lammps-graphene/notes/project_status

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2020-12-23 22:12:07 +00:00
Molecular dynamics of bicrystalline and hydrogenated graphene to determine mechanical properties under tensile load and indentation
Sub-Projects
============
(1) Find mechanical properties of bicrystalline graphene as function of grain orientation and type
(2) Find mechanical properties of bicrystalline graphene as a function of grain defects
(3) Compare similar properties of hydrogenated graphene.
Mechanical properties of interest:
- Local Stress Map
- Tensile Strength
- Elastic Modulus
- Crack Propagation
Kien runs analog DFT and provides samples
Todo
====
Complete literature review based on needs of sub-projects 1 & 2.
Receive samples from Kien.
Complete Task List
If there's time, create task list for hydrogenated graphene.
Task List
=========
* Create script to determine local stress map for each simulation step.
* Create script to determine tensile strength and elastic modulus.
* Create script to graph stress-strain curve.
(Sub-project 1)
* Prepare uniaxial tensile load simulation.
* Run uniaxial tensie load simulation on one sample.
* Propagate local stress map, stress-strain, tensile strength, elastic modulus from results.
* Determine whether everything is working properly.
* Prepare uniaxial tensile load simulation for all samples.
* Determine stress maps for each sample.
* Determine stress-strain curve for each sample, including tensile strength and elastic modulus.
* Organize data and graphs.
(Sub-project 2)
* Prepare biaxial tensile load simulation
* Run biaxial tensile load simulation on one sample.
* Propagate local stress map, stress-strain, tensile strength, elastic modulus from results.
* Determine whether everything is working properly.
* Prepare biaxial tensile load simulation for all samples.
* Determine stress maps for each sample.
* Determine stress-strain curve for each sample, including tensile strength and elastic modulus.
* Organize data and graphs.
(Sub-project 1 & 2B)
* Prepare indentation simulation
* Run indentation simulation on one sample.
* Propagate local stress map, stress-strain, tensile strength, elastic modulus from results.
* Determine whether everything is working properly.
* Prepare biaxial tensile load simulation for all samples.
* Determine stress maps for each sample.
* Determine stress-strain curve for each sample, including tensile strength and elastic modulus.
* Organize data and graphs.
Done
====
On the Burner
=============
** Grain characterisation program
Requested Features
-----------------------------------------------
- Index grain boundary atoms
- Index central atoms
- Determine grain orientation and size
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