research

Dear iMechanicians, I hope that you find the below work interesting. We have developed a phase field-based computational framework for predicting fatigue crack nucleation and growth in Shape Memory Alloys. The model captures the role of transformation stresses, stress-strain hysteresis, and temperature. And this is demonstrated by computing Δε − N curves, quantifying Paris law parameters, and predicting fatigue crack growth rates in several geometries, including the fatigue failure of a 3D lattice structure. 

Liquid Nanofoam: Past, Present and Future

Mingzhe Li and Weiyi Lu

Department of Civil and Environmental Engineering, Michigan State University

1. Introduction

The motion of filament-like structures in fluid media has been a topic of interest since long. In this regard, a well known slender body theory exists wherein the fluid flow is assumed to be Stokesian while the filament is modeled as a Kirchhoff rod which can bend and twist but remains inextensible and unshearable. In this work, we relax the inextensibility and unshearability constraints on filaments, i.e., the filament is modeled as a special Cosserat rod.

Exceptionally high saturation magnetisation in Eu-doped magnetite stabilised by spin–orbit interaction

Unusual ferrimagnetic ground state in rhenium ferrite

Abstract

https://doi.org/10.1140/epjb/s10051-021-00272-y

Abstract 

Abhishek Arora, Rajat Arora, Amit Acharya

http://dx.doi.org/10.1063/5.0080849

Abstract

A highly stretched hyperelastic shell exhibits a coupling behavior of local wrinkling and global bending within the stability boundary, and curvature resists and can even suppress surface wrinkles beyond a critical threshold. Here, we report a novel phenomenon that smooth surface maintains upon stretching a soft shell, while wrinkles emerge upon unloading, which implies a nonlinear interplay between curvature and Mullins (stress softening and residual strain) effects in the entire loading-unloading cycle.