Experiment and modeling based studies of the mesoscaled deformation and forming limit of Cu/Ni clad foils using a newly developed damage model

Wang, Chuanjie; Wang, Haiyang; Chen, Gang; Zhu, Qiang; Zhang, Peng; Fu, Ming

doi:10.1016/j.ijplas.2021.103173

Cited by 23 publications

(3 citation statements)

References 61 publications

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“…At this time, the stress state is more complicated. The method adopted by many scholars is to extract the stress state parameters using finite element simulation [24][25][26]. In this study, ABAQUS/Standard finite element v.2022 software was used to model the gauge sections of different types of specimens.…”

Section: Fracture Modelmentioning

confidence: 99%

Prediction of Hot Formability of AA7075 Aluminum Alloy Sheet

Wang

Sui

Guan

2023

Metals

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A uniaxial high-temperature tensile test of an AA7075 aluminum alloy sheet was conducted using an established induction heating test system. Five different types of specimens were designed to obtain the stress–strain curves at different forming temperatures and strain rates so as to construct and modify the Johnson–Cook constitutive model. The uniaxial tensile test of different stress states was numerically simulated using ABAQUS finite element software, and the stress triaxiality and equivalent fracture strain parameters were extracted. The Johnson–Cook ductile fracture model was constructed, and an error evaluation scheme was designed to determine the best failure parameter combination. Based on the obtained Johnson–Cook ductile fracture model, finite element models of different strain paths were constructed, and theoretical forming limit curves at different temperatures and strain rates were obtained. The results of the Nakazima test and finite element simulation are mostly consistent, which confirms the reliability of the constructed fracture model and theoretical forming limit curves.

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Section: Fracture Modelmentioning

confidence: 99%

Prediction of Hot Formability of AA7075 Aluminum Alloy Sheet

Wang

Sui

Guan

2023

Metals

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“…Wang [11][12][13][14] proposed that the surface grains of the workpiece are softer compared to the internal grains and divided the workpiece grains into three different regions, namely: grains constrained by fixtures, internal grains and free surface grains.…”

Section: Iintroductionmentioning

confidence: 99%

Influence of Diamond Tool Quality on Surface Roughness and Methods of Improving Surface Roughness

Zhuang

Liu²,

Zong³

et al. 2023

Preprint

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Spherical/aspherical mirrors are widely used in optical and imaging systems, but their reflectivity is influenced by the surface roughness values. In this paper, the influence of the quality of diamond tool on the surface roughness of workpiece is systematically studied. The quality of diamond tools can be divided into two categories: the waviness of tool tip and the quality of cutting edge of diamond tools. The full arc waviness of diamond tools is obtained by Gauss filtering method, and the evaluation accuracy is equivalent to that of commercial testing equipment. According to Hertz contact theory and three-dimensional topography of diamond cutting edge surface, the friction coefficient model between cutting edge and workpiece is established. According to the stress of the material, the relationship between the three-dimensional shape of the cutting edge and the elastic recovery is obtained. Passivating the cutting edge of the tool improves the quality of the cutting edge and finally improves the quality of the machined surface. In order to ensure the waviness of the tool tip arc, this paper puts forward a method to restrain the wear of diamond tools. In order to restrain tool wear, the combination of diamond tool crystal plane and diamond material were optimized in this paper. Through the above theoretical analysis and influence law, it can provide guidance for the subsequent high-quality machining of spherical/aspheric surfaces.

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“…The fracture angle and local inhomogeneous deformation bands could also be predicted by considering the effect of plastic anisotropy into the model [14]. In addition to the FLD, a generalised forming limit diagram (GFLD) allowing proportional loading with all six independent stress components could be obtained by using the M-K model [15], which has been applied to the prediction of the mesoscaled deformation of clad foils [16].…”

Section: Introductionmentioning

confidence: 99%

Development of a Formability Prediction Model for Aluminium Sandwich Panels with Polymer Core

Liu

et al. 2022

Materials

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In the present work, the compatibility relationship on the failure criteria between aluminium and polymer was established, and a mechanics-based model for a three-layered sandwich panel was developed based on the M-K model to predict its Forming Limit Diagram (FLD). A case study for a sandwich panel consisting of face layers from AA5754 aluminium alloy and a core layer from polyvinylidene difluoride (PVDF) was subsequently conducted, suggesting that the loading path of aluminium was linear and independent of the punch radius, while the risk for failure of PVDF increased with a decreasing radius and an increasing strain ratio. Therefore, the developed formability model would be conducive to the safety evaluation on the plastic forming and critical failure of composite sandwich panels.

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Experiment and modeling based studies of the mesoscaled deformation and forming limit of Cu/Ni clad foils using a newly developed damage model

Cited by 23 publications

References 61 publications

Prediction of Hot Formability of AA7075 Aluminum Alloy Sheet

Prediction of Hot Formability of AA7075 Aluminum Alloy Sheet

Influence of Diamond Tool Quality on Surface Roughness and Methods of Improving Surface Roughness

Development of a Formability Prediction Model for Aluminium Sandwich Panels with Polymer Core

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