forked from lijiext/lammps
210 lines
6.2 KiB
C++
210 lines
6.2 KiB
C++
/** ElasticTimeIntegrator : a class to implement various elasticity integrators for FE quantities */
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#ifndef ELASTIC_TIME_INTEGRATOR_H
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#define ELASTIC_TIME_INTEGRATOR_H
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// ATC_Transfer headers
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#include "TimeIntegrator.h"
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using namespace std;
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namespace ATC {
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// forward declarations
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class ElasticIntegrationMethod;
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/**
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* @class ElasticTimeIntegrator
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* @brief Base class fo various time integrators for elasticity FE quantities
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*/
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//--------------------------------------------------------
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//--------------------------------------------------------
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// Class ElasticTimeIntegrator
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// Base class for elastic integrators which handles
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// parsing and stores basic data structures
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//--------------------------------------------------------
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//--------------------------------------------------------
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class ElasticTimeIntegrator : public TimeIntegrator {
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public:
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// constructor
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ElasticTimeIntegrator(ATC_Transfer * atcTransfer,
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TimeIntegrationType timeIntegrationType);
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// destructor
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virtual ~ElasticTimeIntegrator(){};
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/** parser/modifier */
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virtual bool modify(int narg, char **arg);
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/** pre time integration */
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virtual void initialize();
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private:
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// DO NOT define this
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ElasticTimeIntegrator();
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};
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/**
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* @class ElasticIntegrationMethod
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* @brief Base class fo various time integration methods for elasticity FE quantities
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*/
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//--------------------------------------------------------
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//--------------------------------------------------------
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// Class ElasticIntegrationMethod
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// Base class for elastic integration methods which
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// update the FE quantities in time
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//--------------------------------------------------------
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//--------------------------------------------------------
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class ElasticIntegrationMethod : public TimeIntegrationMethod {
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public:
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// constructor
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ElasticIntegrationMethod(ElasticTimeIntegrator * elasticTimeIntegrator);
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// destructor
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virtual ~ElasticIntegrationMethod(){};
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protected:
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/** time filtering application object */
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TimeFilter * timeFilter_;
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/** finite element displacement field */
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DENS_MAT & displacement_;
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/** finite element velocity field */
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DENS_MAT & velocity_;
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/** finite element acceleration field */
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DENS_MAT & acceleration_;
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/** atomic nodal displacement field */
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DENS_MAT & nodalAtomicDisplacement_;
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/** atomic nodal velocity field */
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DENS_MAT & nodalAtomicVelocity_;
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/** right-hand side of velocity equation */
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DENS_MAT & velocityRhs_;
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/** force at nodes from atomic quantities */
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DENS_MAT & nodalAtomicForce_;
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/** filtered power for computation during equilibration */
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DENS_MAT & forceFilteringData_;
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private:
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// DO NOT define this
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ElasticIntegrationMethod();
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};
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/**
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* @class ElasticTimeIntegratorVerlet
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* @brief Verlet integration for FE elastic quantities
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*/
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//--------------------------------------------------------
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//--------------------------------------------------------
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// Class ElasticTimeIntegratorVerlet
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// Uses the second order Verlet integration to update
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// the finite element velocity and displacement
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// fields, i.e. the same integration used for the
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// atomic velocities and positions.
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//--------------------------------------------------------
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//--------------------------------------------------------
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class ElasticTimeIntegratorVerlet : public ElasticIntegrationMethod {
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public:
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// constructor
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ElasticTimeIntegratorVerlet(ElasticTimeIntegrator * elasticTimeIntegrator);
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// destructor
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virtual ~ElasticTimeIntegratorVerlet(){};
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// time step methods, corresponding to ATC_Transfer
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/** first part of mid_initial_integrate */
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virtual void mid_initial_integrate1(double dt);
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/** first part of post_initial_integrate */
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virtual void post_initial_integrate1(double dt);
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/** first part of pre_final_integrate */
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virtual void pre_final_integrate1(double dt);
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/** first part of post_final_integrate */
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virtual void post_final_integrate1(double dt);
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/** post processing step before output */
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virtual void post_process(double dt);
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private:
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// DO NOT define this
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ElasticTimeIntegratorVerlet();
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};
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/**
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* @class ElasticTimeIntegratorVerlet
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* @brief Verlet integration for FE elastic quantities with time filtering
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*/
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//--------------------------------------------------------
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//--------------------------------------------------------
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// Class ElasticTimeIntegratorVerletFiltered
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//--------------------------------------------------------
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//--------------------------------------------------------
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class ElasticTimeIntegratorVerletFiltered : public ElasticTimeIntegratorVerlet {
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public:
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// constructor
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ElasticTimeIntegratorVerletFiltered(ElasticTimeIntegrator * elasticTimeIntegrator);
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// destructor
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virtual ~ElasticTimeIntegratorVerletFiltered(){};
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// time step methods, corresponding to ATC_Transfer
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/** first part of mid_initial_integrate */
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virtual void mid_initial_integrate1(double dt);
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/** first part of post_initial_integrate */
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virtual void post_initial_integrate1(double dt);
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/** first part of pre_final_integrate */
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virtual void pre_final_integrate1(double dt);
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/** first part of post_final_integrate */
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virtual void post_final_integrate1(double dt);
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/** post processing step before output */
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virtual void post_process(double dt){};
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protected:
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/** atomic nodal acceleration field */
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DENS_MAT & nodalAtomicAcceleration_;
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private:
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// DO NOT define this
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ElasticTimeIntegratorVerletFiltered();
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};
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};
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#endif
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