EML Webinar on May 13, 2020 will be given by Prof. Katia Bertoldi at Harvard University via Zoom meeting.
Title: Multistable structures - from energy trapping to morphing
Time: 7 am California, 10 am Boston, 3 pm London, 10 pm Beijing on May 13, 2020
Zoom Link: https://harvard.zoom.us/j/271079684
Zoom ID: 271 079 684
We present a singularity free formulation and its efficient numerical implementation for the spatial deformation of Kirchhoff rods having uniformly distributed electrostatic charge. Due to the presence of continuously distributed charge, the governing equations of the Kirchhoff rod become a system of integro-differential equations which is singular at every arc-length. We show that this singularity is of removable type which, ones removed, makes the system well defined everywhere. No cutoff length or mollifier is used to remove this singularity.
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
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 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
If you are working on FEM for hyperelastic materials, then you might be interested in our new paper.
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.
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.
