research
Why are most 2D lattices hexagonal? The stability of 2D lattices predicted by a simple mechanics model
Published in Extreme Mechanics Letters: https://doi.org/10.1016/j.eml.2019.100507. For more than half a century, physicists rejected the existence of two-dimensional (2D) materials since they theoretically underestimated the stability. However, the discovery of one-atom-thick graphene proved the inapplicability of this theory.
Asymmetric acoustic energy transport in non-Hermitian metamaterials
One of our studies on linear and nonlinear non-Hermitian metamaterials has been published on the recent special issue of the Journal of the Acoustical Society of America: Non-Reciprocal and Topological Wave Phenomena in Acoustics.
Abstract
Submission Invitation to Special Issue of Polymers
The special issue “Design and Manufacturing of Shape Memory Polymers and Active Structures” of Polymers is now inviting submission. If you have any suitable manuscript, please consider this special issue. Feel free to contact me through geq [at] sustech.edu (geq[at]sustech[dot]edu), if you have any questions. Thank you all for your support!
Habilitation Defense
After a decade of research, I am pleased to announce that I will defense my Habilitation on "Nonlocal Mechanics and Engineering Applications" at Sorbonne University in Paris (France) on September 3, 2019. The composition of the Jury Members of my defense is as follows:
Prof. David Steigmann (UC-Berkeley, Reviewer)
Prof. Jean-Michel Bergheau (Saint Etienne School of Mine, Reviewer)
Prof. Veronique Lazarus (Paris Tech, Reviewer)
Reconstruction of Governing Equations from Vibration Measurements for Geometrically Nonlinear Systems
Data-driven system identification procedures have recently enabled the reconstruction of governing differential equations from vibration signal recordings. In this contribution, the sparse identification of nonlinear dynamics is applied to structural dynamics of a geometrically nonlinear system. First, the methodology is validated against the forced Duffing oscillator to evaluate its robustness against noise and limited data.
Magneto-elastic composite
Dear all,
May I bring your attention to recent papers of our that deals with fibre-reinforced magneto elastic composite at large strain?
https://arxiv.org/pdf/1811.11536
https://authors.elsevier.com/a/1ZVv44jvR22kv
I think the content would be of much interest for the community.
Postdoctoral Research Opportunities at EPUSP
The Fracture Mechanics and Structural Integrity Research Laboratory (NAMEF) of the Polytechnic School of Engineering at the University of São Paulo (EPUSP) has openings for 2-year postdoctoral fellows (which may be extended to an additional year depending on funding availability) with a strong background in fracture mechanics, fatigue and computational modeling of materials starting from August/2019 or September/2019. Interested applicants can see details in the attached document.
PhD Research Opportunities at EPUSP
The Fracture Mechanics and Structural Integrity Research Laboratory (NAMEF) of the Polytechnic School of Engineering at the University of São Paulo (EPUSP) has openings for 3-year PhD positions (which may be extended to an additional year) to conduct research in the areas of fracture mechanics, fatigue and computational modeling of materials starting from August/2019 or September/2019.
Flexoelectricity as a universal mechanism for energy harvesting from crumpling of thin sheets
Can the mere crumpling of a paper produce electricity? An inhomogeneous strain can induce electrical response in all dielectrics and not just piezoelectric materials. This phenomenon of flexoelectricity is rather modest unless unusually large strain gradients are present. In this paper, we analyze the crumpling of thin elastic sheets and establish scaling laws for their electromechanical behavior to prove that an extremely strong flexoelectric response is achieved at submicron length scales.