Person
Arefeh Abbasi
This person is no longer with EPFL
Related publications (7)
Instabilities in Elastic and Magneto-Elastic Beams and Shells: from Shell Buckling to the Design of a Programmable Braille Reader
In this thesis, we conduct a comprehensive investigation into structural instabilities of both elastic and magneto-elastic beams and shells, resulting in a creative proposal to design a programmable braille reader. Methodologically, we combine numerical si ...
EPFL2024Snap buckling of bistable beams under combined mechanical and magnetic loading
Pedro Miguel Nunes Pereira de Almeida Reis, Dong Yan, Tomohiko Sano, Arefeh Abbasi
We investigate the mechanics of bistable, hard-magnetic, elastic beams, combining experiments, finite-element modelling (FEM) and a reduced-order theory. The beam is made of a hard magneto-rheological elastomer, comprising two segments with antiparallel ma ...
ROYAL SOC2023Comparing the Buckling Strength of Spherical Shells With Dimpled Versus Bumpy Defects
Pedro Miguel Nunes Pereira de Almeida Reis, Fani Derveni, Arefeh Abbasi
We investigate the effect of defect geometry in dictating the sensitivity of the critical buckling conditions of spherical shells under external pressure loading. Specifically, we perform a comparative study between shells containing dimpled (inward) versu ...
ASME2023Leveraging the Snap Buckling of Bistable Magnetic Shells to Design a Refreshable Braille Dot
Pedro Miguel Nunes Pereira de Almeida Reis, Tian Chen, Arefeh Abbasi, Bastien Freddy Gustave Aymon
A design concept is proposed for the building block, a dot, of programmable braille readers utilizing bistable shell buckling, magnetic actuation, and pneumatic loading. The design process is guided by Finite Element simulations, which are initially valida ...
Hoboken2023A comprehensive framework for hard-magnetic beams: Reduced-order theory, 3D simulations, and experiments
Pedro Miguel Nunes Pereira de Almeida Reis, Dong Yan, Arefeh Abbasi
Thin beams made of magnetorheological elastomers embedded with hard-magnetic particles (hard-MREs) are capable of large deflections under an applied magnetic field. We propose a comprehensive framework, comprising a beam model and 3D finite element modelin ...
PERGAMON-ELSEVIER SCIENCE LTD2022Probing the buckling of pressurized spherical shells
Pedro Miguel Nunes Pereira de Almeida Reis, Dong Yan, Arefeh Abbasi
The prediction of the critical buckling conditions of shell structures is plagued by imperfection sensitivity. Non-destructive testing through point-load probing has been recently proposed to map the stability landscape of cylindrical shells. However, the ...
2021Magneto-active elastic shells with tunable buckling strength
Pedro Miguel Nunes Pereira de Almeida Reis, Matteo Pezzulla, Dong Yan, Arefeh Abbasi
Shell buckling is central in many biological structures and advanced functional materials, even if, traditionally, this elastic instability has been regarded as a catastrophic phenomenon to be avoided for engineering structures. Either way, predicting crit ...
2021