A thermo-elastic-plastic phase-field model for simulating the evolution and transition of adiabatic shear band. Part II. Dynamic collapse of thick-walled cylinder

Wang, T.; Liu, Z.L.; Cui, Yinan; Ye, X.; Liu, X.M.; Tian, Rong; Zhuang, Zhuo

doi:10.1016/j.engfracmech.2020.107027

Cited by 34 publications

(9 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Also, Wang et al [153] identified that the number and spacing of ASBs within a collapsed shell depend on both material properties and strain rate. For 304L stainless steel [153,154] and Ti-6Al-4V [153] collapsed/expanding shells, damage softening was reported as the key factor that drives ASB propagation, while prior thermal softening clarifies the Reprinted from [152] with permission from Elsevier. Also, Wang et al [153] identified that the number and spacing of ASBs within a collapsed shell depend on both material properties and strain rate.…”

Section: Asb Evolutionmentioning

confidence: 99%

“…For 304L stainless steel [153,154] and Ti-6Al-4V [153] collapsed/expanding shells, damage softening was reported as the key factor that drives ASB propagation, while prior thermal softening clarifies the Reprinted from [152] with permission from Elsevier. Also, Wang et al [153] identified that the number and spacing of ASBs within a collapsed shell depend on both material properties and strain rate. For 304L stainless steel [153,154] and Ti-6Al-4V [153] collapsed/expanding shells, damage softening was reported as the key factor that drives ASB propagation, while prior thermal softening clarifies the locations where the ASBs initiate.…”

Section: Asb Evolutionmentioning

confidence: 99%

See 1 more Smart Citation

A Review on the Adiabatic Shear Banding Mechanism in Metals and Alloys Considering Microstructural Characteristics, Morphology and Fracture

Karantza,

Manolakos

2023

Metals

View full text Add to dashboard Cite

The current review work studies the adiabatic shear banding (ASB) mechanism in metals and alloys, focusing on its microstructural characteristics, dominant evolution mechanisms and final fracture. An ASB reflects a thermomechanical deformation instability developed under high strain and strain rates, finally leading to dynamic fracture. An ASB initially occurs under severe shear localization, followed by a significant rise in temperature due to high strain rate adiabatic conditions. That temperature increase activates thermal softening and mechanical degradation mechanisms, reacting to strain instability and facilitating micro-voiding, which, through its coalescence, results in cracking failure. This work aims to summarize and review the critical characteristics of an ASB’s microstructure and morphology, evolution mechanisms, the propensity of materials against an ASB and fracture mechanisms in order to highlight their stage-by-stage evolution and attribute them a more consecutive behavior rather than an uncontrollable one. In that way, this study focuses on underlining some ASB aspects that remain fuzzy, allowing for further research, such as research on the interaction between thermal and damage softening regarding their contribution to ASB evolution, the conversion of strain energy to internal heat, which proved to be material-dependent instead of constant, and the strain rate sensitivity effect, which also concerns whether the temperature rise reflects a precursor or a result of ASB. Except for conventional metals and alloys like steels (low carbon, stainless, maraging, armox, ultra-high-strength steels, etc.), titanium alloys, aluminum alloys, magnesium alloys, nickel superalloys, uranium alloys, zirconium alloys and pure copper, the ASB propensity of nanocrystalline and ultrafine-grained materials, metallic-laminated composites, bulk metallic glasses and high-entropy alloys is also evaluated. Finally, the need to develop a micro-/macroscopic coupling during the thermomechanical approach to the ASB phenomenon is pointed out, highlighting the interaction between microstructural softening mechanisms and macroscopic mechanical behavior during ASB evolution and fracture.

show abstract

Section: Asb Evolutionmentioning

confidence: 99%

Section: Asb Evolutionmentioning

confidence: 99%

A Review on the Adiabatic Shear Banding Mechanism in Metals and Alloys Considering Microstructural Characteristics, Morphology and Fracture

