A continuum damage-based computational methodology for crack growth simulation of metal films

Sun, Bin; Xu, Zhao‐Dong

doi:10.1007/s12034-021-02430-5

Cited by 2 publications

(1 citation statement)

References 40 publications

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“…Therefore, the influence of the internal compressive stress of the material on the damage of the material (which will promote crack healing) can be removed through coupling, and the Lemaitre damage model of the Cr5 alloy steel with only tensile stress is obtained. The traditional Lemaitre damage model is modified to obtain the modified Lemaitre damage model [ 38 ].…”

Section: Establishment Of High-temperature Damage Model Of Cr5 Alloy ...mentioning

confidence: 99%

An Enhanced Lemaitre Model and Fracture Map for Cr5 Alloy Steel during High-Temperature Forming Process

et al. 2022

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To effectively control and predict crack defects in the high-temperature forming process of Cr5 alloy steel, based on the traditional Lemaitre damage model, a new high-temperature damage model of Cr5 alloy steel was proposed which considered the change of material elastic modulus with temperature, the influence of material hydrostatic pressure as well as temperature and strain rate on material damage. Because Cr5 alloy steels are usually forged at high temperatures, tensile testing is an important method to study the damage behaviour of materials. Through the high-temperature tensile test and elastic modulus measurement test of the Cr5 alloy steel, the stress–strain curves and the relationship curves of the elastic modulus value with the temperature of Cr5 alloy steel under different temperatures and strain rates were obtained. A new high-temperature damage model of Cr5 alloy steel was built by introducing the Zener–Hollomon coefficient considering the influence of temperature and strain rate. The established high-temperature damage model was embedded in Forge® finite element software through the program’s secondary development method to numerically simulate the experimental process of Cr5 alloy steel. Comparing the difference between the displacement–load curves of the numerical simulation and the actual test of the tensile process of the experimental samples, the correlation coefficient R2 is 0.987 and the difference between the experimental value and the simulated value of the tensile sample elongation at break is 1.28%. The accuracy of the high-temperature damage model of Cr5 alloy steel established in this paper was verified. Finally, the high-temperature damage map of Cr5 alloy steel was constructed to analyse the variation law of various damage parameters with the temperature and strain rate of the high-temperature damage model of Cr5 alloy steel.

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Section: Establishment Of High-temperature Damage Model Of Cr5 Alloy ...mentioning

confidence: 99%

An Enhanced Lemaitre Model and Fracture Map for Cr5 Alloy Steel during High-Temperature Forming Process

et al. 2022

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Tailoring the Reaction Path: External Crack Initiation in Reactive Al/Ni Multilayers

Matthes,

Glaser,

Vardo

et al. 2024

Adv Eng Mater

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The influence of intentionally externally induced cracks in reactive Al/Ni multilayer systems is investigated. These cracks affect the reaction dynamics and enable tailoring of the reaction path and the overall velocity of the reaction front. The influence of layer variations onto mechanical crack formation and resulting reaction behavior are investigated. High‐speed camera imaging shows the meandering propagation of the reaction front along the crack paths. Therefore, the mechanical cracking process significantly changes the total velocity of the reaction front and thus offers a possibility to control the self‐propagating high‐temperature synthesis process. It is shown that the phase formation remains unaffected despite the applied strains and cracks. This favorable stability in phase formation ensures predictability and provides insight into the adaptation of RMS for precision applications in joints. The results expand the understanding of mechanical cracking as a tool to influence high temperature synthesis in reactive multilayer coatings and provide an opportunity to expand the range of applications.This article is protected by copyright. All rights reserved.

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A continuum damage-based computational methodology for crack growth simulation of metal films

Cited by 2 publications

References 40 publications

An Enhanced Lemaitre Model and Fracture Map for Cr5 Alloy Steel during High-Temperature Forming Process

An Enhanced Lemaitre Model and Fracture Map for Cr5 Alloy Steel during High-Temperature Forming Process

Tailoring the Reaction Path: External Crack Initiation in Reactive Al/Ni Multilayers

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