A multi-phase-field framework for non-uniform corrosion and corrosion-induced concrete cracking

Fang, Xurui; Pan, Zichao; Ma, Rujin; Chen, Airong

doi:10.1016/j.cma.2023.116196

Cited by 13 publications

(1 citation statement)

References 56 publications

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“…Recently, the phase field cohesive zone model (PF-CZM) developed by Wu [72] has been successfully used for modeling quasi-brittle materials such as concrete and showed precise capture of crack propagation in concrete under monotonic loading, covering a wide range of stress configurations in 2D and 3D applications [73]. This approach was able to capture the concrete size effect and represents a promising approach for modeling crack propagation in quasi-brittle materials, as shown in [74][75][76][77].…”

Section: Introductionmentioning

confidence: 99%

Phase-Field Modeling of Fatigue Crack Propagation in Brittle Materials

Aldakheel

Schreiber

Müller

et al. 2022

Current Trends and Open Problems in Computational Mechanics

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The phase field method has gathered significant attention in the past decade due to its versatile applications in engineering contexts, including fatigue crack propagation modeling. Particularly, the phase field cohesive zone method (PF-CZM) has emerged as a promising approach for modeling fracture behavior in quasi-brittle materials, such as concrete. The present contribution expands the applicability of the PF-CZM to include the modeling of fatigue-induced crack propagation. This study critically examines the validity of the extended PF-CZM approach by evaluating its performance across various fatigue behaviours, encompassing hysteretic behavior, S-N curves, fatigue creep curves, and the Paris law. The experimental investigations and validation span a diverse spectrum of loading scenarios, encompassing pre-and post-peak cyclic loading, as well as low-and high-cyclic fatigue loading. The validation process incorporates 2D and 3D boundary value problems, considering mode I and mixed-modes fatigue crack propagation. The results obtained from this study show a wide range of validity, underscoring the remarkable potential of the proposed PF-CZM approach to accurately capture the propagation of fatigue cracks in concrete-like materials. Furthermore, the paper outlines recommendations to improve the predictive capabilities of the model concerning key fatigue characteristics.

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Section: Introductionmentioning

confidence: 99%

Phase-Field Modeling of Fatigue Crack Propagation in Brittle Materials

Aldakheel

Schreiber

Müller

et al. 2022

Current Trends and Open Problems in Computational Mechanics

View full text Add to dashboard Cite

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Coupled chemo‐electro‐mechanical model for galvanic corrosion in clinched components

Harzheim,

Chen,

Hofmann

et al. 2024

Proc Appl Math and Mech

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Mechanical clinching is a frequently used joining method for technical components. These joints are usually weak spots. Here, corrosion and fatigue are decisive influencing factors for the assessment of the service life of such joints. Corrosion generally leads to material deterioration and thus to premature failure of the joints. Under certain circumstances, however, corrosion can lead to an increased fatigue life. While this effect has not yet been fully understood, the present work provides a possible explanation and a modeling approach to predict the fatigue life of precorroded clinched joints. The increased fatigue life is observed when the clinched components are briefly (up to 3 weeks) exposed to a salt spray environment. During this time, a small layer of corrosion products protrudes from the metal surface and fills the gaps between the joined sheets. Due to the increased contact area, the mechanical stress in the joint decreases, resulting in an improved fatigue performance. Although there are a variety of corrosion phenomena, for example, pitting, intergranular, and transgranular corrosion as well as galvanic corrosion, experimental studies indicate that galvanic corrosion is the main contributor of this effect. In the present work, a coupled electro‐chemo‐mechanical corrosion model is presented and applied to two test cases. Case I: corrosion products growth, and Case II: corrosion products growth and mechanical loading.

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