instability

Wrinkling - Theoretical Foundation, Experimental Characterization and Numerical Modeling

This course is aimed at graduate students, PhD candidates, and postdoctoral researchers in electronics/biomedical/mechanical/civil engineering, materials science, biophysics and applied mathematics. It is also valuable for senior scientists and engineers in academia and industry interested in the fundamental theoretical aspects of wrinkling phenomena, their numerical simulation and experimental characterization.

We would like to invite you to participate in the Mini-Symposium on "Nonlinear Dynamics of Slender Structures" within "HFSS2025 - 2nd International Conference on Highly Flexible Slender Structures" at Fraunhofer Institute for Industrial Mathematics ITWM, Kaiserslautern (Germany), September 22-26, 2025.

The deadline for abstract submission is March 1st, 2025.

Description of the Mini-symposium "MS-06 Nonlinear Dynamics of Slender Structures":

We would like to invite you to participate in the Mini-Symposium on "Mechanics and Physics of Structures" within "ESMC2025 - 12th European Solid Mechanics Conference" in Lyon (France), July 7-11, 2025.

The deadline for abstract submission is November 20th, 2024.

We developed a method enabling a single material system to transform with untethered, reversible, low-powered reprogrammable deformations and shape locking via the application of magneto-thermomechanically triggered prestress on the Shape Memory Polymers (SMPs) and structural instability with asymmetric magnetic torque. The mutual assistance of two physics concepts—magnetic control combined with the thermomechanical behavior of SMPs is demonstrated, without requiring new materials synthesis and high-power energy for reprogramming.

The transition between necking-mediated tensile failure of glasses, at elevated temperatures

and/or low strain-rates, and shear-banding-mediated tensile failure, at low temperatures and/or

high strain-rates, is investigated using tensile experiments on metallic glasses and atomistic simula-

tions. We experimentally and simulationally show that this transition occurs through a sequence of

macroscopic failure patterns, parametrized by the ultimate tensile strength. Quantitatively analyz-

Jie Ma, Daochen Yin, Zhi Sheng, Jian Cheng, Zheng Jia*, Teng Li, Shaoxing Qu, Delayed Tensile Instabilities of Hydrogels, Journal of the Mechanics and Physics of Solids, 168, 105052 (2022)

The Journal of Engineering Mechanics (JEM) launches a series of high-profile special issues. The first one is dedicated to “Instability and Failure of Nonclassical Materials and Nonlinear Structures”, guest edited by C.W. Lim (City University of Hong Kong), Stylianos Yiatros (Cyprus University of Technology), and Ahmer Wadee (Imperial College London). Submissions will be accepted until May 31, 2022.

For details, read the attached PDF.

We would like to invite you to participate in the Mini-Symposium on "Mechanics and Physics of Structures" within "ESMC2022 - 11th European Solid Mechanics Conference" in Galway (Ireland), July 4-8, 2022.

The deadline for abstract submission is November 19th, 2021.

Mini-symposium Organizers
Sebastien Neukirch (CNRS/UPMC),
Benoit Roman (CNRS/UPMC),
Keith Seffen (University of Cambridge),
Francesco Dal Corso (University of Trento)

We combine experiment and finite element simulation and come up with a design of a mechanical metamaterial which demonstrates snap-back induced hysteresis and energy dissipation. The resultant is an elastic system that can be used reversibly for many times. The underlying mechanism of existence of hysteresis and the physics of snap-back induced elastic instability is unveiled. Our results open an avenue for design and implementation of recoverable energy dissipation devices by harnessing mechanical instability.