Line data    Source code

       1             : //* This file is part of the MOOSE framework
       2             : //* https://mooseframework.inl.gov
       3             : //*
       4             : //* All rights reserved, see COPYRIGHT for full restrictions
       5             : //* https://github.com/idaholab/moose/blob/master/COPYRIGHT
       6             : //*
       7             : //* Licensed under LGPL 2.1, please see LICENSE for details
       8             : //* https://www.gnu.org/licenses/lgpl-2.1.html
       9             : 
      10             : #pragma once
      11             : 
      12             : #include "PenaltyWeightedGapUserObject.h"
      13             : #include "WeightedVelocitiesUserObject.h"
      14             : #include "AugmentedLagrangeInterface.h"
      15             : #include "TwoVector.h"
      16             : 
      17             : /**
      18             :  * User object that computes tangential pressures due to friction using a penalty approach,
      19             :  * following J.C. Simo, T.A. Laursen, An augmented lagrangian treatment of contact problems
      20             :  * involving friction, https://doi.org/10.1016/0045-7949(92)90540-G.
      21             :  */
      22             : class PenaltyFrictionUserObject : virtual public PenaltyWeightedGapUserObject,
      23             :                                   virtual public WeightedVelocitiesUserObject
      24             : {
      25             : public:
      26             :   static InputParameters validParams();
      27             : 
      28             :   PenaltyFrictionUserObject(const InputParameters & parameters);
      29             : 
      30             :   virtual const ADVariableValue & contactTangentialPressureDirOne() const override;
      31             :   virtual const ADVariableValue & contactTangentialPressureDirTwo() const override;
      32             : 
      33             :   virtual void initialize() override;
      34             :   virtual void finalize() override;
      35             :   virtual void reinit() override;
      36             :   virtual void timestepSetup() override;
      37             : 
      38             :   virtual Real getFrictionalContactPressure(const Node * const node,
      39             :                                             const unsigned int component) const override;
      40             :   virtual Real getAccumulatedSlip(const Node * const node,
      41             :                                   const unsigned int component) const override;
      42             :   virtual Real getTangentialVelocity(const Node * const node,
      43             :                                      const unsigned int component) const override;
      44             :   virtual Real getDeltaTangentialLagrangeMultiplier(const Node * const node,
      45             :                                                     const unsigned int component) const override;
      46             : 
      47             :   virtual bool isAugmentedLagrangianConverged() override;
      48             :   virtual void updateAugmentedLagrangianMultipliers() override;
      49             : 
      50             : protected:
      51             :   virtual const VariableTestValue & test() const override;
      52       18644 :   virtual bool constrainedByOwner() const override { return false; }
      53             : 
      54             :   /// The normal penalty factor
      55             :   const Real _penalty;
      56             : 
      57             :   /// The penalty factor for the frictional constraints
      58             :   const Real _penalty_friction;
      59             : 
      60             :   /// Acceptable slip distance for augmented Lagrange convergence
      61             :   const Real _slip_tolerance;
      62             : 
      63             :   /// The friction coefficient
      64             :   const Real _friction_coefficient;
      65             : 
      66             :   /// Map from degree of freedom to current and old step slip
      67             :   std::unordered_map<const DofObject *, std::pair<TwoVector, TwoVector>> _dof_to_step_slip;
      68             : 
      69             :   /// Map from degree of freedom to current and old accumulated slip
      70             :   std::unordered_map<const DofObject *, std::pair<TwoVector, TwoVector>> _dof_to_accumulated_slip;
      71             : 
      72             :   /// Map from degree of freedom to current and old tangential traction
      73             :   std::unordered_map<const DofObject *, std::pair<ADTwoVector, TwoVector>>
      74             :       _dof_to_tangential_traction;
      75             : 
      76             :   /// The first frictional contact pressure on the mortar segment quadrature points
      77             :   ADVariableValue _frictional_contact_traction_one;
      78             : 
      79             :   /// The second frictional contact pressure on the mortar segment quadrature points
      80             :   ADVariableValue _frictional_contact_traction_two;
      81             : 
      82             :   /// Map from degree of freedom to augmented lagrange multiplier
      83             :   std::unordered_map<const DofObject *, TwoVector> _dof_to_frictional_lagrange_multipliers;
      84             : 
      85             :   /// Map from degree of freedom to local friction penalty value
      86             :   std::unordered_map<const DofObject *, Real> _dof_to_local_penalty_friction;
      87             : 
      88             :   /// Penalty growth factor for augmented Lagrange
      89             :   const Real _penalty_multiplier_friction;
      90             : 
      91             :   /// The adaptivity method for the penalty factor at augmentations
      92             :   const enum class AdaptivityFrictionalPenalty { SIMPLE, FRICTION_LIMIT } _adaptivity_friction;
      93             : 
      94             :   /// Tolerance to avoid NaN/Inf in automatic differentiation operations.
      95             :   const Real _epsilon_tolerance;
      96             : };