In this paper we describe the dynamic behavior of elongated multi-structured media excited by flexural harmonic waves. We examine periodic structures consisting of continuous beams and discrete resonators disposed in various arrangements. The transfer matrix approach and Bloch-Floquet conditions are implemented for the determination of diff erent propagation and non-propagation regimes.
What is the difference between pure shea and uniaxial tension? How can we predict it experimentally?
Hi,
I has written a subroutine for the 'probabilistic damage model for the dynamic fragmentation in brittle materials,hild,advances in applied mechanics,2010'..The procedure I followed in UMAT subroutine is as follows:
I hope some of you - particularly those working on strain gradient plasticity or damage and fracture modeling - find this work interesting.
On fracture in finite strain gradient plasticity
http://www.sciencedirect.com/science/article/pii/S074964191500162X
(A pre-print version is available at www.empaneda.com)
With respect to material design, in particular, smart material design with specific functionalities, we may be able to learn something from our peers in electrical engineering. In integrated circuits (IC), we have up to one billion basic units such as capacitors, inductors, and resistors. However, we know exactly where they are and what they do. How does this happen?
We present a monolithic mechanical metamaterial comprising a periodic arrangement of snapping units with tunable tensile behavior. Under tension, the metamaterial undergoes a large extension caused by sequential snap-through instabilities, and exhibits a pattern switch from an undeformed wavy-shape to a diamond configuration.
Dear All,
I got confused on the hyperelastic experiment that the uniaxial, equibiaxial, and planar test are based on the material is incompressible. What if the material is compressible, are the experiment the same as incompressible material? Except for the volumetric mode, what is the different between incompressible and compressible material experiment? Thanks!
Regards,
Bob
J.-H. Prevost and N. Sukumar
Image-based modelling can be used to analyse mass transfer phenomena through porous media, with particular applications to reservoir rock pore-throats networks. The aim of these analyses is to improve our understanding and characterisation of the way fluids move through variable pore-scales.
Using real geometries from micro-CT, this project involved generating a 3D model in Simpleware software for visualisation and processing prior to meshing and export to COMSOL Multiphysics® for studying chemical transport mechanisms.
