Difference between revisions of "NairnMPM"
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'''NairnMPM''' is the open-source code engine in this package for doing material point method (MPM) simulations. It is object-oriented <tt>C++</tt> code that can run on many platforms. The main calculations are parallel code. You run calculations by creating [[MPM Input Files|Input Files for MPM Calculations]]. Once the calculations are done, you have a variety of options for [[Main Page#Visualization|visualizing and analyzing]] the output. | |||
'''NairnMPM''' does 2D, axisymmetric, and 3D simulations with a wide range of [[Material Models|material types]]. Some of its features are (click each link for details): | |||
* [[MPM Methods and Simulation Timing|Several options for particle update methods]] | |||
* [[MPM Methods and Simulation Timing|Several types of shape function including spline-based shaped functions]] | |||
* A extended PIC methods known as [[XPIC Features|XPIC]] | |||
* [[Material Models|Many material models]] including elastic, plastic, isotropic, anisotropic, viscoelastic, small strain, and large strain. | |||
* Plasticity materials can use a variety of [[Hardening Laws|hardening laws]]. | |||
* [[Material Models#Softening Materials|Softening materials]] to implement anisotropic damage mechanics (IsoPlasticity only). | |||
* Simulations can include [[Defining Cracks|explicit cracks]], do fracture mechanics calculations, and model [[Crack Propagation Commands|crack propagation]]. | |||
* Crack can include [[Traction Laws|tractions laws]] to model cohesive zones, including dynamic cohesive zones in the wake of [[Crack Propagation Commands|crack propagation]]. | |||
* Cracks can add [[Contact Laws|contact laws]] to model either [[Friction|frictional contact]] or an [[Imperfect Interfaces|imperfect interface]]. | |||
* Advanced [[Multimaterial MPM|multimaterial mode MPM]] with latest [[Surface Normals|contact methods]] and [[Contact Laws|contact laws]] to model material-material interactions as either [[Friction|frictional contact]] or an [[Imperfect Interfaces|imperfect interface]]. | |||
* Both 2D and 3D objects images can be [[BMPRegion Command|directly converted to an MPM model]]. | |||
* Advanced [[Thermal Calculations|thermal calculations]] including [[Thermal Calculations#Conduction|thermal conductivity]] and accurate heat tracking to find [[Thermal Calculations#Tracking Thermodynamic Quantities|internal energy, entropy, and Helmholz free energy]]. | |||
* [[Diffusion Calculations|Coupled solvent diffusion calculations]]. | |||
* Many [[MPM Archiving Options|archiving options]] along with [[MPM Global Archiving Options|global archiving]] and archiving to [[VTKArchive Custom Task|VTK Legacy files]]. | |||
* [[Rigid Material|Rigid particles]] for moving boundary conditions and special rigid-contact interactions. | |||
* Many options for boundary conditions [[Grid-Based Boundary Conditions|on the grid]] or [[Particle-Based Boundary Conditions|on the particles]] (including tractions, heat fluxes, and concentration fluxes) and special grid conditions to create accurate [[MPM Grid Generation#Symmetry Planes|symmetry planes]]. | |||
* Several [[Damping Options|damping options]] | |||
* Simulations in a [[Gravitational Field|gravitational field]] | |||
* A method to deform shapes when adding particles to the grid and to deform the particles in those shapes. One common use is to have rigid particles conform to a shape that is not aligned with grid axes such as a cutting tool with various cutting angles. | |||
Some planned features being investigated are: | |||
* [[MPM Input Files#Custom Tasks|Custom Tasks]] for additional features | |||
Latest revision as of 12:56, 22 August 2019
NairnMPM is the open-source code engine in this package for doing material point method (MPM) simulations. It is object-oriented C++ code that can run on many platforms. The main calculations are parallel code. You run calculations by creating Input Files for MPM Calculations. Once the calculations are done, you have a variety of options for visualizing and analyzing the output.
NairnMPM does 2D, axisymmetric, and 3D simulations with a wide range of material types. Some of its features are (click each link for details):
- Several options for particle update methods
- Several types of shape function including spline-based shaped functions
- A extended PIC methods known as XPIC
- Many material models including elastic, plastic, isotropic, anisotropic, viscoelastic, small strain, and large strain.
- Plasticity materials can use a variety of hardening laws.
- Softening materials to implement anisotropic damage mechanics (IsoPlasticity only).
- Simulations can include explicit cracks, do fracture mechanics calculations, and model crack propagation.
- Crack can include tractions laws to model cohesive zones, including dynamic cohesive zones in the wake of crack propagation.
- Cracks can add contact laws to model either frictional contact or an imperfect interface.
- Advanced multimaterial mode MPM with latest contact methods and contact laws to model material-material interactions as either frictional contact or an imperfect interface.
- Both 2D and 3D objects images can be directly converted to an MPM model.
- Advanced thermal calculations including thermal conductivity and accurate heat tracking to find internal energy, entropy, and Helmholz free energy.
- Coupled solvent diffusion calculations.
- Many archiving options along with global archiving and archiving to VTK Legacy files.
- Rigid particles for moving boundary conditions and special rigid-contact interactions.
- Many options for boundary conditions on the grid or on the particles (including tractions, heat fluxes, and concentration fluxes) and special grid conditions to create accurate symmetry planes.
- Several damping options
- Simulations in a gravitational field
- A method to deform shapes when adding particles to the grid and to deform the particles in those shapes. One common use is to have rigid particles conform to a shape that is not aligned with grid axes such as a cutting tool with various cutting angles.
Some planned features being investigated are:
- Custom Tasks for additional features