Delamination R-curve behavior of curved composite laminates

被引：33

作者：

Ghadirdokht, A. ^{[1
]}

Heidari-Rarani, M. ^{[1
]}

机构：

[1] Univ Isfahan, Fac Engn, Dept Mech Engn, Esfahan 8174673441, Iran

来源：

COMPOSITES PART B-ENGINEERING | 2019年 / 175卷

关键词：

Delamination; Double cantilever beam; Curvature; Cohesive zone model; Virtual crack closure technique; MODE-I DELAMINATION; DCB SPECIMENS; GROWTH; BEAMS; PROPAGATION; SIMULATION; FAILURE; VCCT; LAW;

D O I：

10.1016/j.compositesb.2019.107139

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of curvature on the delamination R-curve behavior of composite unidirectional laminates is investigated in both the experimental and numerical manners. The flat and curved double cantilever beam specimens with different radii of curvatures are manufactured and tested subjected to mode I loading. A new data reduction method is developed for the curved specimens by adopting the Timoshenko curved beam theory. Experimental R-curves indicate that curvature has no effect on the initiation toughness, while it significantly affects the steady-state toughness and fiber bridging length. Variation of the steady-state toughness and fiber bridging length vs. The different curvatures is formulated for the curved specimens with R/h > 25 (R/h: the ratio of the radius of curvature to thickness). Finally, delamination propagation is simulated in the curved double cantilever beam specimens in commercial finite element software, ABAQUS, by applying both the virtual crack closure technique and cohesive zone model.

引用

页数：9

共 35 条

[1] On the influence of the shape of the interface law on the application of cohesive-zone models [J].

Alfano, G .

COMPOSITES SCIENCE AND TECHNOLOGY, 2006, 66 (06) :723-730

[2]

[Anonymous], 2014, D7905 ASTM

[3]

[Anonymous], 2013, D5528 ASTM

[4]

Daricik F., 2017, EUR MECH SCI, V1, P117

[5]

Davies P., 1994, APPL COMPOS MATER, V1, P333, DOI DOI 10.1007/BF00568040

[6] Delamination in cross-ply laminates: Identification of traction-separation relations and cohesive zone modeling [J].

Farmand-Ashtiani, E. ;

Alanis, D. ;

Cugnoni, J. ;

Botsis, J. .

COMPOSITES SCIENCE AND TECHNOLOGY, 2015, 119 :85-92

[7] Competing mechanisms in the unfolding failure in composite laminates [J].

Gonzalez-Cantero, J. M. ;

Graciani, E. ;

Lopez-Romano, B. ;

Paris, F. .

COMPOSITES SCIENCE AND TECHNOLOGY, 2018, 156 :223-230

[8] An experimental and numerical assessment of DCB tests on glass/polyester curved beams cut out from pipes [J].

Guedes, Rui Miranda ;

Sa, Alcides ;

de Moura, M. F. S. F. .

POLYMER TESTING, 2008, 27 (08) :985-994

[9] Modelling the R-curve effect and its specimen-dependence [J].

Gutkin, R. ;

Laffan, M. L. ;

Pinho, S. T. ;

Robinson, P. ;

Curtis, P. T. .

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES, 2011, 48 (11-12) :1767-1777

[10] Appropriate shape of cohesive zone model for delamination propagation in ENF specimens with R-curve effects [J].

Heidari-Rarani, M. ;

Ghasemi, A. R. .

THEORETICAL AND APPLIED FRACTURE MECHANICS, 2017, 90 :174-181

← 1 2 3 4 →