research
Circumferential instabilities in radially incompatible tubes
The full paper can be found at:
https://authors.elsevier.com/c/1b2plc7qwXwm0
Abstract:
Geometric incompatibilities are ubiquitous in natural structures and are recently being exploited in synthetic
structures to enhance the performance of soft systems. In this work we focus on infinitely long bi-layer
neo-Hookean tubes with radial incompatibilities, i.e. the outer radius of the inner tube is different than the inner
Modeling and simulation for Covid-19 using machine learning and computational methods
The full video of a recent symposium organized by the Young Academy of Europe on Covid-19 epidemiology is now online on YouTube, see: https://www.youtube.com/watch?v=Sy1qVBs6fHI
EML Webinar by Prof. Xuanhe Zhao on May 6, 2020
EML Webinar on May 6, 2020 will be given by Prof. Xuanhe Zhao at MIT via Zoom meeting.
Title: Extreme Mechanics of Soft Materials for Merging Human-Machine Intelligence
Time: 7 am California, 10 am Boston, 3 pm London, 10 pm Beijing on May 6, 2020
Zoom Link: https://harvard.zoom.us/j/271079684
Zoom ID: 271 079 684
A linearised consistent mixed displacement-pressure formulation for hyperelasticity
If you are working on FEM for hyperelastic materials, then you might be interested in our new paper.
Self-excited vibrations due to viscoelastic interactions
Self-excited vibrations represent a big concern in engineering, particularly in automotive, railway and aeronautic industry. Many lumped models have been proposed over the years to analyze the stability of such systems. Among the instability mechanisms a falling characteristic of the friction law and mode coupling have been shown to give friction-excited oscillations. The mass-on-moving-belt system has been studied extensively in Literature, very often adopting a prescribed form of the friction law and linearizing the contact stiffness.
Mechanistic origins of work hardening in shape memory alloy particle reinforced ex-situ bulk metallic glass matrix composites
Monolithic Bulk Metallic Glasses (BMGs) exhibit strain softening or elastic-perfectly plastic response under uniaxial loading. However, shape memory alloy particle reinforced BMG matrix composites show strong work hardening in experiments. In our recent paper published in Scripta Materialia, we explain the Mechanistic origins of work hardening in shape memory alloy particle reinforced ex-situ bulk metallic glass matrix composites through three dimensional finite element simulations.
Bioinspired Materials with Self‐Adaptable Mechanical Properties
Dear iMechanica,
We are very excited to share the news that our recent work on bioinspired materials with self‐adaptable mechanical properties is published in Advanced Materials.
https://onlinelibrary.wiley.com/doi/abs/10.1002/adma.201906970
The work was done in collaboration with Prof. Kang from Johns Hopkins University
A Phase-Field Model for Non-Isothermal Phase Transformation and Plasticity in Polycrystalline Yttria-Stabilized Tetragonal Zirconia
C. Cissé and M. Asle Zaeem. A phase-field model for non-isothermal phase transformation and plasticity in polycrystalline yttria-stabilized tetragonal zirconia. Acta Materialia 191 (2020) 111-123.