Karantza,

Manolakos

2023

Metals

View full text Add to dashboard Cite

show abstract

“…This section presents the 3D finite element model developed in ABAQUS/Explicit (2016) to investigate multiple shear banding in thick-walled cylinders subjected to rapid radial collapse. While this problem is customarily simulated using a 2D approach (Areias and Belytschko, 2007;Lovinger et al, 2011;Liu et al, 2016;Wang et al, 2020), in this paper we have developed a 3D version of the numerical model employed by Lovinger et al (2018) -which is based on the experimental setup of Lovinger et al (2015)-in order to consider explicitly the porous microstructure of the specimen. The finite element model consists of three sandwiched cylinders: an inner copper cylinder (inner diameter 3.25 mm, outer diameter 3.5 mm), the specimen of the tested material (inner diameter 3.5 mm, outer diameter 5.0 mm) and an outer copper cylinder (inner diameter 5.0 mm, outer diameter 5.5 mm).…”

Section: Finite Element Modelmentioning

confidence: 99%

New insights into the role of porous microstructure on adiabatic shear localization

Vishnu¹,

Marvi-Mashhadi²,

Nieto-Fuentes³

et al. 2021

Preprint

View full text Add to dashboard Cite

This paper provides new insights into the role of porous microstructure on adiabatic shear localization. For that purpose, we have performed 3D finite element calculations of electro-magnetically collapsing thick-walled cylinders. The geometry and dimensions of the cylindrical specimens are taken from the experiments of Lovinger et al. (2015), and the loading and boundary conditions from the 2D simulations performed by Lovinger et al. (2018). The mechanical behavior of the material is modeled as elastic-plastic, with yielding described by the von Mises criterion, an associated flow rule and isotropic hardening/softening, being the flow stress dependent on strain, strain rate and temperature. Moreover, plastic deformation is considered to be the only source of heat, and the analysis accounts for the thermal conductivity of the material. The distinctive feature of this work is that we have followed the methodology developed by Marvi-Mashhadi et al. (2021) to incorporate into the finite element calculations the actual porous microstructure of 4 different additively manufactured materials --aluminium alloy AlSi10Mg, stainless steel 316L, titanium alloy Ti6Al4V and Inconel 718-- for which the initial void volume fraction varies between 0.001% and 2%, and the pores size ranges from ≈ 6 µm to ≈ 110 µm. The numerical simulations have been performed using the Coupled Eulerian-Lagrangian approach available in ABAQUS/Explicit (2016) which allows to capture the shape evolution, coalescence and collapse of the voids at large strains. To the authors' knowledge, this paper contains the first finite element simulations with explicit representation of the material porosity which demonstrate that voids promote dynamic shear localization, acting as preferential sites for the nucleation of the shear bands, speeding up their development, and tailoring their direction of propagation. In addition, the numerical calculations bring out that for a given void volume fraction more shear bands are nucleated as the number of voids increases, while the shear bands are incepted earlier and develop faster as the size of the pores increases.

show abstract

“…在此基础上, 考虑到金属受冲击加载时材料自身的应变率效应 [80] 、绝热温升软化 [81] 等问题, 建立起模拟金属材料变形失效的相场理论模型. Wang等人 [82] 基于系统自由能密度取极小值推导相场演化方程, 提出了一种借助商用有限元软件 [84] . 最近, Xu等人 [85] 图 6 (网络版彩色)多晶体塑性有限元模拟含Goss织构纳米结构 FCC金属中失稳演化和ASB形成的全过程 [39] .…”

Section: 模拟计算结果表明两种软化机制对Asb的形成均起unclassified

“…Figure7(Color online) The distribution of self-organizing adiabatic shear bands in TC4 titanium alloy (a) and 304 stainless steel thickwalled rings (b) was simulated by phase field method[84] …”

mentioning

confidence: 99%

Advances in formation mechanisms and multiscale simulations of adiabatic shear bands in metallic materials

Li¹,

Dou²,

Suo³

2021

Chin. Sci. Bull.

View full text Add to dashboard Cite

A thermo-elastic-plastic phase-field model for simulating the evolution and transition of adiabatic shear band. Part II. Dynamic collapse of thick-walled cylinder

Cited by 34 publications

References 45 publications

A Review on the Adiabatic Shear Banding Mechanism in Metals and Alloys Considering Microstructural Characteristics, Morphology and Fracture

A Review on the Adiabatic Shear Banding Mechanism in Metals and Alloys Considering Microstructural Characteristics, Morphology and Fracture

New insights into the role of porous microstructure on adiabatic shear localization

Advances in formation mechanisms and multiscale simulations of adiabatic shear bands in metallic materials

Contact Info

Product

Resources

About