Discrete damage modeling of static bearing failure in laminated composites

Iarve, Endel V.; Hoos, Kevin H.; Nikishkov, Yuriy; Makeev, Andrew

doi:10.1016/j.compositesa.2018.02.019

Cited by 32 publications

(2 citation statements)

References 25 publications

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“…There are multiple notable authors who have done extensive amount of work, for example, Yang and co-authors. [33,43,50], Iarve et al [35,51,52] and Van Der Meer et al [34,[53][54][55], are among the early few groups to approach discrete damage modeling in composite laminates. Indeed, Yang is one of the contributors in Augmented Finite Element Method (A-FEM) mentioned above [33,43], which is a essential fundamental of the first type of method (element partitioning), Yang also contributed in the second type of method (element embedding) referred here as work by Joosten et al [47].…”

Section: Discussionmentioning

confidence: 99%

An Auto-Generated Geometry-Based Discrete Finite Element Model for Damage Evolution in Composite Laminates with Arbitrary Stacking Sequence

Liu,

Phoenix

2020

Preprint

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Stiffness degradation and progressive failure of composite laminates are complex processes involving evolution and multi-mode interactions among fiber fractures, intra-ply matrix cracks and inter-ply delaminations. This paper presents a novel finite element model capable of explicitly treating such discrete failures in laminates of random layup. Matching of nodes is guaranteed at potential crack bifurcations to ensure correct displacement jumps near crack tips and explicit load transfer among cracks. The model is entirely geometry-based (no mesh prerequisite) with distinct segments assembled together using surface-based tie constraints, and thus requires no element partitioning or enrichment. Several numerical examples are included to demonstrate the model's ability to generate results that are in qualitative and quantitative agreement with experimental observations on both damage evolution and tensile strength of specimens. The present model is believed unique in realizing simultaneous and accurate coupling of all three types of failures in laminates having arbitrary ply angles and layup.

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Section: Discussionmentioning

confidence: 99%

An Auto-Generated Geometry-Based Discrete Finite Element Model for Damage Evolution in Composite Laminates with Arbitrary Stacking Sequence

Liu,

Phoenix

2020

Preprint

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“…Regularized Extended Finite Element Method (Rx-FEM), is one such technique which allows modeling displacement discontinuities associated with matrix cracks without regard to mesh orientation by inserting additional degrees of freedom during the simulation process [11]. Rx-FEM model has been successfully applied to various engineering problems and was able to predict the progression of damage accurately [12,13].…”

Section: Introductionmentioning

confidence: 99%

Global Prediction of Discrete Local Damage Interactions Using Broadband Dielectric Spectroscopy

Vadlamudi¹,

Elenchezhian²,

Shaik³

et al. 2018

American Society for Composites 2018

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With the increasing demand for composites in many modern applications, it is important to predict the initiation of failure events. Due to the heterogeneous nature of these materials, a single damage mode will not lead to final failure, hence detecting the initiation and growth of a single crack (defect) will not yield accurate predictions of the strength or the material state. It is important to capture the interaction of various damage modes that tend to change the material state leading to initiation of failure. To assess the material state, one needs to determine the appropriate global physical variables that can capture the interaction of local damage events that lead to progressive degradation of materials. In the recent past, various researchers have turned towards the application of vector electric fields that can interact with various local damage events created by single or multiple loading events. Broadband Dielectric Spectroscopy (BbDS) is one such robust technique that can predict the interaction of such local events. In the current research, Regularized Extended Finite Element Method (Rx-FEM), which allows modeling displacement discontinuities _____________

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