Applicability of the crack tip element analysis for damage prediction of composite T-joints

Dharmawan, F.; Li, H.C.H.; Herszberg, Israel; John, Sabu

doi:10.1016/j.compstruct.2008.03.030

Cited by 25 publications

(7 citation statements)

References 7 publications

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“…Near the free edges G I , G II values are significantly less compared to those in center of interfacial failure front. This behavior is in qualitative agreement with Dharmawan et al [40]. Away from the boundary region mode III SERR (G III ) values are significantly lower.…”

Section: Interfacial Failure Propagation In Tee Joint With Mono-modulsupporting

confidence: 92%

Interfacial failure analysis of functionally graded adhesively bonded double supported tee joint of laminated FRP composite plates

Nimje

Panigrahi

2015

International Journal of Adhesion and Adhesives

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Section: Interfacial Failure Propagation In Tee Joint With Mono-modulsupporting

confidence: 92%

Interfacial failure analysis of functionally graded adhesively bonded double supported tee joint of laminated FRP composite plates

Nimje

Panigrahi

2015

International Journal of Adhesion and Adhesives

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“…The results of the finite element analysis revealed that particular defects led to large changes in the strains in the T-joint structure, which would enhance disbond progression. Dharmawan et al (2008) employed the crack tip element method for damage prediction of the T-joint. This method was found to be an excellent damage prediction tool for composite laminates where an oscillatory singularity exists at the crack tip.…”

Section: Transverse Stitched T-jointsmentioning

confidence: 99%

Analysis of crack formation in T-joint structures under dynamic loading

Pilipchuk

Ibrahim

2010

Journal of Vibration and Control

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T-joints play a vital role in the hulls of ships and bulkheads made of sandwich materials. Their design aspects and crack detection are important in preserving the safety of ships navigating through violent sea waves. In this work, an overview of the state-of-the-art of design aspects of T-joints used mainly in ship structures is first provided. The design aspects are focused on estimating static and quasi-static failure loads, fracture and fatigue characteristics. This study also develops a reduced order dynamic model for identification of cracks in T-joints. The reduced model constitutes three modal equations with piecewise-linear asymmetric characteristics in which the influence of the crack appears in terms of its length parameter. In particular, it is shown that the presence of a crack essentially affects both the amplitude and frequency content of the dynamic response due to nonlinear coupling between normal modes. Under external dynamic loading with a frequency close to the first mode frequency, the development of a crack is identified by the evolution of attractors on the configuration planes created by different combinations of modal coordinates.

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“…However, up to now, only a few research on the mechanics behavior prediction for composite p joint could be found in the literatures. [8][9][10][11][12][13][14] Exhilaratingly, some research on the typical outof-plane joints, including general composite tee joint [15][16][17][18][19][20][21][22][23][24][25][26] and sandwich tee joint, [27][28][29][30][31] top-hat joint [32][33][34] and single-L joint, 35,36 has been conducted. Shenoi et al 15,17,18,32,34,37 have done sequential study on the tee joint and top-hat joint applied in ship structures using computational and experimental methods.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional progressive damage models for cohesively bonded composite π joint

Zhao

Qin

Chen

et al. 2013

Journal of Composite Materials

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Integrated composite structures can significantly reduce the assembling cost and improve the performance of the aircraft. All-composite π joint, which is a connector of integrated composite structures, has good ability to reduce the weight and assembly cost while retaining good load-carrying capability. To disclose the mechanics behavior of the out-of-plane, complex all-composite joint, the progressive damage methods are investigated for its good ability to trace the damage onset, damage propagation, up to collapse of composite structures. A progressive damage model is established using a new modified maximum stress failure criterion and a material degradation model developed from Chang’s model. The material degradation model takes account of the matrix crack direction, which is predicted by the modified maximum stress-failure criterion. Meanwhile, five other progressive damage models are established and applied to static tensile analysis to study the mechanics behavior of the joint. To evaluate the prediction of the six progressive damage models in joint initial failure, damage propagation, joint strength and stiffness, the numerical results of the six progressive damage models are compared with the experiment results. The effects of failure criteria and material degradation model on the prediction results are discussed in detail. By the comparison, it can be concluded that the progressive damage model consisting of the modified maximum failure criteria and its corresponding material degradation model is considered as the best one for the analysis of the all-composite π joints, because its initial failure prediction, failure process and ultimate failure prediction agree well with the experiment result.

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Applicability of the crack tip element analysis for damage prediction of composite T-joints

Cited by 25 publications

References 7 publications

Interfacial failure analysis of functionally graded adhesively bonded double supported tee joint of laminated FRP composite plates

Interfacial failure analysis of functionally graded adhesively bonded double supported tee joint of laminated FRP composite plates

Analysis of crack formation in T-joint structures under dynamic loading

Three-dimensional progressive damage models for cohesively bonded composite π joint

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