adaptive_time_incrementor.h

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// KRATOS___
//     //   ) )
//    //         ___      ___
//   //  ____  //___) ) //   ) )
//  //    / / //       //   / /
// ((____/ / ((____   ((___/ /  MECHANICS
//
//  License:         geo_mechanics_application/license.txt
//
//  Main authors:    Wijtze Pieter Kikstra
//                   Anne van de Graaf
//
 
#pragma once
 
#include "time_incrementor.h"
 
namespace Kratos
{
 
class AdaptiveTimeIncrementor : public TimeIncrementor
{
public:
    AdaptiveTimeIncrementor(double      StartTime,
                            double      EndTime,
                            double      StartIncrement,
                            std::size_t MaxNumOfCycles     = 10,
                            double      ReductionFactor    = 0.5,
                            double      IncreaseFactor     = 2.0,
                            double      MaxTimeStepFactor  = 1000.0,
                            std::size_t MinNumOfIterations = 3,
                            std::size_t MaxNumOfIterations = 15);
 
    [[nodiscard]] bool WantNextStep(const TimeStepEndState& rPreviousState) const override;
    [[nodiscard]] bool WantRetryStep(std::size_t CycleNumber, const TimeStepEndState& rPreviousState) const override;
    [[nodiscard]] double GetIncrement() const override;
    void                 PostTimeStepExecution(const TimeStepEndState& rResultantState) override;
 
private:
    double      mEndTime;
    double      mDeltaTime;
    std::size_t mMaxNumOfCycles;
    double      mReductionFactor;
    double      mIncreaseFactor;
    double      mMaxDeltaTime;
    std::size_t mMinNumOfIterations;
    std::size_t mMaxNumOfIterations;
};
 
} // namespace Kratos