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1. Modeling of Springback Behavior in AA6016-T4 Sheet via an Elastoplastic Self-consistent Model Incorporating Backstress

   Dane Sargeant, Md. Zahidul (February 2022, Light Metals 2022)

   Dmitry Eskin (Ed.)

   Automotive stampings undergo complex strain paths during drawing, stretching, and bending operations which develop large plastic strain gradients within the material. Aluminum sheet alloys are increasingly used for vehicle structure lightweighting, but limited formability and high levels of springback present challenges to the manufacturing and assembly processes. The current work explores the springback levels in AA6016-T4 sheet after pure bending operations. Finite element modeling is performed using both isotropic and elasto-plastic self-consistent (EPSC) crystal plasticity approaches. The EPSC model incorporates backstresses informed by GND content, as measured via high-resolution EBSD. Its predictions are shown to be more accurate than those of the isotropic model. The benefits and limitations of the current EPSC model are discussed. 

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2. Development of Backstress Under Different Strain Paths in an Aluminum Alloy: Stress Dip Testing and Modeling

   https://doi.org/10.1007/s11661-024-07659-3  

   Webb, Asher; Sarkar, Md Zahidul; Miles, Michael P; Knezevic, Marko; Fullwood, David T (January 2025, Metallurgical and Materials Transactions A)
3. Comparative assessment of backstress models using high-energy X-ray diffraction microscopy experiments and crystal plasticity finite element simulations

   https://doi.org/https://doi.org/10.1016/j.ijplas.2020.102887  

   Bandyopadhyay, R.; Gustafson, S. E.; Kapoor, K.; Naragani, D.; Pagan, D. C.; Sangid, M. D. (January 2021, International journal of plasticity)

   null (Ed.)
4. Springback behavior after air bending of pre-strained AA 6016-T4 sheets: Influence of dislocation density and backstress on model accuracy

   https://doi.org/10.1016/j.jmapro.2024.09.055  

   Sarkar, Md Zahidul; Sargeant, Dane; Sharma, Rishabh; Knezevic, Marko; Fullwood, David T; Miles, Michael P (December 2024, Journal of Manufacturing Processes)
5. A measurement of the equation of state of carbon envelopes of white dwarfs

   https://doi.org/10.1038/s41586-020-2535-y  

   Kritcher, Andrea L.; Swift, Damian C.; Döppner, Tilo; Bachmann, Benjamin; Benedict, Lorin X.; Collins, Gilbert W.; DuBois, Jonathan L.; Elsner, Fred; Fontaine, Gilles; Gaffney, Jim A.; et al (August 2020, Nature)

   null (Ed.)