  
Opening Mode ◽  
Static Experiment

Abstract This study aims to investigate double cantilever beam specimen with aluminum foam bonded by spray adhesive to investigate the fracture strength of the adhesive joint experimentally. The fracture energy at opening mode is calculated by the formulae of British Engineering Standard (BS 7991) and International Standard (ISO 11343). For the static experiment, four types of specimens with the heights (h) of 25 mm, 30 mm, 35 mm and 40 mm are manufactured and the experimental results are compared with each other. As the height becomes greater, the fracture energy becomes higher. After the length of crack reaches 150 mm, the fracture energy of the specimen (h=35 mm) is greater than that of the specimen (h=40 mm). Fatigue test is also performed with DCB test specimen. As the height decreases, the fracture energy becomes higher. By the result obtained from this study, aluminum foam with adhesive joint can be applied to actual composite structure and its fracture property can possibly be anticipated.

Displacement-controlled crack growth in double cantilever beam specimen: A comparative study of different models

2016 ◽  
Vol 231 (15) ◽  
pp. 2835-2847 ◽  
Author(s):  
Ali Abbaszadeh Bidokhti ◽  
Amir Reza Shahani ◽  
Mohammad Reza Amini Fasakhodi
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Closed Form ◽  
Crack Growth ◽  
Elastic Foundation ◽  
Cantilever Beam ◽  
Double Cantilever Beam ◽  
Beam Specimen ◽  
Extended Finite Element ◽  
Double Cantilever Beam Specimen

This paper presents, discusses, and compares different techniques to model fracture initiation and static crack growth in double cantilever beam specimen under displacement-controlled loading. Energy release rate, critical displacement for the onset of crack growth, and critical load were determined by analytical solution, standard, and extended finite element method. The crack growth was also examined, and the advantages of each method were described as well. In addition, the compliance technique was used in the analytical method. In this regard, the crack growth relations were formulated based on four models including simple Euler–Bernoulli model, Euler–Bernoulli on the elastic foundation, simple Timoshenko beam, and the beam on the elastic foundation considering shear effects. Closed-form relations were extracted for the fracture parameters. Afterward, the Abaqus software was utilized to simulate the crack growth by the standard finite element method. Since the extended finite element has the ability to model the discontinuities inside the elements, the problem was also simulated by this method. Cohesive fracture of double cantilever beam specimen was performed using a closed-form solution and using a finite element model. Results of different modeling techniques were determined and compared.

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