Towards three dimensional aspects of plasticity-induced crack closure: A finite element simulation

Paysan, Florian; Breitbarth, Eric

doi:10.1016/j.ijfatigue.2022.107092

Cited by 15 publications

(5 citation statements)

References 26 publications

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“…The three-dimensional growth shapes of through cracks in single-edge crack plates with varying thicknesses can be determined using Eq. (17). The resulting crack growth shapes for plates of different thicknesses are visually depicted in Figure 7.…”

Section: Crack Growth Shape Analysismentioning

confidence: 99%

“…In recent years, the evolution of fatigue crack shapes has emerged as a topic of considerable interest. Numerous research studies have been undertaken to investigate crack shapes [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18], and the collective findings suggest that finite thickness specimens exhibit a phenomenon known as the "tunneling effect." Specifically, in specimens with an initially straight crack that eventually penetrates, the central crack front advances ahead of all others as the loading cycles progress.…”

Section: Introductionmentioning

confidence: 99%

“…The objective is to adjust the value of C until the calculated ratio of the stress intensity factor at the crack tip to C equals the value of Kimax/C as calculated by Eq. (17). Once this equilibrium is achieved, the crack shape can be accurately calculated.…”

mentioning

confidence: 99%

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Effect of specimen thickness on fatigue crack shape evolution for aluminum alloy

Wu,

He,

Zhang

2024

J. Phys.: Conf. Ser.

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The investigation of fatigue crack propagation and fracture mechanisms in high-thickness metal plates holds pivotal importance in the advancement of a three-dimensional damage tolerance assessment methodology. This research also bears significant implications for ensuring the safe operation of large-scale mechanical equipment. In this study, we examine the influence of specimen thickness on the evolution of fatigue crack shapes in an aluminum alloy. Fatigue crack growth tests were conducted on single-edge notch tension specimens to explore the impact of specimen thickness on the shape of fatigue crack growth. Additionally, we propose a calculation model for crack growth shape based on an energy model in this paper. Both experimental and analytical findings indicate that specimen thickness does indeed exert an influence on fatigue crack shape. Specifically, as the specimen thickness increases, the crack shape transitions from resembling a “fingernail” to a “saddle” shape.

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Section: Crack Growth Shape Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of specimen thickness on fatigue crack shape evolution for aluminum alloy

Wu,

He,

Zhang

2024

J. Phys.: Conf. Ser.

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“…Common feedback systems include encoders, sensors and force sensors. Encoders can monitor the angle and position of the manipulator joints, sensors can monitor the position and strength of the end of the manipulator, and force sensors can monitor the strength of the manipulator during the gripping process [10] . Auxiliary mechanisms include brackets, guide rails, and control systems, etc., which are used to provide stable support and motion control for the manipulator.…”

Section: Optimization Of the Scheme Based On Morphological Matricesmentioning

confidence: 99%

Analysis and optimization of key structural components of handling manipulator based on fatigue simulation and finite element simulation

2024

Fourth International Conference on Applied Mathematics, Modelling, and Intelligent Computing (CAMMIC 2024)

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This study analyzes and optimizes the key structural components of a handling manipulator based on fatigue simulation and finite element simulation methods. Taking the handling manipulator as the research object, the structural design scheme of the manipulator is optimized based on the morphological matrix method. The key structural components of the handling manipulator are analyzed by fatigue simulation and finite element simulation methods to verify the accuracy of the theoretical derivation. The results show that the computer-controlled flatbed manipulator is the best design scheme, and the fatigue value of the gear transmission method is smaller, the stress value of the clamping claw mechanism is smaller, and the stress distribution is more uniform, with a maximum stress of 47.5 N/mm2.The proposed manipulator can effectively prolong its working life, and lays a theoretical foundation for the optimization of the manipulator's structural design and mechanical properties.

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“…Detailed discussions on these mechanisms can be found in the cited sources, such as [21] for a concise overview and [22][23] [24][25] for in-depth analyses. In a recent study by Paysan [26], simulations were carried out to investigate crack closure mechanisms influenced by plasticity using a three-dimensional finite element method. The 3D finite element EPFM model was employed to accurately capture the three-dimensional aspects of crack closure.…”

Section: Propagation Of Short Cracksmentioning

confidence: 99%

Residual Life Prediction of Railway Axle: A Review

Maulana,

Gunawan

2023

JPI

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Meskipun dirancang untuk beroperasi selama lebih dari 30 tahun, poros roda kereta api sering mengalami kerusakan selama masa penggunaannya. Kerusakan dapat terjadi akibat pengaruh lingkungan, benturan benda asing, atau ketidaksempurnaan material. Makalah ini memberikan gambaran tentang kerusakan umum yang sering terjadi pada poros roda kereta api dan membahas model perhitungan pertumbuhan retakan kelelahan yang digunakan untuk menganalisis umur sisa, serta parameter yang mempengaruhi kegagalan kelelahan pada poros roda kereta api. Kemudian, studi terkait prediksi umur kelelahan yang telah dilakukan oleh beberapa peneliti telah ditinjau. Studi-studi tersebut menunjukkan bahwa penting mempertimbangkan berbagai variasi data saat melakukan perhitungan untuk menghasilkan hasil yang akurat dan dapat diandalkan. Kata Kunci: fatigue poros roda kereta api, Prediksi umur sisa, Perambatan retak

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Towards three dimensional aspects of plasticity-induced crack closure: A finite element simulation

Cited by 15 publications

References 26 publications

Effect of specimen thickness on fatigue crack shape evolution for aluminum alloy

Effect of specimen thickness on fatigue crack shape evolution for aluminum alloy

Analysis and optimization of key structural components of handling manipulator based on fatigue simulation and finite element simulation

Residual Life Prediction of Railway Axle: A Review

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