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Finite-Element Simulations of Harmonic Structured Materials

Ibishi, Besim LU (2016) FME820 20161
Mechanics
Abstract
Bimodal harmonic structured (HS) materials, is a new class of multi-scale architected metallic materials having specified topological arrangement of coarse- and ultra-fine grains. HS are experimentally proven to combine both high strength and ductility associated with ultra-fine- and coarse-grained fractions respectively. In this work, finite-element models of HS structured specimens were constructed and their tensile tests were simulated to unravel micro-mechanical mechanisms of plastic deformation.

A constructed 2D-model was successful in capturing expected macroscopic behaviours. It also revealed mechanisms behind superior performance of HS materials compared to their counterparts with bimodal randomly distributed grains.
Popular Abstract
Bimodal harmonic structured (HS) materials, is a new class of multi-scale architected metallic materials having specified topological arrangement of coarse- and ultra-fine grains. HS are experimentally proven to combine both high strength and ductility associated with ultra-fine- and coarse-grained fractions respectively. In this work, finite-element models of HS structured specimens were constructed and their tensile tests were simulated to unravel micro-mechanical mechanisms of plastic deformation.

A constructed 2D-model was successful in capturing expected macroscopic behaviours. It also revealed mechanisms behind superior performance of HS materials compared to their counterparts with bimodal randomly distributed grains.
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author
Ibishi, Besim LU
supervisor
organization
course
FME820 20161
year
type
H2 - Master's Degree (Two Years)
subject
keywords
Bimodal harmonic structure
report number
LUTFD2/TFME-16/5032-SE(1-40)
other publication id
LUTFD2/TFME-16/5032-SE(1-40)
language
English
id
8893914
date added to LUP
2016-10-24 11:50:14
date last changed
2016-10-24 11:50:14
@misc{8893914,
  abstract     = {Bimodal harmonic structured (HS) materials, is a new class of multi-scale architected metallic materials having specified topological arrangement of coarse- and ultra-fine grains. HS are experimentally proven to combine both high strength and ductility associated with ultra-fine- and coarse-grained fractions respectively. In this work, finite-element models of HS structured specimens were constructed and their tensile tests were simulated to unravel micro-mechanical mechanisms of plastic deformation.
 
 A constructed 2D-model was successful in capturing expected macroscopic behaviours. It also revealed mechanisms behind superior performance of HS materials compared to their counterparts with bimodal randomly distributed grains.},
  author       = {Ibishi, Besim},
  keyword      = {Bimodal harmonic structure},
  language     = {eng},
  note         = {Student Paper},
  title        = {Finite-Element Simulations of Harmonic Structured Materials},
  year         = {2016},
}