thirdorderstepsol.h

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/* $Header: /var/cvs/mbdyn/mbdyn/mbdyn-1.0/mbdyn/base/thirdorderstepsol.h,v 1.25 2017/01/12 14:46:11 masarati Exp $ */
/* 
 * MBDyn (C) is a multibody analysis code. 
 * http://www.mbdyn.org
 *
 * Copyright (C) 1996-2017
 *
 * Pierangelo Masarati  <masarati@aero.polimi.it>
 * Paolo Mantegazza     <mantegazza@aero.polimi.it>
 *
 * Dipartimento di Ingegneria Aerospaziale - Politecnico di Milano
 * via La Masa, 34 - 20156 Milano, Italy
 * http://www.aero.polimi.it
 *
 * Changing this copyright notice is forbidden.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation (version 2 of the License).
 * 
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifndef THIRD_ORDER_STEPSOL_H

#define THIRD_ORDER_STEPSOL_H

#include <solver.h>
#include <stepsol.h>
#include <spmapmh.h>

class ThirdOrderIntegrator :  
        public ImplicitStepIntegrator
{
protected:
        VectorHandler *pXPrev;
        VectorHandler *pXPrimePrev; 

        doublereal dT;
        doublereal rho;
        doublereal theta;
        doublereal w0, w1, w2;
        doublereal jx11, jx12, jx21, jx22;
        doublereal m0, m1, n0, n1;
        
        bool bAdvanceCalledFirstTime;
        mutable MyVectorHandler Restmp;
        std::vector<bool> EqIsAlgebraic, EqIsDifferential;
        SpMapMatrixHandler Jacxi_xp, Jacxi_x, Jac_xp, Jac_x;
        MatrixHandler *pJacxi_xp, *pJacxi_x, *pJac_xp, *pJac_x;

        void PredictDof_for_AfterPredict(const int DCount,
                const DofOrder::Order Order,
                const VectorHandler* const pSol = 0) const;
        void RealPredictDof(const int DCount,
                const DofOrder::Order Order,
                const VectorHandler* const pSol = 0) const;
        void UpdateDof(const int DCount,
                const DofOrder::Order Order,
                const VectorHandler* const pSol = 0) const;
public:
        ThirdOrderIntegrator(const doublereal dT, 
                        const doublereal dSolutionTol, 
                        const integer iMaxIt,
                        const bool bmod_res_test);

        virtual ~ThirdOrderIntegrator(void);

        virtual void Residual(VectorHandler* pRes) const;

        virtual void Jacobian(MatrixHandler* pJac) const;
        
        virtual void Update(const VectorHandler* pSol) const;

        /* scale factor for tests */
//      virtual doublereal TestScale(const NonlinearSolverTest *pTest) const;

        virtual doublereal
        Advance(Solver* pS, 
                        const doublereal TStep, 
                        const doublereal dAlph, 
                        const StepChange StType,
                        std::deque<MyVectorHandler*>& qX,
                        std::deque<MyVectorHandler*>& qXPrime,
                        MyVectorHandler*const pX,
                        MyVectorHandler*const pXPrime,
                        integer& EffIter,
                        doublereal& Err,
                        doublereal& SolErr);

protected:
        virtual void SetCoef(doublereal dT, 
                        doublereal dAlpha,
                        enum StepChange NewStep) = 0;
        virtual void Predict(void);

};

class TunableThirdOrderIntegrator :  
        public ThirdOrderIntegrator
{
private:
        DriveOwner Rho;

public:
        TunableThirdOrderIntegrator(const doublereal dT, 
                        const doublereal dSolutionTol, 
                        const integer iMaxIt,
                        const DriveCaller* pRho,
                        const bool bmod_res_test);

        virtual ~TunableThirdOrderIntegrator(void);
        void SetDriveHandler(const DriveHandler* pDH);

protected:
        void SetCoef(doublereal dT, 
                        doublereal dAlpha,
                        enum StepChange NewStep);
};

class AdHocThirdOrderIntegrator :  
        public ThirdOrderIntegrator
{
public:
        AdHocThirdOrderIntegrator(const doublereal dT, 
                        const doublereal dSolutionTol, 
                        const integer iMaxIt,
                        const bool bmod_res_test);

        virtual ~AdHocThirdOrderIntegrator(void);

protected:
        void SetCoef(doublereal dT, 
                        doublereal dAlpha,
                        enum StepChange NewStep);
};

#endif /* THIRD_ORDER_STEPSOL_H */