A recently published paper "Evaluating the macroscopic yield behaviour of trabecular bone using a nonlinear homogenisation approach" links the micromechanics of bone to its macroscopic behaviour. The paper may be of interest to colleagues on this forum. The abstract is provided below.
Abstract:
Plastic deformation in metallic glasses is highly localized and often associated with shear banding, which may cause momentary release of heat upon fracture. Here, we report an explosive fracture phenomenon associated with momentary (∼10 ms) light emission (flash) in Lanthanum-based (LaAlNi) metallic glass microwires (dia. ∼50 μm) under quasi-static tensile loading.
The Executive Committee of the ASME Applied Mechanics Division is pleased to announce and congratulate Professor Andrea Prosperetti, Charles A. Miller, Jr. Distinguished Professor of Mechanical Engineering, Johns Hopkins University, as the recipient of the 2016 Ted Belytschko Applied Mechanics Award.
The Executive Committee of the ASME Applied Mechanics Division is pleased to announce and congratulate Professor Pedro M. Reis, Gilbert W. Winslow Associate Professor, Massachussetts Institute of Technology, as the recipient of the 2016 Thomas J. R.
A Constitutive Model of Nanocomposite Hydrogels with Nanoparticle Crosslinkers
Qiming Wang, Zheming Gao
Email: qimingw [at] usc.edu
Beyond Wrinkles: Multimodal Surface Instability for Multifunctional Patterning
Qiming Wang, Xuanhe Zhao
Email: qimingw [at] usc.edu, zhaox [at] mit.edu
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Those involved in the modelling of the failure of plain/reinforced concrete using damage and plasticity might be interested in our webpage
http://petergrassl.com/Research/DamagePlasticity/CDPMLSDYNA/index.html
which we have created to support our concrete damage plasticity model CDPM(2) in LS-DYNA. You can find there a number of example input files, reports and our implementation of the model in the form of a user subroutine.
A similar discussion on this forum raised many interesting point about- Stress or strain: which one is more fundamental?
http://imechanica.org/node/1001
On a similar note I would like to address this decade old fundamental question on how do we define yield point of a material?
In this study, the intrinsic viscoelastic mechanical behavior of a hierarchical bio-composite, structural bamboo material, was experimentally investigated and correlated with its microstructural constituents and molecular building blocks. The macroscopic viscoelastic responses of bulk bamboo at ambient temperature and dehydrated condition were evaluated through dynamic compression experiments with various loading frequencies, whereas the localized viscoelasticity of bamboo's microstructural phases, viz.
